On my ROMs adventure 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 fluctuate from device to device, I've found these pretty consistent throughout many.
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
2. Raise JPG quality to 100%
3. VM Heapsize; higher the RAM, higher the hp can be
4. Render UI with GPU
5. Decrease dialing out delay
6. Helps scrolling responsiveness
7. Save battery
8. Disable debugging notify icon on statusbar
9. Increase overall touch responsiveness
10. Raise photo and video recording quality
11. Signal (3G) tweaks
12. Net speed tweaks
13. Disable blackscreen issue after a call
14. Fix some application issues
15. Phone will not wake up from hitting the volume rocker
16. Force button lights on when screen is on
17. Disable boot animation for faster boot
18. Miscellaneous flags
19. Specifics to some LG devices
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
2. internet speed tweaks
3. vm management tweaks
4. misc kernel tweaks
5. battery tweaks
6. EXT4 tweaks (greatly increase I/O)
(needs /system, /cache, /data partitions formatted to EXT4)
a) removes journalism
b) perfect mount options
7. Flags blocks as non-rotational and increases cache size
8. microSD card speed tweak
9. Defrags database files
9. Remove logger
10. Ondemand governor tweaks
11. Auto change governor and I/O Scheduler
a) I/O Scheduler (Best: MTD devices - VR; EMMC devices - SIO) - needs kernel with these
b) Governor (Best: Minmax > SavagedZen > Smoothass > Smartass > Interactive) - needs kernel with these
12. Auto-zipalign on boot
(needs zipalign bin)
13. Loopy Smoothness tweak
14. Move dalvik-cache to cache partition (if it's big enough) to free up data partition space
15. Disable normalize sleeper
16. OOM groupings and priorities tweaks - SuperCharger
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)
b) SE supl for A-GPS (better than Nokia's or Google's)
Other tweaks or guidelines
1. Patch your hosts file for blocking Ads
(please think before doing this; many developers are supported through this way)
2. Use CyanogenMOD's APN list file - it's one of the most complete.
3. Use UOT kitchen for basic theming on your device.
4. Use Google's dns servers
5. Update Superuser and su binary to latest version (3.0 beta)
6. Disable sync feature in sqlite
(author: ownhere - needs a source for your device so you can compile the /system/lib/libsqlite.so)
7. Do not use task killers.
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.
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=48m
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=8000000
ro.media.enc.hprof.vid.bps=8000000
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 $SAMPLING_RATE > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
11. Auto change governor and I/O Scheduler
a) I/O Scheduler (Best: MTD devices - VR; EMMC devices - SIO) - needs kernel with these
Code:
echo "vr" > /sys/block/mmcblk0/queue/scheduler
or
echo "sio" > /sys/block/mmcblk0/queue/scheduler
b) Governor (Best: Minmax > SavagedZen > Smoothass > Smartass > Interactive) - needs kernel with these
Code:
echo "governor-name-here" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
12. Auto-zipalign on boot
(needs zipalign bin)
Code:
[url]http://xdaforums.com/showthread.php?t=860586[/url]
13. Loopy Smoothness tweak
Code:
[url]http://xdaforums.com/showthread.php?t=1137554[/url]
[url]http://xdaforums.com/showthread.php?t=1205744[/url]
14. Move dalvik-cache to cache partition (if it's big enough) to free up data partition space
Code:
CACHESIZE=$(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:
[url]http://xdaforums.com/showthread.php?t=991276[/url]
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://xdaforums.com/showthread.php?t=903507
7. Do not use task killers.
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.
Last edited: