[TWEAKS][SCRIPTS] Collection build.prop and init.d tweaks. Now with tweaks combo

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XtremeSilencer

Senior Member
Sep 5, 2012
1,247
2,149
Original Thread: http://forum.xda-developers.com/showthread.php?t=1709836

I've been collecting some tweaks and scripts and seems to me it's now time to share it. While some values in terms of optimization might be different from device to device, I've found these pretty consistent throughout many.

I didn't tested all of them, and i don't assume any risk!!! Use them at you own risk!!!

Some useful tips on how to use them at the end of the post

This thread will be updated when new/better things come out

Superuser, Busybox install/update

1. Easily install Busybox (YOU NEED ROOT FIRST)
Code:
https://play.google.com/store/apps/...DEsImNvbS5qcnVtbXkuYnVzeWJveC5pbnN0YWxsZXIiXQ..
2. UPDATE SuperUser (root app)
Code:
http://goo.im/superuser/


Build.prop
(edit your /system/build.prop with a file manager with root access)

Careful for already existing settings. In this case, just change the values.

1. Force launcher into memory
Code:
ro.HOME_APP_ADJ=1
2. Raise JPG quality to 100%
Code:
ro.media.enc.jpeg.quality=100
3. VM Heapsize; higher the RAM, higher the hp can be
Code:
dalvik.vm.heapsize=96m
4. Render UI with GPU
Code:
debug.sf.hw=1
5. Decrease dialing out delay
Code:
ro.telephony.call_ring.delay=0
6. Helps scrolling responsiveness
Code:
windowsmgr.max_events_per_sec=150
7. Save battery
Code:
wifi.supplicant_scan_interval=180
pm.sleep_mode=1
ro.ril.disable.power.collapse=0
8. Disable debugging notify icon on statusbar
Code:
persist.adb.notify=0
9. Increase overall touch responsiveness
Code:
debug.performance.tuning=1
video.accelerate.hw=1
10. Raise photo and video recording quality
Code:
ro.media.dec.jpeg.memcap=12000000
ro.media.enc.hprof.vid.bps=12000000
11. Signal (3G) tweaks
Code:
ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5
12. Net speed tweaks
Code:
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
13. Disable blackscreen issue after a call
Code:
ro.lge.proximity.delay=25
mot.proximity.delay=25
14. Fix some application issues
Code:
ro.kernel.android.checkjni=0
15. Phone will not wake up from hitting the volume rocker
Code:
ro.config.hwfeature_wakeupkey=0
16. Force button lights on when screen is on
Code:
ro.mot.buttonlight.timeout=0
17. Disable boot animation for faster boot
Code:
debug.sf.nobootanimation=1
18. Miscellaneous flags
Code:
ro.config.hw_menu_unlockscreen=false
persist.sys.use_dithering=0
persist.sys.purgeable_assets=1
dalvik.vm.dexopt-flags=m=y
ro.mot.eri.losalert.delay=1000
19. Specifics to some LG devices
Code:
persist.service.pcsync.enable=0
persist.service.lgospd.enable=0
user.feature.flex=true
user.feature.lgdrm=false
user.feature.lgresource=false
user.feature.lgpoweroff=false
user.feature.ls_event=false
user.feature.ls_normal=false
user.feature.sui=false

Init.d
(needs ROM with init.d access and busybox, open empty file, insert header #!/system/bin/sh and put these there, save in /system/etc/init.d and name it something like 77tweaks)

1. strict minfree handler tweak
Code:
echo "2048,3072,6144,15360,17920,20480" > /sys/module/lowmemorykiller/parameters/minfree
2. internet speed tweaks
Code:
echo "0" > /proc/sys/net/ipv4/tcp_timestamps;
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse;
echo "1" > /proc/sys/net/ipv4/tcp_sack;
echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle;
echo "1" > /proc/sys/net/ipv4/tcp_window_scaling;
echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes;
echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl;
echo "30" > /proc/sys/net/ipv4/tcp_fin_timeout;
echo "404480" > /proc/sys/net/core/wmem_max;
echo "404480" > /proc/sys/net/core/rmem_max;
echo "256960" > /proc/sys/net/core/rmem_default;
echo "256960" > /proc/sys/net/core/wmem_default;
echo "4096,16384,404480" > /proc/sys/net/ipv4/tcp_wmem;
echo "4096,87380,404480" > /proc/sys/net/ipv4/tcp_rmem;
3. vm management tweaks
Code:
echo "4096" > /proc/sys/vm/min_free_kbytes
echo "0" > /proc/sys/vm/oom_kill_allocating_task;
echo "0" > /proc/sys/vm/panic_on_oom;
echo "0" > /proc/sys/vm/laptop_mode;
echo "0" > /proc/sys/vm/swappiness
echo "50" > /proc/sys/vm/vfs_cache_pressure
echo "90" > /proc/sys/vm/dirty_ratio
echo "70" > /proc/sys/vm/dirty_background_ratio
4. misc kernel tweaks
Code:
echo "8" > /proc/sys/vm/page-cluster;
echo "64000" > /proc/sys/kernel/msgmni;
echo "64000" > /proc/sys/kernel/msgmax;
echo "10" > /proc/sys/fs/lease-break-time;
echo "500,512000,64,2048" > /proc/sys/kernel/sem;
5. battery tweaks
Code:
echo "500" > /proc/sys/vm/dirty_expire_centisecs
echo "1000" > /proc/sys/vm/dirty_writeback_centisecs
6. EXT4 tweaks (greatly increase I/O)
(needs /system, /cache, /data partitions formatted to EXT4)

a) removes journalism
Code:
tune2fs -o journal_data_writeback /block/path/to/system
tune2fs -O ^has_journal /block/path/to/system
tune2fs -o journal_data_writeback /block/path/to/cache
tune2fs -O ^has_journal /block/path/to/cache
tune2fs -o journal_data_writeback /block/path/to/data
tune2fs -O ^has_journal /block/path/to/data
b) perfect mount options
Code:
busybox mount -o remount,noatime,noauto_da_alloc,nodiratime,barrier=0,nobh /system
busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /data
busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /cache
7. Flags blocks as non-rotational and increases cache size
Code:
LOOP=`ls -d /sys/block/loop*`;
RAM=`ls -d /sys/block/ram*`;
MMC=`ls -d /sys/block/mmc*`;
for j in $LOOP $RAM
do
echo "0" > $j/queue/rotational;
echo "2048" > $j/queue/read_ahead_kb;
done
8. microSD card speed tweak
Code:
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb;
9. Defrags database files
Code:
for i in \
`find /data -iname "*.db"`
do \
sqlite3 $i 'VACUUM;';
done
9. Remove logger
Code:
rm /dev/log/main
10. Ondemand governor tweaks
Code:
SAMPLING_RATE=$(busybox expr `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency` \* 750 / 1000)
echo 95 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
echo $SAMPLING_RATE > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
11. Auto change governor and I/O Scheduler

a) I/O Scheduler (Best: MTD devices - VR; EMMC devices - SIO) - needs kernel with these
Code:
echo "vr" > /sys/block/mmcblk0/queue/scheduler
or
echo "sio" > /sys/block/mmcblk0/queue/scheduler
b) Governor (Best: Minmax > SavagedZen > Smoothass > Smartass > Interactive) - needs kernel with these
Code:
echo "governor-name-here" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
12. Auto-zipalign on boot
(needs zipalign bin)
Code:
http://forum.xda-developers.com/showthread.php?t=860586
13. Loopy Smoothness tweak
Code:
http://forum.xda-developers.com/show....php?t=1137554
http://forum.xda-developers.com/show....php?t=1205744
14. Move dalvik-cache to cache partition (if it's big enough) to free up data partition space
Code:
CACHESIZE=$(df -k /cache | tail -n1 | tr -s ' ' | cut -d ' ' -f2)
if [ $CACHESIZE -gt 80000 ]
then
echo "Large cache detected, moving dalvik-cache to /cache"
if [ ! -d /cache/dalvik-cache ]
then
busybox rm -rf /cache/dalvik-cache /data/dalvik-cache
mkdir /cache/dalvik-cache /data/dalvik-cache
fi

busybox chown 1000:1000 /cache/dalvik-cache
busybox chmod 0771 /cache/dalvik-cache

# bind mount dalvik-cache so we can still boot without the sdcard
busybox mount -o bind /cache/dalvik-cache /data/dalvik-cache
busybox chown 1000:1000 /data/dalvik-cache
busybox chmod 0771 /data/dalvik-cache
else
echo "Small cache detected, dalvik-cache will remain on /data"
fi
15. Disable normalize sleeper
Code:
mount -t debugfs none /sys/kernel/debug
echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features
16. OOM groupings and priorities tweaks - SuperCharger
Code:
http://forum.xda-developers.com/showthread.php?t=991276

GPS.conf
(create or edit your /system/etc/gps.conf with a file manager with root access)

For improving GPS lock time and signal.

a) European NTP server (replace for america or asia in your case)
Code:
NTP_SERVER=europe.pool.ntp.org
XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin
XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
b) SE supl for A-GPS (better than Nokia's or Google's)
Code:
SUPL_HOST=supl.sonyericsson.com
SUPL_PORT=7275

Other tweaks or guidelines

1. Patch your hosts file for blocking Ads
(please think before doing this; many developers are supported through this way)
Code:
You can use AdFree application for this or changing manually your hosts file.

Here are some databases:
http://www.mvps.org/winhelp2002/hosts.txt
http://pgl.yoyo.org/adservers/serverlist.php?showintro=0;hostformat=hosts
2. Use CyanogenMOD's APN list file - it's one of the most complete.
Code:
It's located in /system/etc/apns-conf.xml
3. Use UOT kitchen for basic theming on your device.
Code:
http://uot.dakra.lt/
4. Use Google's dns servers
Code:
Create an empty file, name it resolv.conf and put there these 2 lines:
nameserver 8.8.8.8
nameserver 8.8.4.4

Save to /system/etc/.
5. Update Superuser and su binary to latest version (3.0 beta)
Code:
http://goo-inside.me/superuser/
6. Disable sync feature in sqlite
(author: ownhere - needs a source for your device so you can compile the /system/lib/libsqlite.so)
Code:
Patch file here: http://forum.xda-developers.com/showthread.php?t=903507
7. Do not use task killers.

sysctl_tweaks and sysctl.conf tweaks
added by krabappel2548 Thank him

To make them work:
1. make a new file in /system/etc/init.d, name it sysctl_tweaks
2. make a new file in /system/etc, name it sysctl.conf
3. Paste the right code in the right file

1. sysctl_tweaks
Code:
#!/system/bin/sh
# grep sysctl /etc/init.d/*
/etc/init.d/02vm:# Load /sys/etc/sysctl.conf
/etc/init.d/02vm:sysctl -p
2. sysctl.conf
Code:
#sysctl.conf file

############################
# Battery life tweaks #
############################
sysctl -w vm.dirty_writeback_centisecs=3000;
sysctl -w vm.dirty_expire_centisecs=500;

############################
# kernel tweaks #
############################

sysctl -w kernel.sched_features=15834233;
sysctl -w kernel.msgmni=1024;
sysctl -w kernel.msgmax=64000;
sysctl -w kernel.shmmax=268435456;
sysctl -w kernel.shmall=2097152;
sysctl -w kernel.sem="500 512000 100 2048";
sysctl -w kernel.hung_task_timeout_secs=0;
sysctl -w kernel.sched_latency_ns=18000000;
sysctl -w kernel.sched_compat_yield=1;
sysctl -w kernel.sched_shares_ratelimit=256000;
sysctl -w kernel.sched_child_runs_first=0;
sysctl -w kernel.threads-max=10000;
sysctl -w kernel.panic=30;
sysctl -w kernel.panic_on_oops=1;
sysctl -w kernel.sched_features=24189;
sysctl -w kernel.sched_min_granularity_ns=1500000;
sysctl -w kernel.sched_wakeup_granularity_ns=3000000;

############################
# CPU tweaks #
############################

# Queue size modifications
sysctl -w net.core.optmem_max=20480;
sysctl -w net.unix.max_dgram_qlen=50;

# Net Core Settings
# Location: /proc/sys/net/core
sysctl -w net.core.wmem_max=524288;
sysctl -w net.core.rmem_max=524288;
sysctl -w net.core.rmem_default=256960;
sysctl -w net.core.wmem_default=256960;

############################
# VM & Filesystem tweaks #
############################
sysctl -w fs.lease-break-time=10;
sysctl -w fs.file-max=65536;
sysctl -w vm.overcommit_memory=1;
sysctl -w vm.min_free_order_shift=4;
sysctl -w vm.block_dump=0;
sysctl -w vm.oom_dump_tasks=1;
sysctl -w vm.page-cluster=3;

############################
# Net Speed tweaks #
############################

# UnderUtilized Networking Tweaks below as recommended by avgjoemomma (from XDA)
sysctl -w net.ipv4.tcp_congestion_control=cubic;

# Hardening the TCP/IP stack to SYN attacks
sysctl -w net.ipv4.tcp_syncookies=1;
sysctl -w net.ipv4.conf.all.rp_filter=1;
sysctl -w net.ipv4.conf.default.rp_filter=1;
sysctl -w net.ipv4.tcp_synack_retries=2;
sysctl -w net.ipv4.tcp_syn_retries=2;
sysctl -w net.ipv4.tcp_max_syn_backlog=1024;
sysctl -w net.ipv4.tcp_max_tw_buckets=16384;
sysctl -w net.ipv4.icmp_echo_ignore_all=1;
sysctl -w net.ipv4.icmp_ignore_bogus_error_responses=1;
sysctl -w net.ipv4.tcp_no_metrics_save=1;
sysctl -w net.ipv4.tcp_fin_timeout=15;
sysctl -w net.ipv4.tcp_keepalive_time=1800;
sysctl -w net.ipv4.ip_forward=0;
sysctl -w net.ipv4.tcp_moderate_rcvbuf=1;
sysctl -w net.ipv4.route.flush=1;
sysctl -w net.ipv4.udp_rmem_min=6144;
sysctl -w net.ipv4.udp_wmem_min=6144;
sysctl -w net.ipv4.tcp_rfc1337=1;
sysctl -w net.ipv4.ip_no_pmtu_disc=0;
sysctl -w net.ipv4.tcp_ecn=0;
sysctl -w net.ipv4.tcp_sack=1;
sysctl -w net.ipv4.tcp_fack=1;

# Don't accept source routing
sysctl -w net.ipv4.conf.default.accept_source_route=0 ;
sysctl -w net.ipv4.conf.all.accept_source_route=0;

# Don't accept redirects
sysctl -w net.ipv4.conf.all.accept_redirects=0;
sysctl -w net.ipv4.conf.default.accept_redirects=0;
sysctl -w net.ipv4.conf.all.secure_redirects=0;
sysctl -w net.ipv4.conf.default.secure_redirects=0;
This is another init.d tweak It's a battery calibration script

3. This is my battery calibration tweak
Code:
#!/system/bin/sh
# ========================================
# init.d script for KA Xperia SSpeed
# made by krabappel2548
# ========================================

SLEEP=120

if [ -e /data/.battery-calibrated ] ; then
exit 0
fi

(
while : ; do
LEVEL=$(cat /sys/class/power_supply/battery/capacity)
CUR=$(cat /sys/class/power_supply/battery/batt_current)
if [ "$LEVEL" == "100" ] && [ "$CUR" == "0" ] ; then
log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR***: calibrating..."
rm -f /data/system/batterystats.bin
touch /data/.battery-calibrated
exit 0
fi
# log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR ***: sleeping for $SLEEP s..."
sleep $SLEEP
done
) &

#Disable normalize sleeper
mount -t debugfs none /sys/kernel/debug
echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features

#battery tweaks (sleepers)
mount -t debugfs none /sys/kernel/debug
echo NO_NEW_FAIR_SLEEPERS > /sys/kernel/debug/sched_features;
echo NO_NORMALIZED_SLEEPERS > /sys/kernel/debug/sched_features;
umount /sys/kernel/debug


Tips Combined twaks and apps
Still testing better values to add!

1. incredibile fast browsing in zoomed pages with no shutters!

♦ VM Heapsize; higher the RAM, higher the hp can be
Code:
dalvik.vm.heapsize=96m
♦ Helps scrolling responsiveness
Code:
windowsmgr.max_events_per_sec=250
♦ Opera Mobile Browser

2. Faster internet speed

♦ Signal (3G) tweaks
Code:
ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5
♦ Net speed tweaks
Code:
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
Alright, I think this is it for now.
If you have any other tweaks or better values, you can PM me and I'll include them

thanks to
kenzo
krabappel2548
 
Last edited by a moderator:

AndriyeZ

Senior Member
Jul 24, 2012
202
18
Surabaya
Is this work for Arc S with custom ROM,,,??? coz I saw the "htc" word on 3G tweak script

Sent from my LT18 using xda premium
 

deniel

Senior Member
Sep 27, 2010
288
47
it would be helpfull know which improove and which deprove specific Rom.
Im using JS 6.1 and for example i dont know if for example this random row:
- wifi.supplicant_scan_interval=180
could improove this rom or it has some better settings somehow
 

AndriyeZ

Senior Member
Jul 24, 2012
202
18
Surabaya
dude
its a command not really htc company lol....:D
hahaha..just wondering mate :eek:
I'Ve been used this tweaks
"ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5"

but without the two lines of "htcmaskw1.bitmask=...."
so what the different ??
:confused:
 

XtremeSilencer

Senior Member
Sep 5, 2012
1,247
2,149
hahaha..just wondering mate :eek:
I'Ve been used this tweaks
"ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5"

but without the two lines of "htcmaskw1.bitmask=...."
so what the different ??
:confused:

Actually htcmaskw1 command sets the perbit mask tranfer means that when u r on ur data conncetion in no wifi u get the max speed by the value
so the most optimized value has to be said there
 
  • Like
Reactions: AndriyeZ

chasemyass

Senior Member
Dec 21, 2011
1,775
549
Samsung Galaxy S21 Ultra
I've been collecting some tweaks and scripts and seems to me it's now time to share it. While some values in terms of optimization might be different from device to device, I've found these pretty consistent throughout many.

I didn't tested all of them, and i don't assume any risk!!! Use them at you own risk!!!

Some useful tips on how to use them at the end of the post

This thread will be updated when new/better things come out

Superuser, Busybox install/update

1. Easily install Busybox (YOU NEED ROOT FIRST)
Code:
https://play.google.com/store/apps/...DEsImNvbS5qcnVtbXkuYnVzeWJveC5pbnN0YWxsZXIiXQ..
2. UPDATE SuperUser (root app)
Code:
http://goo.im/superuser/


Build.prop
(edit your /system/build.prop with a file manager with root access)

Careful for already existing settings. In this case, just change the values.

1. Force launcher into memory
Code:
ro.HOME_APP_ADJ=1
2. Raise JPG quality to 100%
Code:
ro.media.enc.jpeg.quality=100
3. VM Heapsize; higher the RAM, higher the hp can be
Code:
dalvik.vm.heapsize=96m
4. Render UI with GPU
Code:
debug.sf.hw=1
5. Decrease dialing out delay
Code:
ro.telephony.call_ring.delay=0
6. Helps scrolling responsiveness
Code:
windowsmgr.max_events_per_sec=150
7. Save battery
Code:
wifi.supplicant_scan_interval=180
pm.sleep_mode=1
ro.ril.disable.power.collapse=0
8. Disable debugging notify icon on statusbar
Code:
persist.adb.notify=0
9. Increase overall touch responsiveness
Code:
debug.performance.tuning=1
video.accelerate.hw=1
10. Raise photo and video recording quality
Code:
ro.media.dec.jpeg.memcap=12000000
ro.media.enc.hprof.vid.bps=12000000
11. Signal (3G) tweaks
Code:
ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5
12. Net speed tweaks
Code:
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
13. Disable blackscreen issue after a call
Code:
ro.lge.proximity.delay=25
mot.proximity.delay=25
14. Fix some application issues
Code:
ro.kernel.android.checkjni=0
15. Phone will not wake up from hitting the volume rocker
Code:
ro.config.hwfeature_wakeupkey=0
16. Force button lights on when screen is on
Code:
ro.mot.buttonlight.timeout=0
17. Disable boot animation for faster boot
Code:
debug.sf.nobootanimation=1
18. Miscellaneous flags
Code:
ro.config.hw_menu_unlockscreen=false
persist.sys.use_dithering=0
persist.sys.purgeable_assets=1
dalvik.vm.dexopt-flags=m=y
ro.mot.eri.losalert.delay=1000
19. Specifics to some LG devices
Code:
persist.service.pcsync.enable=0
persist.service.lgospd.enable=0
user.feature.flex=true
user.feature.lgdrm=false
user.feature.lgresource=false
user.feature.lgpoweroff=false
user.feature.ls_event=false
user.feature.ls_normal=false
user.feature.sui=false

Init.d
(needs ROM with init.d access and busybox, open empty file, insert header #!/system/bin/sh and put these there, save in /system/etc/init.d and name it something like 77tweaks)

1. strict minfree handler tweak
Code:
echo "2048,3072,6144,15360,17920,20480" > /sys/module/lowmemorykiller/parameters/minfree
2. internet speed tweaks
Code:
echo "0" > /proc/sys/net/ipv4/tcp_timestamps;
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse;
echo "1" > /proc/sys/net/ipv4/tcp_sack;
echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle;
echo "1" > /proc/sys/net/ipv4/tcp_window_scaling;
echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes;
echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl;
echo "30" > /proc/sys/net/ipv4/tcp_fin_timeout;
echo "404480" > /proc/sys/net/core/wmem_max;
echo "404480" > /proc/sys/net/core/rmem_max;
echo "256960" > /proc/sys/net/core/rmem_default;
echo "256960" > /proc/sys/net/core/wmem_default;
echo "4096,16384,404480" > /proc/sys/net/ipv4/tcp_wmem;
echo "4096,87380,404480" > /proc/sys/net/ipv4/tcp_rmem;
3. vm management tweaks
Code:
echo "4096" > /proc/sys/vm/min_free_kbytes
echo "0" > /proc/sys/vm/oom_kill_allocating_task;
echo "0" > /proc/sys/vm/panic_on_oom;
echo "0" > /proc/sys/vm/laptop_mode;
echo "0" > /proc/sys/vm/swappiness
echo "50" > /proc/sys/vm/vfs_cache_pressure
echo "90" > /proc/sys/vm/dirty_ratio
echo "70" > /proc/sys/vm/dirty_background_ratio
4. misc kernel tweaks
Code:
echo "8" > /proc/sys/vm/page-cluster;
echo "64000" > /proc/sys/kernel/msgmni;
echo "64000" > /proc/sys/kernel/msgmax;
echo "10" > /proc/sys/fs/lease-break-time;
echo "500,512000,64,2048" > /proc/sys/kernel/sem;
5. battery tweaks
Code:
echo "500" > /proc/sys/vm/dirty_expire_centisecs
echo "1000" > /proc/sys/vm/dirty_writeback_centisecs
6. EXT4 tweaks (greatly increase I/O)
(needs /system, /cache, /data partitions formatted to EXT4)

a) removes journalism
Code:
tune2fs -o journal_data_writeback /block/path/to/system
tune2fs -O ^has_journal /block/path/to/system
tune2fs -o journal_data_writeback /block/path/to/cache
tune2fs -O ^has_journal /block/path/to/cache
tune2fs -o journal_data_writeback /block/path/to/data
tune2fs -O ^has_journal /block/path/to/data
b) perfect mount options
Code:
busybox mount -o remount,noatime,noauto_da_alloc,nodiratime,barrier=0,nobh /system
busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /data
busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /cache
7. Flags blocks as non-rotational and increases cache size
Code:
LOOP=`ls -d /sys/block/loop*`;
RAM=`ls -d /sys/block/ram*`;
MMC=`ls -d /sys/block/mmc*`;
for j in $LOOP $RAM
do
echo "0" > $j/queue/rotational;
echo "2048" > $j/queue/read_ahead_kb;
done
8. microSD card speed tweak
Code:
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb;
9. Defrags database files
Code:
for i in \
`find /data -iname "*.db"`
do \
sqlite3 $i 'VACUUM;';
done
9. Remove logger
Code:
rm /dev/log/main
10. Ondemand governor tweaks
Code:
SAMPLING_RATE=$(busybox expr `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency` \* 750 / 1000)
echo 95 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
echo $SAMPLING_RATE > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
11. Auto change governor and I/O Scheduler

a) I/O Scheduler (Best: MTD devices - VR; EMMC devices - SIO) - needs kernel with these
Code:
echo "vr" > /sys/block/mmcblk0/queue/scheduler
or
echo "sio" > /sys/block/mmcblk0/queue/scheduler
b) Governor (Best: Minmax > SavagedZen > Smoothass > Smartass > Interactive) - needs kernel with these
Code:
echo "governor-name-here" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
12. Auto-zipalign on boot
(needs zipalign bin)
Code:
http://forum.xda-developers.com/showthread.php?t=860586
13. Loopy Smoothness tweak
Code:
http://forum.xda-developers.com/show....php?t=1137554
http://forum.xda-developers.com/show....php?t=1205744
14. Move dalvik-cache to cache partition (if it's big enough) to free up data partition space
Code:
CACHESIZE=$(df -k /cache | tail -n1 | tr -s ' ' | cut -d ' ' -f2)
if [ $CACHESIZE -gt 80000 ]
then
echo "Large cache detected, moving dalvik-cache to /cache"
if [ ! -d /cache/dalvik-cache ]
then
busybox rm -rf /cache/dalvik-cache /data/dalvik-cache
mkdir /cache/dalvik-cache /data/dalvik-cache
fi

busybox chown 1000:1000 /cache/dalvik-cache
busybox chmod 0771 /cache/dalvik-cache

# bind mount dalvik-cache so we can still boot without the sdcard
busybox mount -o bind /cache/dalvik-cache /data/dalvik-cache
busybox chown 1000:1000 /data/dalvik-cache
busybox chmod 0771 /data/dalvik-cache
else
echo "Small cache detected, dalvik-cache will remain on /data"
fi
15. Disable normalize sleeper
Code:
mount -t debugfs none /sys/kernel/debug
echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features
16. OOM groupings and priorities tweaks - SuperCharger
Code:
http://forum.xda-developers.com/showthread.php?t=991276

GPS.conf
(create or edit your /system/etc/gps.conf with a file manager with root access)

For improving GPS lock time and signal.

a) European NTP server (replace for america or asia in your case)
Code:
NTP_SERVER=europe.pool.ntp.org
XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin
XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
b) SE supl for A-GPS (better than Nokia's or Google's)
Code:
SUPL_HOST=supl.sonyericsson.com
SUPL_PORT=7275

Other tweaks or guidelines

1. Patch your hosts file for blocking Ads
(please think before doing this; many developers are supported through this way)
Code:
You can use AdFree application for this or changing manually your hosts file.

Here are some databases:
http://www.mvps.org/winhelp2002/hosts.txt
http://pgl.yoyo.org/adservers/serverlist.php?showintro=0;hostformat=hosts
2. Use CyanogenMOD's APN list file - it's one of the most complete.
Code:
It's located in /system/etc/apns-conf.xml
3. Use UOT kitchen for basic theming on your device.
Code:
http://uot.dakra.lt/
4. Use Google's dns servers
Code:
Create an empty file, name it resolv.conf and put there these 2 lines:
nameserver 8.8.8.8
nameserver 8.8.4.4

Save to /system/etc/.
5. Update Superuser and su binary to latest version (3.0 beta)
Code:
http://goo-inside.me/superuser/
6. Disable sync feature in sqlite
(author: ownhere - needs a source for your device so you can compile the /system/lib/libsqlite.so)
Code:
Patch file here: http://forum.xda-developers.com/showthread.php?t=903507
7. Do not use task killers.

sysctl_tweaks and sysctl.conf tweaks
added by krabappel2548 Thank him

To make them work:
1. make a new file in /system/etc/init.d, name it sysctl_tweaks
2. make a new file in /system/etc, name it sysctl.conf
3. Paste the right code in the right file

1. sysctl_tweaks
Code:
#!/system/bin/sh
# grep sysctl /etc/init.d/*
/etc/init.d/02vm:# Load /sys/etc/sysctl.conf
/etc/init.d/02vm:sysctl -p
2. sysctl.conf
Code:
#sysctl.conf file

############################
# Battery life tweaks #
############################
sysctl -w vm.dirty_writeback_centisecs=3000;
sysctl -w vm.dirty_expire_centisecs=500;

############################
# kernel tweaks #
############################

sysctl -w kernel.sched_features=15834233;
sysctl -w kernel.msgmni=1024;
sysctl -w kernel.msgmax=64000;
sysctl -w kernel.shmmax=268435456;
sysctl -w kernel.shmall=2097152;
sysctl -w kernel.sem="500 512000 100 2048";
sysctl -w kernel.hung_task_timeout_secs=0;
sysctl -w kernel.sched_latency_ns=18000000;
sysctl -w kernel.sched_compat_yield=1;
sysctl -w kernel.sched_shares_ratelimit=256000;
sysctl -w kernel.sched_child_runs_first=0;
sysctl -w kernel.threads-max=10000;
sysctl -w kernel.panic=30;
sysctl -w kernel.panic_on_oops=1;
sysctl -w kernel.sched_features=24189;
sysctl -w kernel.sched_min_granularity_ns=1500000;
sysctl -w kernel.sched_wakeup_granularity_ns=3000000;

############################
# CPU tweaks #
############################

# Queue size modifications
sysctl -w net.core.optmem_max=20480;
sysctl -w net.unix.max_dgram_qlen=50;

# Net Core Settings
# Location: /proc/sys/net/core
sysctl -w net.core.wmem_max=524288;
sysctl -w net.core.rmem_max=524288;
sysctl -w net.core.rmem_default=256960;
sysctl -w net.core.wmem_default=256960;

############################
# VM & Filesystem tweaks #
############################
sysctl -w fs.lease-break-time=10;
sysctl -w fs.file-max=65536;
sysctl -w vm.overcommit_memory=1;
sysctl -w vm.min_free_order_shift=4;
sysctl -w vm.block_dump=0;
sysctl -w vm.oom_dump_tasks=1;
sysctl -w vm.page-cluster=3;

############################
# Net Speed tweaks #
############################

# UnderUtilized Networking Tweaks below as recommended by avgjoemomma (from XDA)
sysctl -w net.ipv4.tcp_congestion_control=cubic;

# Hardening the TCP/IP stack to SYN attacks
sysctl -w net.ipv4.tcp_syncookies=1;
sysctl -w net.ipv4.conf.all.rp_filter=1;
sysctl -w net.ipv4.conf.default.rp_filter=1;
sysctl -w net.ipv4.tcp_synack_retries=2;
sysctl -w net.ipv4.tcp_syn_retries=2;
sysctl -w net.ipv4.tcp_max_syn_backlog=1024;
sysctl -w net.ipv4.tcp_max_tw_buckets=16384;
sysctl -w net.ipv4.icmp_echo_ignore_all=1;
sysctl -w net.ipv4.icmp_ignore_bogus_error_responses=1;
sysctl -w net.ipv4.tcp_no_metrics_save=1;
sysctl -w net.ipv4.tcp_fin_timeout=15;
sysctl -w net.ipv4.tcp_keepalive_time=1800;
sysctl -w net.ipv4.ip_forward=0;
sysctl -w net.ipv4.tcp_moderate_rcvbuf=1;
sysctl -w net.ipv4.route.flush=1;
sysctl -w net.ipv4.udp_rmem_min=6144;
sysctl -w net.ipv4.udp_wmem_min=6144;
sysctl -w net.ipv4.tcp_rfc1337=1;
sysctl -w net.ipv4.ip_no_pmtu_disc=0;
sysctl -w net.ipv4.tcp_ecn=0;
sysctl -w net.ipv4.tcp_sack=1;
sysctl -w net.ipv4.tcp_fack=1;

# Don't accept source routing
sysctl -w net.ipv4.conf.default.accept_source_route=0 ;
sysctl -w net.ipv4.conf.all.accept_source_route=0;

# Don't accept redirects
sysctl -w net.ipv4.conf.all.accept_redirects=0;
sysctl -w net.ipv4.conf.default.accept_redirects=0;
sysctl -w net.ipv4.conf.all.secure_redirects=0;
sysctl -w net.ipv4.conf.default.secure_redirects=0;
This is another init.d tweak It's a battery calibration script

3. This is my battery calibration tweak
Code:
#!/system/bin/sh
# ========================================
# init.d script for KA Xperia SSpeed
# made by krabappel2548
# ========================================

SLEEP=120

if [ -e /data/.battery-calibrated ] ; then
exit 0
fi

(
while : ; do
LEVEL=$(cat /sys/class/power_supply/battery/capacity)
CUR=$(cat /sys/class/power_supply/battery/batt_current)
if [ "$LEVEL" == "100" ] && [ "$CUR" == "0" ] ; then
log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR***: calibrating..."
rm -f /data/system/batterystats.bin
touch /data/.battery-calibrated
exit 0
fi
# log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR ***: sleeping for $SLEEP s..."
sleep $SLEEP
done
) &

#Disable normalize sleeper
mount -t debugfs none /sys/kernel/debug
echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features

#battery tweaks (sleepers)
mount -t debugfs none /sys/kernel/debug
echo NO_NEW_FAIR_SLEEPERS > /sys/kernel/debug/sched_features;
echo NO_NORMALIZED_SLEEPERS > /sys/kernel/debug/sched_features;
umount /sys/kernel/debug


Tips Combined twaks and apps
Still testing better values to add!

1. incredibile fast browsing in zoomed pages with no shutters!

♦ VM Heapsize; higher the RAM, higher the hp can be
Code:
dalvik.vm.heapsize=96m
♦ Helps scrolling responsiveness
Code:
windowsmgr.max_events_per_sec=250
♦ Opera Mobile Browser

2. Faster internet speed

♦ Signal (3G) tweaks
Code:
ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5
♦ Net speed tweaks
Code:
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
Alright, I think this is it for now.
If you have any other tweaks or better values, you can PM me and I'll include them

thanks to
kenzo
krabappel2548

sorry for the whole quoted msg but please have a look here before you thanx to starter of this thread
As you prolly see there is EXACTLY same post as here but with wrapped codes on each tweak ;)
 

Nooby Arc S User

Senior Member
Sep 2, 2012
277
125
Init.d
(needs ROM with init.d access and busybox, open empty file, insert header #!/system/bin/sh and put these there, save in /system/etc/init.d and name it something like 77tweaks)

1. strict minfree handler tweak
Code:
echo "2048,3072,6144,15360,17920,20480" > /sys/module/lowmemorykiller/parameters/minfree

That seems very strict for a 512mb Ram device. Have you tested this one on arc/s?
 

Joecascio2000

Senior Member
Turn Off LTE on Boot Init.d Script

On my LG Optimus G, even though I can select "GSM / WCDMA preferred" to disable LTE after a reboot it defaults back to "GSM / WCDMA / LTE".

I don't live anywhere near LTE and would like to have LTE turned off after powering up my phone. Is there anyway to create an init'd script for that?

I have done so much research and came up empty. This is actually a greatly wanted feature in the LGOG forums. Any help would be greatly appreciated. Thanks.
 

navid0308

Senior Member
Oct 14, 2012
867
306
Dhaka
Original Thread: http://forum.xda-developers.com/showthread.php?t=1709836

I've been collecting some tweaks and scripts and seems to me it's now time to share it. While some values in terms of optimization might be different from device to device, I've found these pretty consistent throughout many.

I didn't tested all of them, and i don't assume any risk!!! Use them at you own risk!!!

Some useful tips on how to use them at the end of the post

This thread will be updated when new/better things come out

Superuser, Busybox install/update

1. Easily install Busybox (YOU NEED ROOT FIRST)
Code:
https://play.google.com/store/apps/...DEsImNvbS5qcnVtbXkuYnVzeWJveC5pbnN0YWxsZXIiXQ..
2. UPDATE SuperUser (root app)
Code:
http://goo.im/superuser/


Build.prop
(edit your /system/build.prop with a file manager with root access)

Careful for already existing settings. In this case, just change the values.

1. Force launcher into memory
Code:
ro.HOME_APP_ADJ=1
2. Raise JPG quality to 100%
Code:
ro.media.enc.jpeg.quality=100
3. VM Heapsize; higher the RAM, higher the hp can be
Code:
dalvik.vm.heapsize=96m
4. Render UI with GPU
Code:
debug.sf.hw=1
5. Decrease dialing out delay
Code:
ro.telephony.call_ring.delay=0
6. Helps scrolling responsiveness
Code:
windowsmgr.max_events_per_sec=150
7. Save battery
Code:
wifi.supplicant_scan_interval=180
pm.sleep_mode=1
ro.ril.disable.power.collapse=0
8. Disable debugging notify icon on statusbar
Code:
persist.adb.notify=0
9. Increase overall touch responsiveness
Code:
debug.performance.tuning=1
video.accelerate.hw=1
10. Raise photo and video recording quality
Code:
ro.media.dec.jpeg.memcap=12000000
ro.media.enc.hprof.vid.bps=12000000
11. Signal (3G) tweaks
Code:
ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5
12. Net speed tweaks
Code:
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
13. Disable blackscreen issue after a call
Code:
ro.lge.proximity.delay=25
mot.proximity.delay=25
14. Fix some application issues
Code:
ro.kernel.android.checkjni=0
15. Phone will not wake up from hitting the volume rocker
Code:
ro.config.hwfeature_wakeupkey=0
16. Force button lights on when screen is on
Code:
ro.mot.buttonlight.timeout=0
17. Disable boot animation for faster boot
Code:
debug.sf.nobootanimation=1
18. Miscellaneous flags
Code:
ro.config.hw_menu_unlockscreen=false
persist.sys.use_dithering=0
persist.sys.purgeable_assets=1
dalvik.vm.dexopt-flags=m=y
ro.mot.eri.losalert.delay=1000
19. Specifics to some LG devices
Code:
persist.service.pcsync.enable=0
persist.service.lgospd.enable=0
user.feature.flex=true
user.feature.lgdrm=false
user.feature.lgresource=false
user.feature.lgpoweroff=false
user.feature.ls_event=false
user.feature.ls_normal=false
user.feature.sui=false

Init.d
(needs ROM with init.d access and busybox, open empty file, insert header #!/system/bin/sh and put these there, save in /system/etc/init.d and name it something like 77tweaks)

1. strict minfree handler tweak
Code:
echo "2048,3072,6144,15360,17920,20480" > /sys/module/lowmemorykiller/parameters/minfree
2. internet speed tweaks
Code:
echo "0" > /proc/sys/net/ipv4/tcp_timestamps;
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse;
echo "1" > /proc/sys/net/ipv4/tcp_sack;
echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle;
echo "1" > /proc/sys/net/ipv4/tcp_window_scaling;
echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes;
echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl;
echo "30" > /proc/sys/net/ipv4/tcp_fin_timeout;
echo "404480" > /proc/sys/net/core/wmem_max;
echo "404480" > /proc/sys/net/core/rmem_max;
echo "256960" > /proc/sys/net/core/rmem_default;
echo "256960" > /proc/sys/net/core/wmem_default;
echo "4096,16384,404480" > /proc/sys/net/ipv4/tcp_wmem;
echo "4096,87380,404480" > /proc/sys/net/ipv4/tcp_rmem;
3. vm management tweaks
Code:
echo "4096" > /proc/sys/vm/min_free_kbytes
echo "0" > /proc/sys/vm/oom_kill_allocating_task;
echo "0" > /proc/sys/vm/panic_on_oom;
echo "0" > /proc/sys/vm/laptop_mode;
echo "0" > /proc/sys/vm/swappiness
echo "50" > /proc/sys/vm/vfs_cache_pressure
echo "90" > /proc/sys/vm/dirty_ratio
echo "70" > /proc/sys/vm/dirty_background_ratio
4. misc kernel tweaks
Code:
echo "8" > /proc/sys/vm/page-cluster;
echo "64000" > /proc/sys/kernel/msgmni;
echo "64000" > /proc/sys/kernel/msgmax;
echo "10" > /proc/sys/fs/lease-break-time;
echo "500,512000,64,2048" > /proc/sys/kernel/sem;
5. battery tweaks
Code:
echo "500" > /proc/sys/vm/dirty_expire_centisecs
echo "1000" > /proc/sys/vm/dirty_writeback_centisecs
6. EXT4 tweaks (greatly increase I/O)
(needs /system, /cache, /data partitions formatted to EXT4)

a) removes journalism
Code:
tune2fs -o journal_data_writeback /block/path/to/system
tune2fs -O ^has_journal /block/path/to/system
tune2fs -o journal_data_writeback /block/path/to/cache
tune2fs -O ^has_journal /block/path/to/cache
tune2fs -o journal_data_writeback /block/path/to/data
tune2fs -O ^has_journal /block/path/to/data
b) perfect mount options
Code:
busybox mount -o remount,noatime,noauto_da_alloc,nodiratime,barrier=0,nobh /system
busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /data
busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /cache
7. Flags blocks as non-rotational and increases cache size
Code:
LOOP=`ls -d /sys/block/loop*`;
RAM=`ls -d /sys/block/ram*`;
MMC=`ls -d /sys/block/mmc*`;
for j in $LOOP $RAM
do
echo "0" > $j/queue/rotational;
echo "2048" > $j/queue/read_ahead_kb;
done
8. microSD card speed tweak
Code:
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb;
9. Defrags database files
Code:
for i in \
`find /data -iname "*.db"`
do \
sqlite3 $i 'VACUUM;';
done
9. Remove logger
Code:
rm /dev/log/main
10. Ondemand governor tweaks
Code:
SAMPLING_RATE=$(busybox expr `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency` \* 750 / 1000)
echo 95 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
echo $SAMPLING_RATE > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
11. Auto change governor and I/O Scheduler

a) I/O Scheduler (Best: MTD devices - VR; EMMC devices - SIO) - needs kernel with these
Code:
echo "vr" > /sys/block/mmcblk0/queue/scheduler
or
echo "sio" > /sys/block/mmcblk0/queue/scheduler
b) Governor (Best: Minmax > SavagedZen > Smoothass > Smartass > Interactive) - needs kernel with these
Code:
echo "governor-name-here" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
12. Auto-zipalign on boot
(needs zipalign bin)
Code:
http://forum.xda-developers.com/showthread.php?t=860586
13. Loopy Smoothness tweak
Code:
http://forum.xda-developers.com/show....php?t=1137554
http://forum.xda-developers.com/show....php?t=1205744
14. Move dalvik-cache to cache partition (if it's big enough) to free up data partition space
Code:
CACHESIZE=$(df -k /cache | tail -n1 | tr -s ' ' | cut -d ' ' -f2)
if [ $CACHESIZE -gt 80000 ]
then
echo "Large cache detected, moving dalvik-cache to /cache"
if [ ! -d /cache/dalvik-cache ]
then
busybox rm -rf /cache/dalvik-cache /data/dalvik-cache
mkdir /cache/dalvik-cache /data/dalvik-cache
fi

busybox chown 1000:1000 /cache/dalvik-cache
busybox chmod 0771 /cache/dalvik-cache

# bind mount dalvik-cache so we can still boot without the sdcard
busybox mount -o bind /cache/dalvik-cache /data/dalvik-cache
busybox chown 1000:1000 /data/dalvik-cache
busybox chmod 0771 /data/dalvik-cache
else
echo "Small cache detected, dalvik-cache will remain on /data"
fi
15. Disable normalize sleeper
Code:
mount -t debugfs none /sys/kernel/debug
echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features
16. OOM groupings and priorities tweaks - SuperCharger
Code:
http://forum.xda-developers.com/showthread.php?t=991276

GPS.conf
(create or edit your /system/etc/gps.conf with a file manager with root access)

For improving GPS lock time and signal.

a) European NTP server (replace for america or asia in your case)
Code:
NTP_SERVER=europe.pool.ntp.org
XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin
XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
b) SE supl for A-GPS (better than Nokia's or Google's)
Code:
SUPL_HOST=supl.sonyericsson.com
SUPL_PORT=7275

Other tweaks or guidelines

1. Patch your hosts file for blocking Ads
(please think before doing this; many developers are supported through this way)
Code:
You can use AdFree application for this or changing manually your hosts file.

Here are some databases:
http://www.mvps.org/winhelp2002/hosts.txt
http://pgl.yoyo.org/adservers/serverlist.php?showintro=0;hostformat=hosts
2. Use CyanogenMOD's APN list file - it's one of the most complete.
Code:
It's located in /system/etc/apns-conf.xml
3. Use UOT kitchen for basic theming on your device.
Code:
http://uot.dakra.lt/
4. Use Google's dns servers
Code:
Create an empty file, name it resolv.conf and put there these 2 lines:
nameserver 8.8.8.8
nameserver 8.8.4.4

Save to /system/etc/.
5. Update Superuser and su binary to latest version (3.0 beta)
Code:
http://goo-inside.me/superuser/
6. Disable sync feature in sqlite
(author: ownhere - needs a source for your device so you can compile the /system/lib/libsqlite.so)
Code:
Patch file here: http://forum.xda-developers.com/showthread.php?t=903507
7. Do not use task killers.

sysctl_tweaks and sysctl.conf tweaks
added by krabappel2548 Thank him

To make them work:
1. make a new file in /system/etc/init.d, name it sysctl_tweaks
2. make a new file in /system/etc, name it sysctl.conf
3. Paste the right code in the right file

1. sysctl_tweaks
Code:
#!/system/bin/sh
# grep sysctl /etc/init.d/*
/etc/init.d/02vm:# Load /sys/etc/sysctl.conf
/etc/init.d/02vm:sysctl -p
2. sysctl.conf
Code:
#sysctl.conf file

############################
# Battery life tweaks #
############################
sysctl -w vm.dirty_writeback_centisecs=3000;
sysctl -w vm.dirty_expire_centisecs=500;

############################
# kernel tweaks #
############################

sysctl -w kernel.sched_features=15834233;
sysctl -w kernel.msgmni=1024;
sysctl -w kernel.msgmax=64000;
sysctl -w kernel.shmmax=268435456;
sysctl -w kernel.shmall=2097152;
sysctl -w kernel.sem="500 512000 100 2048";
sysctl -w kernel.hung_task_timeout_secs=0;
sysctl -w kernel.sched_latency_ns=18000000;
sysctl -w kernel.sched_compat_yield=1;
sysctl -w kernel.sched_shares_ratelimit=256000;
sysctl -w kernel.sched_child_runs_first=0;
sysctl -w kernel.threads-max=10000;
sysctl -w kernel.panic=30;
sysctl -w kernel.panic_on_oops=1;
sysctl -w kernel.sched_features=24189;
sysctl -w kernel.sched_min_granularity_ns=1500000;
sysctl -w kernel.sched_wakeup_granularity_ns=3000000;

############################
# CPU tweaks #
############################

# Queue size modifications
sysctl -w net.core.optmem_max=20480;
sysctl -w net.unix.max_dgram_qlen=50;

# Net Core Settings
# Location: /proc/sys/net/core
sysctl -w net.core.wmem_max=524288;
sysctl -w net.core.rmem_max=524288;
sysctl -w net.core.rmem_default=256960;
sysctl -w net.core.wmem_default=256960;

############################
# VM & Filesystem tweaks #
############################
sysctl -w fs.lease-break-time=10;
sysctl -w fs.file-max=65536;
sysctl -w vm.overcommit_memory=1;
sysctl -w vm.min_free_order_shift=4;
sysctl -w vm.block_dump=0;
sysctl -w vm.oom_dump_tasks=1;
sysctl -w vm.page-cluster=3;

############################
# Net Speed tweaks #
############################

# UnderUtilized Networking Tweaks below as recommended by avgjoemomma (from XDA)
sysctl -w net.ipv4.tcp_congestion_control=cubic;

# Hardening the TCP/IP stack to SYN attacks
sysctl -w net.ipv4.tcp_syncookies=1;
sysctl -w net.ipv4.conf.all.rp_filter=1;
sysctl -w net.ipv4.conf.default.rp_filter=1;
sysctl -w net.ipv4.tcp_synack_retries=2;
sysctl -w net.ipv4.tcp_syn_retries=2;
sysctl -w net.ipv4.tcp_max_syn_backlog=1024;
sysctl -w net.ipv4.tcp_max_tw_buckets=16384;
sysctl -w net.ipv4.icmp_echo_ignore_all=1;
sysctl -w net.ipv4.icmp_ignore_bogus_error_responses=1;
sysctl -w net.ipv4.tcp_no_metrics_save=1;
sysctl -w net.ipv4.tcp_fin_timeout=15;
sysctl -w net.ipv4.tcp_keepalive_time=1800;
sysctl -w net.ipv4.ip_forward=0;
sysctl -w net.ipv4.tcp_moderate_rcvbuf=1;
sysctl -w net.ipv4.route.flush=1;
sysctl -w net.ipv4.udp_rmem_min=6144;
sysctl -w net.ipv4.udp_wmem_min=6144;
sysctl -w net.ipv4.tcp_rfc1337=1;
sysctl -w net.ipv4.ip_no_pmtu_disc=0;
sysctl -w net.ipv4.tcp_ecn=0;
sysctl -w net.ipv4.tcp_sack=1;
sysctl -w net.ipv4.tcp_fack=1;

# Don't accept source routing
sysctl -w net.ipv4.conf.default.accept_source_route=0 ;
sysctl -w net.ipv4.conf.all.accept_source_route=0;

# Don't accept redirects
sysctl -w net.ipv4.conf.all.accept_redirects=0;
sysctl -w net.ipv4.conf.default.accept_redirects=0;
sysctl -w net.ipv4.conf.all.secure_redirects=0;
sysctl -w net.ipv4.conf.default.secure_redirects=0;
This is another init.d tweak It's a battery calibration script

3. This is my battery calibration tweak
Code:
#!/system/bin/sh
# ========================================
# init.d script for KA Xperia SSpeed
# made by krabappel2548
# ========================================

SLEEP=120

if [ -e /data/.battery-calibrated ] ; then
exit 0
fi

(
while : ; do
LEVEL=$(cat /sys/class/power_supply/battery/capacity)
CUR=$(cat /sys/class/power_supply/battery/batt_current)
if [ "$LEVEL" == "100" ] && [ "$CUR" == "0" ] ; then
log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR***: calibrating..."
rm -f /data/system/batterystats.bin
touch /data/.battery-calibrated
exit 0
fi
# log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR ***: sleeping for $SLEEP s..."
sleep $SLEEP
done
) &

#Disable normalize sleeper
mount -t debugfs none /sys/kernel/debug
echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features

#battery tweaks (sleepers)
mount -t debugfs none /sys/kernel/debug
echo NO_NEW_FAIR_SLEEPERS > /sys/kernel/debug/sched_features;
echo NO_NORMALIZED_SLEEPERS > /sys/kernel/debug/sched_features;
umount /sys/kernel/debug


Tips Combined twaks and apps
Still testing better values to add!

1. incredibile fast browsing in zoomed pages with no shutters!

♦ VM Heapsize; higher the RAM, higher the hp can be
Code:
dalvik.vm.heapsize=96m
♦ Helps scrolling responsiveness
Code:
windowsmgr.max_events_per_sec=250
♦ Opera Mobile Browser

2. Faster internet speed

♦ Signal (3G) tweaks
Code:
ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5
♦ Net speed tweaks
Code:
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
Alright, I think this is it for now.
If you have any other tweaks or better values, you can PM me and I'll include them

thanks to
kenzo
krabappel2548
I wish someone could turn this into a flashable zip. I'm a noob so it would be great!
 

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  • 73
    Original Thread: http://forum.xda-developers.com/showthread.php?t=1709836

    I've been collecting some tweaks and scripts and seems to me it's now time to share it. While some values in terms of optimization might be different from device to device, I've found these pretty consistent throughout many.

    I didn't tested all of them, and i don't assume any risk!!! Use them at you own risk!!!

    Some useful tips on how to use them at the end of the post

    This thread will be updated when new/better things come out

    Superuser, Busybox install/update

    1. Easily install Busybox (YOU NEED ROOT FIRST)
    Code:
    https://play.google.com/store/apps/...DEsImNvbS5qcnVtbXkuYnVzeWJveC5pbnN0YWxsZXIiXQ..
    2. UPDATE SuperUser (root app)
    Code:
    http://goo.im/superuser/


    Build.prop
    (edit your /system/build.prop with a file manager with root access)

    Careful for already existing settings. In this case, just change the values.

    1. Force launcher into memory
    Code:
    ro.HOME_APP_ADJ=1
    2. Raise JPG quality to 100%
    Code:
    ro.media.enc.jpeg.quality=100
    3. VM Heapsize; higher the RAM, higher the hp can be
    Code:
    dalvik.vm.heapsize=96m
    4. Render UI with GPU
    Code:
    debug.sf.hw=1
    5. Decrease dialing out delay
    Code:
    ro.telephony.call_ring.delay=0
    6. Helps scrolling responsiveness
    Code:
    windowsmgr.max_events_per_sec=150
    7. Save battery
    Code:
    wifi.supplicant_scan_interval=180
    pm.sleep_mode=1
    ro.ril.disable.power.collapse=0
    8. Disable debugging notify icon on statusbar
    Code:
    persist.adb.notify=0
    9. Increase overall touch responsiveness
    Code:
    debug.performance.tuning=1
    video.accelerate.hw=1
    10. Raise photo and video recording quality
    Code:
    ro.media.dec.jpeg.memcap=12000000
    ro.media.enc.hprof.vid.bps=12000000
    11. Signal (3G) tweaks
    Code:
    ro.ril.hsxpa=2
    ro.ril.gprsclass=10
    ro.ril.hep=1
    ro.ril.enable.dtm=1
    ro.ril.hsdpa.category=10
    ro.ril.enable.a53=1
    ro.ril.enable.3g.prefix=1
    ro.ril.htcmaskw1.bitmask=4294967295
    ro.ril.htcmaskw1=14449
    ro.ril.hsupa.category=5
    12. Net speed tweaks
    Code:
    net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
    13. Disable blackscreen issue after a call
    Code:
    ro.lge.proximity.delay=25
    mot.proximity.delay=25
    14. Fix some application issues
    Code:
    ro.kernel.android.checkjni=0
    15. Phone will not wake up from hitting the volume rocker
    Code:
    ro.config.hwfeature_wakeupkey=0
    16. Force button lights on when screen is on
    Code:
    ro.mot.buttonlight.timeout=0
    17. Disable boot animation for faster boot
    Code:
    debug.sf.nobootanimation=1
    18. Miscellaneous flags
    Code:
    ro.config.hw_menu_unlockscreen=false
    persist.sys.use_dithering=0
    persist.sys.purgeable_assets=1
    dalvik.vm.dexopt-flags=m=y
    ro.mot.eri.losalert.delay=1000
    19. Specifics to some LG devices
    Code:
    persist.service.pcsync.enable=0
    persist.service.lgospd.enable=0
    user.feature.flex=true
    user.feature.lgdrm=false
    user.feature.lgresource=false
    user.feature.lgpoweroff=false
    user.feature.ls_event=false
    user.feature.ls_normal=false
    user.feature.sui=false

    Init.d
    (needs ROM with init.d access and busybox, open empty file, insert header #!/system/bin/sh and put these there, save in /system/etc/init.d and name it something like 77tweaks)

    1. strict minfree handler tweak
    Code:
    echo "2048,3072,6144,15360,17920,20480" > /sys/module/lowmemorykiller/parameters/minfree
    2. internet speed tweaks
    Code:
    echo "0" > /proc/sys/net/ipv4/tcp_timestamps;
    echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse;
    echo "1" > /proc/sys/net/ipv4/tcp_sack;
    echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle;
    echo "1" > /proc/sys/net/ipv4/tcp_window_scaling;
    echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes;
    echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl;
    echo "30" > /proc/sys/net/ipv4/tcp_fin_timeout;
    echo "404480" > /proc/sys/net/core/wmem_max;
    echo "404480" > /proc/sys/net/core/rmem_max;
    echo "256960" > /proc/sys/net/core/rmem_default;
    echo "256960" > /proc/sys/net/core/wmem_default;
    echo "4096,16384,404480" > /proc/sys/net/ipv4/tcp_wmem;
    echo "4096,87380,404480" > /proc/sys/net/ipv4/tcp_rmem;
    3. vm management tweaks
    Code:
    echo "4096" > /proc/sys/vm/min_free_kbytes
    echo "0" > /proc/sys/vm/oom_kill_allocating_task;
    echo "0" > /proc/sys/vm/panic_on_oom;
    echo "0" > /proc/sys/vm/laptop_mode;
    echo "0" > /proc/sys/vm/swappiness
    echo "50" > /proc/sys/vm/vfs_cache_pressure
    echo "90" > /proc/sys/vm/dirty_ratio
    echo "70" > /proc/sys/vm/dirty_background_ratio
    4. misc kernel tweaks
    Code:
    echo "8" > /proc/sys/vm/page-cluster;
    echo "64000" > /proc/sys/kernel/msgmni;
    echo "64000" > /proc/sys/kernel/msgmax;
    echo "10" > /proc/sys/fs/lease-break-time;
    echo "500,512000,64,2048" > /proc/sys/kernel/sem;
    5. battery tweaks
    Code:
    echo "500" > /proc/sys/vm/dirty_expire_centisecs
    echo "1000" > /proc/sys/vm/dirty_writeback_centisecs
    6. EXT4 tweaks (greatly increase I/O)
    (needs /system, /cache, /data partitions formatted to EXT4)

    a) removes journalism
    Code:
    tune2fs -o journal_data_writeback /block/path/to/system
    tune2fs -O ^has_journal /block/path/to/system
    tune2fs -o journal_data_writeback /block/path/to/cache
    tune2fs -O ^has_journal /block/path/to/cache
    tune2fs -o journal_data_writeback /block/path/to/data
    tune2fs -O ^has_journal /block/path/to/data
    b) perfect mount options
    Code:
    busybox mount -o remount,noatime,noauto_da_alloc,nodiratime,barrier=0,nobh /system
    busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /data
    busybox mount -o remount,noatime,noauto_da_alloc,nosuid,nodev,nodiratime,barrier=0,nobh /cache
    7. Flags blocks as non-rotational and increases cache size
    Code:
    LOOP=`ls -d /sys/block/loop*`;
    RAM=`ls -d /sys/block/ram*`;
    MMC=`ls -d /sys/block/mmc*`;
    for j in $LOOP $RAM
    do
    echo "0" > $j/queue/rotational;
    echo "2048" > $j/queue/read_ahead_kb;
    done
    8. microSD card speed tweak
    Code:
    echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb;
    9. Defrags database files
    Code:
    for i in \
    `find /data -iname "*.db"`
    do \
    sqlite3 $i 'VACUUM;';
    done
    9. Remove logger
    Code:
    rm /dev/log/main
    10. Ondemand governor tweaks
    Code:
    SAMPLING_RATE=$(busybox expr `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency` \* 750 / 1000)
    echo 95 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
    echo $SAMPLING_RATE > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
    11. Auto change governor and I/O Scheduler

    a) I/O Scheduler (Best: MTD devices - VR; EMMC devices - SIO) - needs kernel with these
    Code:
    echo "vr" > /sys/block/mmcblk0/queue/scheduler
    or
    echo "sio" > /sys/block/mmcblk0/queue/scheduler
    b) Governor (Best: Minmax > SavagedZen > Smoothass > Smartass > Interactive) - needs kernel with these
    Code:
    echo "governor-name-here" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    12. Auto-zipalign on boot
    (needs zipalign bin)
    Code:
    http://forum.xda-developers.com/showthread.php?t=860586
    13. Loopy Smoothness tweak
    Code:
    http://forum.xda-developers.com/show....php?t=1137554
    http://forum.xda-developers.com/show....php?t=1205744
    14. Move dalvik-cache to cache partition (if it's big enough) to free up data partition space
    Code:
    CACHESIZE=$(df -k /cache | tail -n1 | tr -s ' ' | cut -d ' ' -f2)
    if [ $CACHESIZE -gt 80000 ]
    then
    echo "Large cache detected, moving dalvik-cache to /cache"
    if [ ! -d /cache/dalvik-cache ]
    then
    busybox rm -rf /cache/dalvik-cache /data/dalvik-cache
    mkdir /cache/dalvik-cache /data/dalvik-cache
    fi

    busybox chown 1000:1000 /cache/dalvik-cache
    busybox chmod 0771 /cache/dalvik-cache

    # bind mount dalvik-cache so we can still boot without the sdcard
    busybox mount -o bind /cache/dalvik-cache /data/dalvik-cache
    busybox chown 1000:1000 /data/dalvik-cache
    busybox chmod 0771 /data/dalvik-cache
    else
    echo "Small cache detected, dalvik-cache will remain on /data"
    fi
    15. Disable normalize sleeper
    Code:
    mount -t debugfs none /sys/kernel/debug
    echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features
    16. OOM groupings and priorities tweaks - SuperCharger
    Code:
    http://forum.xda-developers.com/showthread.php?t=991276

    GPS.conf
    (create or edit your /system/etc/gps.conf with a file manager with root access)

    For improving GPS lock time and signal.

    a) European NTP server (replace for america or asia in your case)
    Code:
    NTP_SERVER=europe.pool.ntp.org
    XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin
    XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
    XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
    b) SE supl for A-GPS (better than Nokia's or Google's)
    Code:
    SUPL_HOST=supl.sonyericsson.com
    SUPL_PORT=7275

    Other tweaks or guidelines

    1. Patch your hosts file for blocking Ads
    (please think before doing this; many developers are supported through this way)
    Code:
    You can use AdFree application for this or changing manually your hosts file.

    Here are some databases:
    http://www.mvps.org/winhelp2002/hosts.txt
    http://pgl.yoyo.org/adservers/serverlist.php?showintro=0;hostformat=hosts
    2. Use CyanogenMOD's APN list file - it's one of the most complete.
    Code:
    It's located in /system/etc/apns-conf.xml
    3. Use UOT kitchen for basic theming on your device.
    Code:
    http://uot.dakra.lt/
    4. Use Google's dns servers
    Code:
    Create an empty file, name it resolv.conf and put there these 2 lines:
    nameserver 8.8.8.8
    nameserver 8.8.4.4

    Save to /system/etc/.
    5. Update Superuser and su binary to latest version (3.0 beta)
    Code:
    http://goo-inside.me/superuser/
    6. Disable sync feature in sqlite
    (author: ownhere - needs a source for your device so you can compile the /system/lib/libsqlite.so)
    Code:
    Patch file here: http://forum.xda-developers.com/showthread.php?t=903507
    7. Do not use task killers.

    sysctl_tweaks and sysctl.conf tweaks
    added by krabappel2548 Thank him

    To make them work:
    1. make a new file in /system/etc/init.d, name it sysctl_tweaks
    2. make a new file in /system/etc, name it sysctl.conf
    3. Paste the right code in the right file

    1. sysctl_tweaks
    Code:
    #!/system/bin/sh
    # grep sysctl /etc/init.d/*
    /etc/init.d/02vm:# Load /sys/etc/sysctl.conf
    /etc/init.d/02vm:sysctl -p
    2. sysctl.conf
    Code:
    #sysctl.conf file

    ############################
    # Battery life tweaks #
    ############################
    sysctl -w vm.dirty_writeback_centisecs=3000;
    sysctl -w vm.dirty_expire_centisecs=500;

    ############################
    # kernel tweaks #
    ############################

    sysctl -w kernel.sched_features=15834233;
    sysctl -w kernel.msgmni=1024;
    sysctl -w kernel.msgmax=64000;
    sysctl -w kernel.shmmax=268435456;
    sysctl -w kernel.shmall=2097152;
    sysctl -w kernel.sem="500 512000 100 2048";
    sysctl -w kernel.hung_task_timeout_secs=0;
    sysctl -w kernel.sched_latency_ns=18000000;
    sysctl -w kernel.sched_compat_yield=1;
    sysctl -w kernel.sched_shares_ratelimit=256000;
    sysctl -w kernel.sched_child_runs_first=0;
    sysctl -w kernel.threads-max=10000;
    sysctl -w kernel.panic=30;
    sysctl -w kernel.panic_on_oops=1;
    sysctl -w kernel.sched_features=24189;
    sysctl -w kernel.sched_min_granularity_ns=1500000;
    sysctl -w kernel.sched_wakeup_granularity_ns=3000000;

    ############################
    # CPU tweaks #
    ############################

    # Queue size modifications
    sysctl -w net.core.optmem_max=20480;
    sysctl -w net.unix.max_dgram_qlen=50;

    # Net Core Settings
    # Location: /proc/sys/net/core
    sysctl -w net.core.wmem_max=524288;
    sysctl -w net.core.rmem_max=524288;
    sysctl -w net.core.rmem_default=256960;
    sysctl -w net.core.wmem_default=256960;

    ############################
    # VM & Filesystem tweaks #
    ############################
    sysctl -w fs.lease-break-time=10;
    sysctl -w fs.file-max=65536;
    sysctl -w vm.overcommit_memory=1;
    sysctl -w vm.min_free_order_shift=4;
    sysctl -w vm.block_dump=0;
    sysctl -w vm.oom_dump_tasks=1;
    sysctl -w vm.page-cluster=3;

    ############################
    # Net Speed tweaks #
    ############################

    # UnderUtilized Networking Tweaks below as recommended by avgjoemomma (from XDA)
    sysctl -w net.ipv4.tcp_congestion_control=cubic;

    # Hardening the TCP/IP stack to SYN attacks
    sysctl -w net.ipv4.tcp_syncookies=1;
    sysctl -w net.ipv4.conf.all.rp_filter=1;
    sysctl -w net.ipv4.conf.default.rp_filter=1;
    sysctl -w net.ipv4.tcp_synack_retries=2;
    sysctl -w net.ipv4.tcp_syn_retries=2;
    sysctl -w net.ipv4.tcp_max_syn_backlog=1024;
    sysctl -w net.ipv4.tcp_max_tw_buckets=16384;
    sysctl -w net.ipv4.icmp_echo_ignore_all=1;
    sysctl -w net.ipv4.icmp_ignore_bogus_error_responses=1;
    sysctl -w net.ipv4.tcp_no_metrics_save=1;
    sysctl -w net.ipv4.tcp_fin_timeout=15;
    sysctl -w net.ipv4.tcp_keepalive_time=1800;
    sysctl -w net.ipv4.ip_forward=0;
    sysctl -w net.ipv4.tcp_moderate_rcvbuf=1;
    sysctl -w net.ipv4.route.flush=1;
    sysctl -w net.ipv4.udp_rmem_min=6144;
    sysctl -w net.ipv4.udp_wmem_min=6144;
    sysctl -w net.ipv4.tcp_rfc1337=1;
    sysctl -w net.ipv4.ip_no_pmtu_disc=0;
    sysctl -w net.ipv4.tcp_ecn=0;
    sysctl -w net.ipv4.tcp_sack=1;
    sysctl -w net.ipv4.tcp_fack=1;

    # Don't accept source routing
    sysctl -w net.ipv4.conf.default.accept_source_route=0 ;
    sysctl -w net.ipv4.conf.all.accept_source_route=0;

    # Don't accept redirects
    sysctl -w net.ipv4.conf.all.accept_redirects=0;
    sysctl -w net.ipv4.conf.default.accept_redirects=0;
    sysctl -w net.ipv4.conf.all.secure_redirects=0;
    sysctl -w net.ipv4.conf.default.secure_redirects=0;
    This is another init.d tweak It's a battery calibration script

    3. This is my battery calibration tweak
    Code:
    #!/system/bin/sh
    # ========================================
    # init.d script for KA Xperia SSpeed
    # made by krabappel2548
    # ========================================

    SLEEP=120

    if [ -e /data/.battery-calibrated ] ; then
    exit 0
    fi

    (
    while : ; do
    LEVEL=$(cat /sys/class/power_supply/battery/capacity)
    CUR=$(cat /sys/class/power_supply/battery/batt_current)
    if [ "$LEVEL" == "100" ] && [ "$CUR" == "0" ] ; then
    log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR***: calibrating..."
    rm -f /data/system/batterystats.bin
    touch /data/.battery-calibrated
    exit 0
    fi
    # log -p i -t battery-calibration "*** LEVEL: $LEVEL CUR: $CUR ***: sleeping for $SLEEP s..."
    sleep $SLEEP
    done
    ) &

    #Disable normalize sleeper
    mount -t debugfs none /sys/kernel/debug
    echo NO_NORMALIZED_SLEEPER > /sys/kernel/debug/sched_features

    #battery tweaks (sleepers)
    mount -t debugfs none /sys/kernel/debug
    echo NO_NEW_FAIR_SLEEPERS > /sys/kernel/debug/sched_features;
    echo NO_NORMALIZED_SLEEPERS > /sys/kernel/debug/sched_features;
    umount /sys/kernel/debug


    Tips Combined twaks and apps
    Still testing better values to add!

    1. incredibile fast browsing in zoomed pages with no shutters!

    ♦ VM Heapsize; higher the RAM, higher the hp can be
    Code:
    dalvik.vm.heapsize=96m
    ♦ Helps scrolling responsiveness
    Code:
    windowsmgr.max_events_per_sec=250
    ♦ Opera Mobile Browser

    2. Faster internet speed

    ♦ Signal (3G) tweaks
    Code:
    ro.ril.hsxpa=2
    ro.ril.gprsclass=10
    ro.ril.hep=1
    ro.ril.enable.dtm=1
    ro.ril.hsdpa.category=10
    ro.ril.enable.a53=1
    ro.ril.enable.3g.prefix=1
    ro.ril.htcmaskw1.bitmask=4294967295
    ro.ril.htcmaskw1=14449
    ro.ril.hsupa.category=5
    ♦ Net speed tweaks
    Code:
    net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
    net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
    Alright, I think this is it for now.
    If you have any other tweaks or better values, you can PM me and I'll include them

    thanks to
    kenzo
    krabappel2548
    4
    great work, really really great work man! Especially that with the bootanimation! Has it taken much time to gather them all?

    you bet..
    of course a lot of time man:)
    1
    it would be helpfull know which improove and which deprove specific Rom.
    Im using JS 6.1 and for example i dont know if for example this random row:
    - wifi.supplicant_scan_interval=180
    could improove this rom or it has some better settings somehow
    guys this is for all roms man...plz press thanx
    1
    Is this work for Arc S with custom ROM,,,??? coz I saw the "htc" word on 3G tweak script

    Sent from my LT18 using xda premium
    dude
    its a command not really htc company lol....:D
    1
    hahaha..just wondering mate :eek:
    I'Ve been used this tweaks
    "ro.ril.hsxpa=2
    ro.ril.gprsclass=10
    ro.ril.hep=1
    ro.ril.enable.dtm=1
    ro.ril.hsdpa.category=10
    ro.ril.enable.a53=1
    ro.ril.enable.3g.prefix=1
    ro.ril.htcmaskw1.bitmask=4294967295
    ro.ril.htcmaskw1=14449
    ro.ril.hsupa.category=5"

    but without the two lines of "htcmaskw1.bitmask=...."
    so what the different ??
    :confused:

    Actually htcmaskw1 command sets the perbit mask tranfer means that when u r on ur data conncetion in no wifi u get the max speed by the value
    so the most optimized value has to be said there