[KERNEL] [P6800 JB 4.1.2] [22 Mar] ROOT | ExTweaks | exFAT | SkyHigh Kernel [5.0.0 FINAL]
** FOR P6800 (GSM/3G) device running JB 4.1.2 DXMD3 ONLY !! **
I am UpInTheAir part time kernel dev (hack) and Chef of SGT 7.7 JB & ICS ROMs, and now bring to you my P6800 Jellybean SkyHigh Kernel.
-- STABLE FINAL RELEASE --
* I don't pretend to know everything, so if you can be constructive and help out this project, please do so. You will find allot of answers by searching gitHub, XDA and SEARCH
FEATURES
* Based on official Samsung source JB DXMD3
* AUTO ROOT (only if you don't already have it)
* STABLE - under SkyHigh "default" values & conditions
* ExTweaks app support for almost all kernel configurations + more !!
Many descriptions are in the app ! If you require more info, don't be lazy, please SEARCH like I did !
* SkyHigh default CPU min/max 200 > 1400 MHz (13-step)
* 18-step CPU 100 > 1800 MHz (Recommend setting 200-1400/1600 MHz)
* No UV for stock frequencies 200-500-800-1000-1200-1400 MHz
* 4-step GPU : Default = 160-200-267-400 MHz
* GPU UV / UC / OC
* GPU Control
GPU BENCHMARK BEFORE (3DMark app)
GPU BENCHMARK AFTER @ 400 MHz (3DMark app)
* GPU VPLL mode optional
* Busfreq up & down threshold control
* Busfreq (memory) voltage group
* Set L2 bus (memory) speed from 133 > 160 MHz
* Adaptive vfs_cache_pressure on suspend / resume
* Governors
* IO schedulers
* SOUND CONTROL via ExTweaks app
* Thunderbolt scheduler IO Tweaks [pikachu01]
* Implemented kernel to report USB trickle charge (previously just reports discharging).
* Force USB charging source to be detected as AC
* Auto set init.d scripts to 777 – no need to manually set script permissions, just drop in & reboot
* Reduced GUI lag
* Improved touch-screen sensitivity (on both battery and charge)
* Mount partitions NOATIME and NODIRATIME by default
* R/W and auto-mounting of exFAT USB-OTG & external sdcard using official Samsung Open Source modules v1.2.5
* modded ROM /system/etc/vold.fstab to permit exFAT mounting
* NTFS R/W OTG file system support (require app to mount)
* UDF/ISO file system support - BluRay (require app to mount) - not tested !
* Network filesystem support
* TCP algorithms
* In-built zRAM support
* LZ4 compression implemented & enabled for zRAM [psndna88 & Yank555.lu]
* Support paging of anonymous memory (Swap)
* General optimized for size
* Kernel compression = xz
* Support for iPad, iPhone, iPhone_3G/S, iPhone_4/4S, iPhone_5 (not tested as I don't own "rotten fruit" )
* UV motor -100 mV (3.1V → 3.0V)
* UV LED -100 mV (3.2V → 3.1V)
* fbearlysuspend control - allow CRT-off animation in SUPPORTED ROMs)
* Thermal throttle control (default on) – be careful here, do you want to melt your CPU?
* Dynamic read-ahead implemented and set at 1024 KB (variable)
* Int/External sdcard read ahead cache = variable KB
* Internal & external sdcard IO schedulers = SIO
* Dynamic FSync control v1.2 implemented and enabled
* Dynamic management of dirty page writebacks
* Android Logger Control disabled
* Linux printk Control disabled
* KSM support
* Custom bootanimation support
* Custom boot sound support
* Support for XPAD gamepad & rumblepad controller
* Reduce Android logger RAM usage
* Disabled kernel debugging to reduce zImage size
* Disabled some module logging
* Disable mali tracking debug
* Disable zRAM debug
* Triangle Away app support
* vm swappiness = 20 (performance)
* Free pagecache. dentries and inodes will be managed by /proc/sys/vm/vfs_cache_pressure
* System property accessory tweak values from V6SuperCharger
* Virtual memory & kernel tweak
* Misc tweaks for battery life
* TCP Speed & Security
* Power saving tweaks
pm.sleep_mode 1
ro.ril.disable.power.collapse 1
wifi.supplicant_scan_interval 180
CREDITS
GPL COMPLIANT - SOURCE: >> GitHub
.
** FOR P6800 (GSM/3G) device running JB 4.1.2 DXMD3 ONLY !! **
I am UpInTheAir part time kernel dev (hack) and Chef of SGT 7.7 JB & ICS ROMs, and now bring to you my P6800 Jellybean SkyHigh Kernel.
-- STABLE FINAL RELEASE --
* I don't pretend to know everything, so if you can be constructive and help out this project, please do so. You will find allot of answers by searching gitHub, XDA and SEARCH
FEATURES
* Based on official Samsung source JB DXMD3
* AUTO ROOT (only if you don't already have it)
insecure kernel
su binary 1.91
SuperSU 1.91
busyBox 1.20.2 linusyang installed to system/sbin
su binary 1.91
SuperSU 1.91
busyBox 1.20.2 linusyang installed to system/sbin
* STABLE - under SkyHigh "default" values & conditions
* ExTweaks app support for almost all kernel configurations + more !!
Many descriptions are in the app ! If you require more info, don't be lazy, please SEARCH like I did !
CPU
CPU VOLTAGE
CPU TUNING (Awake & Sleep)
BUS
IO Tuning
MEMORY TUNING
GPU CONTROL
DISPLAY
SOUND
TWEAKS
- CortexBrain-Background-Process control
- Check CortexBrain-Background-Process Service
OTHER
- Cron Task Control
- Test Cron task service
- Cron reset
FILE SYSTEM MAINTENANCE / REPAIR
INIT.D SUPPORT
USB MASS STORAGE (UMS) MODE
WIFI & GPS
ROOT
MODULES
PROFILES
BACKUP & RESTORE
RE-BOOT
BUG-REPORT
INFO
- Boot boost CPU freq
- Boost CPU freq (not fully tested)
- Cortex wakeup boost (not fully tested)
- Max normal freq
- CPU freq OC / UC
- CFS settings – Arch power
- CPU idle mode (sleep & awake)
- Scaling max suspend freq
- Scaling min suspend freq
- Scaling min standby freq
- CPU temp throttle
CPU VOLTAGE
- Set voltage individually for each 18-step freq
CPU TUNING (Awake & Sleep)
- Set default CPU governor
- Set governor configuration
- Enable/disable hotplug
BUS
- Bus voltage group
- Thresholds
IO Tuning
- Int/ext sdcard read-ahead cache
- Dynamic Fsync control
- Dynamic dirty page writeback control
- IO scheduler (awake & sleep)
MEMORY TUNING
- OOM control (screen on/off)
- Dirty background ratio
- Dirty ratio
- Clean RAM cache
- zRAM
- Swappiness
- zRAM stats
- KSM control
GPU CONTROL
- VPLL/MPLL mode
- Freq control
- Voltage control
- Threshold control
- Stay-count control
DISPLAY
- FB early suspend delay (CRT TV off animation for SUPPORTED ROM)
- Touch screen sensitivity
SOUND
- Master volume gain
- Headphone
- Mic
- Speaker
TWEAKS
- CortexBrain-Background-Process control
- Check CortexBrain-Background-Process Service
- TCP security
- TCP speed
- TCP RAM
- IPV6 (enabled by default - does not actually switch off)
- CPU
- Memory
- System
- Kernel
- IO
OTHER
- Cron Task Control
- Test Cron task service
- Cron reset
- Clean RAM cache task every hour
- Update AD blocker task every week
- DB optimizing (sqlite3) task every day
- Clean app cache task every day
- Zipalign task every day
- fstrim lagfix task every day
- Cron test task jobs
- Zipalign apps now
- Zipalign on boot
- DB optimization (sqlite3) now
- DB optimization (sqlite3) on boot
- Battery scaling calibration (fuel-gauge reset) now
- Ad blocker update now
- Remove Ad blocker
FILE SYSTEM MAINTENANCE / REPAIR
- Partitions scan
- Data FS repair on boot
- extSdCard repair on boot
- Fix permissions on boot
- Fix permissions now
- Trim FS partitions (fstrim lagfix) on boot
- Trim FS partitions (fstrim lagfix) now
INIT.D SUPPORT
- Enable init.d script run control
USB MASS STORAGE (UMS) MODE
- MTP <> Mass storage mode
WIFI & GPS
- Clean WIFI lease
- TCP congestion control
- GPS region
- GPS zone check
- Update time
ROOT
- Install root now
- Remove root now
- Root check
- Auto install root on boot
MODULES
- Frandom control
- XPAD control
- ISO CD-ROM control
- UDF CD-ROM/DVD control
PROFILES
- Profile check
- UpInTheAir & SkyHigh Default (you can configure & save values for each, but not change the actual profile name)
BACKUP & RESTORE
- Backup User settings now
- Restore User settings now
RE-BOOT
- Re-boot into Recovery
BUG-REPORT
- Kernel bug-report
- App bug-report
- Android logger control
- Kernel printk control
- Module logger control
INFO
* SkyHigh default CPU min/max 200 > 1400 MHz (13-step)
* 18-step CPU 100 > 1800 MHz (Recommend setting 200-1400/1600 MHz)
Default = 13-step 200 > 1400 MHz
Stock = 6-step 200 > 1400 MHz
Stock = 6-step 200 > 1400 MHz
* No UV for stock frequencies 200-500-800-1000-1200-1400 MHz
* 4-step GPU : Default = 160-200-267-400 MHz
MPLL mode = 4-step GPU (default)
Stock = 2-step GPU (160-267 MHz)
Min freq = 50 MHz
Max MPLL freq = 400 MHz
Max VPLL freq = 520 MHz
Voltage = 800 > 1200 mV (+/- 50 mV increments)
Stock = 2-step GPU (160-267 MHz)
Min freq = 50 MHz
Max MPLL freq = 400 MHz
Max VPLL freq = 520 MHz
Voltage = 800 > 1200 mV (+/- 50 mV increments)
* GPU UV / UC / OC
160 MHz = 950 mV (-50 mV > stock 1000 mV)
200 MHz = 1000 mv
267 MHz = 1050 mV (-50 mV > stock 1100 mV)
400 MHz = 1100 mV
200 MHz = 1000 mv
267 MHz = 1050 mV (-50 mV > stock 1100 mV)
400 MHz = 1100 mV
* GPU Control
freq clock
voltage
step thresholds
stay counts
voltage
step thresholds
stay counts
GPU BENCHMARK BEFORE (3DMark app)
GPU BENCHMARK AFTER @ 400 MHz (3DMark app)
* GPU VPLL mode optional
For devices that can't handle VPLL – use MPLL mode instead
http://xdaforums.com/showpost.php?p=33720501&postcount=4181&nocache=1&z=1048045007703282
http://xdaforums.com/showpost.php?p=33720501&postcount=4181&nocache=1&z=1048045007703282
* Busfreq up & down threshold control
Stock / SkyHigh default = 23
* Busfreq (memory) voltage group
default group = 1 (stock)
available group options 1 > 7
L0 = 400 L1 = 267 L2 = 160 MHz
1 > {1150000, 1050000, 1050000} SkyHigh default / stock
2 > {1125000, 1025000, 1025000}
3 > {1100000, 1000000, 1000000}
4 > {1075000, 975000, 975000}
5 > {1050000, 950000, 950000}
6 > {1025000, 950000, 925000}
7 > {1000000, 925000, 900000}
available group options 1 > 7
L0 = 400 L1 = 267 L2 = 160 MHz
1 > {1150000, 1050000, 1050000} SkyHigh default / stock
2 > {1125000, 1025000, 1025000}
3 > {1100000, 1000000, 1000000}
4 > {1075000, 975000, 975000}
5 > {1050000, 950000, 950000}
6 > {1025000, 950000, 925000}
7 > {1000000, 925000, 900000}
* Set L2 bus (memory) speed from 133 > 160 MHz
- Default MHz now:
L0 = 400
L1 = 267
L2 = 160 MHz / 1000 mV (stock = 133 MHz / 950 mV)
L0 = 400
L1 = 267
L2 = 160 MHz / 1000 mV (stock = 133 MHz / 950 mV)
* Adaptive vfs_cache_pressure on suspend / resume
Hard coded values :
- Set @ 10 = save battery on device suspend
- Set @ 60 = better smoothness on device resume
Low vfs_cache pressure values save battery while idle, while a low value also causes stutter with longer up times.
- Set @ 10 = save battery on device suspend
- Set @ 60 = better smoothness on device resume
Low vfs_cache pressure values save battery while idle, while a low value also causes stutter with longer up times.
* Governors
pegasusq = SkyHigh default (siyah kernel version & "freq for responsiveness" tweaked to 500 MHz by me)
HYPER
scary
wheatley
abyssplug
lulzactiveq (siyah kernel version & tweaked by me)
lazy
hotplug
ondemand
performance
ZZMoove 0.7d
HYPER
scary
wheatley
abyssplug
lulzactiveq (siyah kernel version & tweaked by me)
lazy
hotplug
ondemand
performance
ZZMoove 0.7d
* IO schedulers
SIO = SkyHigh default
ROW
VR
NOOP
Deadline
CFQ
ROW
VR
NOOP
Deadline
CFQ
* SOUND CONTROL via ExTweaks app
* Thunderbolt scheduler IO Tweaks [pikachu01]
* Implemented kernel to report USB trickle charge (previously just reports discharging).
- Those devices without modified SystemUI.apk will now show battery charging animation whilst on USB power source
* Force USB charging source to be detected as AC
- faster USB charge using same circuitry
- limited by:
- limited by:
1. charging source max output
2. kernel - up to max 1500 mA (same is actual AC)
2. kernel - up to max 1500 mA (same is actual AC)
* Auto set init.d scripts to 777 – no need to manually set script permissions, just drop in & reboot
* Reduced GUI lag
- Frandom
- fstrim lagfix - NOT ENABLED BY DEFAULT
- Disabled gentle fair sleepers
- RAM management OOM adj & minfree values from V6SuperCharger
- fstrim lagfix - NOT ENABLED BY DEFAULT
- Disabled gentle fair sleepers
- RAM management OOM adj & minfree values from V6SuperCharger
* Improved touch-screen sensitivity (on both battery and charge)
* Mount partitions NOATIME and NODIRATIME by default
* R/W and auto-mounting of exFAT USB-OTG & external sdcard using official Samsung Open Source modules v1.2.5
* modded ROM /system/etc/vold.fstab to permit exFAT mounting
* NTFS R/W OTG file system support (require app to mount)
* UDF/ISO file system support - BluRay (require app to mount) - not tested !
* Network filesystem support
In-built CIFS
In-built NFS (not tested)
In-built NFS (not tested)
* TCP algorithms
- cubic = default
- reno
- westwood+ (some users of other devices have reported faster network throughput speeds)
- reno
- westwood+ (some users of other devices have reported faster network throughput speeds)
* In-built zRAM support
* LZ4 compression implemented & enabled for zRAM [psndna88 & Yank555.lu]
* Support paging of anonymous memory (Swap)
* General optimized for size
* Kernel compression = xz
* Support for iPad, iPhone, iPhone_3G/S, iPhone_4/4S, iPhone_5 (not tested as I don't own "rotten fruit" )
* UV motor -100 mV (3.1V → 3.0V)
* UV LED -100 mV (3.2V → 3.1V)
* fbearlysuspend control - allow CRT-off animation in SUPPORTED ROMs)
* Thermal throttle control (default on) – be careful here, do you want to melt your CPU?
* Dynamic read-ahead implemented and set at 1024 KB (variable)
* Int/External sdcard read ahead cache = variable KB
* Internal & external sdcard IO schedulers = SIO
* Dynamic FSync control v1.2 implemented and enabled
* Dynamic management of dirty page writebacks
* Android Logger Control disabled
* Linux printk Control disabled
* KSM support
* Custom bootanimation support
* Custom boot sound support
* Support for XPAD gamepad & rumblepad controller
* Reduce Android logger RAM usage
* Disabled kernel debugging to reduce zImage size
* Disabled some module logging
* Disable mali tracking debug
* Disable zRAM debug
* Triangle Away app support
* vm swappiness = 20 (performance)
* Free pagecache. dentries and inodes will be managed by /proc/sys/vm/vfs_cache_pressure
echo "1" > /proc/sys/vm/drop_caches
* System property accessory tweak values from V6SuperCharger
dalvik.vm.heapgrowthlimit 130m
dalvik.vm.heapsize 130m
persist.sys.purgeable_assets 1
windowsmgr.max_events_per_sec90 (200 set as SkyHigh default)
dalvik.vm.heapsize 130m
persist.sys.purgeable_assets 1
windowsmgr.max_events_per_sec
* Virtual memory & kernel tweak
# values from V6SuperCharger & Kick Ass Kernelizer [zeppelinrox@XDA]
echo "10" > /proc/sys/fs/lease-break-time
echo "0" > /proc/sys/kernel/panic
echo "0" > /proc/sys/kernel/panic_on_oops
echo "0" > /proc/sys/vm/block_dump
echo "60" > /proc/sys/vm/dirty_background_ratio
echo "95" > /proc/sys/vm/dirty_ratio
echo "0" > /proc/sys/vm/laptop_mode
echo "15360" > /proc/sys/vm/min_free_kbytes
echo "4" > /proc/sys/vm/min_free_order_shift
echo "0" > /proc/sys/vm/oom_dump_tasks
echo "0" > /proc/sys/vm/oom_kill_allocating_task
echo "1" > /proc/sys/vm/overcommit_memory
echo "0" > /proc/sys/vm/panic_on_oom
#echo "20" > /proc/sys/vm/swappiness ########### Already implemented
#echo "10" > /proc/sys/vm/vfs_cache_pressure ########### Implemented adaptive vfs_cache_pressure on suspend (10) / resume (60)
echo "10" > /proc/sys/fs/lease-break-time
echo "0" > /proc/sys/kernel/panic
echo "0" > /proc/sys/kernel/panic_on_oops
echo "0" > /proc/sys/vm/block_dump
echo "60" > /proc/sys/vm/dirty_background_ratio
echo "95" > /proc/sys/vm/dirty_ratio
echo "0" > /proc/sys/vm/laptop_mode
echo "15360" > /proc/sys/vm/min_free_kbytes
echo "4" > /proc/sys/vm/min_free_order_shift
echo "0" > /proc/sys/vm/oom_dump_tasks
echo "0" > /proc/sys/vm/oom_kill_allocating_task
echo "1" > /proc/sys/vm/overcommit_memory
echo "0" > /proc/sys/vm/panic_on_oom
#echo "20" > /proc/sys/vm/swappiness ########### Already implemented
#echo "10" > /proc/sys/vm/vfs_cache_pressure ########### Implemented adaptive vfs_cache_pressure on suspend (10) / resume (60)
* Misc tweaks for battery life
# values from V6SuperCharger & Kick Ass Kernelizer [zeppelinrox@XDA]
echo "65536" > /proc/sys/kernel/msgmax
echo "2048" > /proc/sys/kernel/msgmni
echo "500 512000 64 2048" > /proc/sys/kernel/sem
echo "2097152" > /proc/sys/kernel/shmall
echo "268435456" > /proc/sys/kernel/shmmax
echo "4096" > /proc/sys/kernel/shmmni
#
echo "524288" > /proc/sys/fs/file-max
echo "32000" > /proc/sys/fs/inotify/max_queued_events
echo "256" > /proc/sys/fs/inotify/max_user_instances
echo "10240" > /proc/sys/fs/inotify/max_user_watches
echo "0" > /proc/sys/kernel/sched_child_runs_first
echo "524288" > /proc/sys/kernel/threads-max
echo "65536" > /proc/sys/kernel/msgmax
echo "2048" > /proc/sys/kernel/msgmni
echo "500 512000 64 2048" > /proc/sys/kernel/sem
echo "2097152" > /proc/sys/kernel/shmall
echo "268435456" > /proc/sys/kernel/shmmax
echo "4096" > /proc/sys/kernel/shmmni
#
echo "524288" > /proc/sys/fs/file-max
echo "32000" > /proc/sys/fs/inotify/max_queued_events
echo "256" > /proc/sys/fs/inotify/max_user_instances
echo "10240" > /proc/sys/fs/inotify/max_user_watches
echo "0" > /proc/sys/kernel/sched_child_runs_first
echo "524288" > /proc/sys/kernel/threads-max
* TCP Speed & Security
# values from V6SuperCharger & Kick Ass Kernelizer [zeppelinrox@XDA]
# 3G TurboCharger Enhancement
#
# Google's public DNS settings
#
/system/bin/setprop net.dns1 8.8.8.8 ########### Not sticking
/system/bin/setprop net.dns2 8.8.4.4
#
# ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax
/system/bin/setprop net.tcp.buffersize.default 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.wifi 262144,524288,1048576,262144,524288,1048576
/system/bin/setprop net.tcp.buffersize.lte 262144,524288,3145728,262144,524288,3145728
/system/bin/setprop net.tcp.buffersize.hsdpa 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.evdo_b 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.umts 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.hspa 6144,87380,262144,6144,16384,262144
/system/bin/setprop net.tcp.buffersize.gprs 6144,8760,11680,6144,8760,11680
/system/bin/setprop net.tcp.buffersize.edge 6144,26280,35040,6144,16384,35040
#
# Queue size modifications
echo "20480" > /proc/sys/net/core/optmem_max
#echo "262144" > /proc/sys/net/core/rmem_default
echo "1048576" > /proc/sys/net/core/rmem_max
#echo "262144" > /proc/sys/net/core/wmem_default
echo "1048576" > /proc/sys/net/core/wmem_max
echo "50" > /proc/sys/net/unix/max_dgram_qlen
#
# Be sure that autotuning is in effect
echo "1" > /proc/sys/net/ipv4/tcp_moderate_rcvbuf
#
echo "0" > /proc/sys/net/ipv4/ip_no_pmtu_disc
echo "1" > /proc/sys/net/ipv4/route/flush
echo "0" > /proc/sys/net/ipv4/tcp_ecn
echo "1" > /proc/sys/net/ipv4/tcp_fack
echo "1" > /proc/sys/net/ipv4/tcp_rfc1337
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_rmem ########### Not sticking
echo "1" > /proc/sys/net/ipv4/tcp_sack
echo "0" > /proc/sys/net/ipv4/tcp_timestamps
echo "1" > /proc/sys/net/ipv4/tcp_window_scaling
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_wmem ########### Not sticking
echo "6144" > /proc/sys/net/ipv4/udp_rmem_min
echo "6144" > /proc/sys/net/ipv4/udp_wmem_min
#
# Re-use sockets in time-wait state
echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse
#
# Hardening the TCP/IP stack to SYN attacks
echo "1024" > /proc/sys/net/ipv4/tcp_max_syn_backlog
echo "2" > /proc/sys/net/ipv4/tcp_syn_retries
echo "2" > /proc/sys/net/ipv4/tcp_synack_retries
#
# Bump up tw_buckets in case we get DoS'd
echo "16384" > /proc/sys/net/ipv4/tcp_max_tw_buckets
#
# Ignore pings
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all
#
# Don't reply to broadcasts (prevents joining a smurf attack)
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
#
# Enable bad error message protection (should be enabled by default)
echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
#
# Don't cache connection metrics from previous connection
echo "1" > /proc/sys/net/ipv4/tcp_no_metrics_save
#
echo "15" > /proc/sys/net/ipv4/tcp_fin_timeout
echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl
echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes
echo "1800" > /proc/sys/net/ipv4/tcp_keepalive_time
#
# Don't pass traffic between networks or act as a router
# Disable IP Packet forwarding (should be disabled already)
echo "0" > /proc/sys/net/ipv4/ip_forward
#
echo "0" > /proc/sys/net/ipv4/conf/all/send_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/send_redirects
#
# Enable spoofing protection (turn on reverse packet filtering)
echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter
echo "1" > /proc/sys/net/ipv4/conf/default/rp_filter
#
# Don't accept source routing
echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route
echo "0" > /proc/sys/net/ipv4/conf/default/accept_source_route
#
# Don't accept redirects
echo "0" > /proc/sys/net/ipv4/conf/all/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/all/secure_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/secure_redirects
# 3G TurboCharger Enhancement
#
# Google's public DNS settings
#
/system/bin/setprop net.dns1 8.8.8.8 ########### Not sticking
/system/bin/setprop net.dns2 8.8.4.4
#
# ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax
/system/bin/setprop net.tcp.buffersize.default 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.wifi 262144,524288,1048576,262144,524288,1048576
/system/bin/setprop net.tcp.buffersize.lte 262144,524288,3145728,262144,524288,3145728
/system/bin/setprop net.tcp.buffersize.hsdpa 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.evdo_b 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.umts 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.hspa 6144,87380,262144,6144,16384,262144
/system/bin/setprop net.tcp.buffersize.gprs 6144,8760,11680,6144,8760,11680
/system/bin/setprop net.tcp.buffersize.edge 6144,26280,35040,6144,16384,35040
#
# Queue size modifications
echo "20480" > /proc/sys/net/core/optmem_max
#echo "262144" > /proc/sys/net/core/rmem_default
echo "1048576" > /proc/sys/net/core/rmem_max
#echo "262144" > /proc/sys/net/core/wmem_default
echo "1048576" > /proc/sys/net/core/wmem_max
echo "50" > /proc/sys/net/unix/max_dgram_qlen
#
# Be sure that autotuning is in effect
echo "1" > /proc/sys/net/ipv4/tcp_moderate_rcvbuf
#
echo "0" > /proc/sys/net/ipv4/ip_no_pmtu_disc
echo "1" > /proc/sys/net/ipv4/route/flush
echo "0" > /proc/sys/net/ipv4/tcp_ecn
echo "1" > /proc/sys/net/ipv4/tcp_fack
echo "1" > /proc/sys/net/ipv4/tcp_rfc1337
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_rmem ########### Not sticking
echo "1" > /proc/sys/net/ipv4/tcp_sack
echo "0" > /proc/sys/net/ipv4/tcp_timestamps
echo "1" > /proc/sys/net/ipv4/tcp_window_scaling
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_wmem ########### Not sticking
echo "6144" > /proc/sys/net/ipv4/udp_rmem_min
echo "6144" > /proc/sys/net/ipv4/udp_wmem_min
#
# Re-use sockets in time-wait state
echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse
#
# Hardening the TCP/IP stack to SYN attacks
echo "1024" > /proc/sys/net/ipv4/tcp_max_syn_backlog
echo "2" > /proc/sys/net/ipv4/tcp_syn_retries
echo "2" > /proc/sys/net/ipv4/tcp_synack_retries
#
# Bump up tw_buckets in case we get DoS'd
echo "16384" > /proc/sys/net/ipv4/tcp_max_tw_buckets
#
# Ignore pings
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all
#
# Don't reply to broadcasts (prevents joining a smurf attack)
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
#
# Enable bad error message protection (should be enabled by default)
echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
#
# Don't cache connection metrics from previous connection
echo "1" > /proc/sys/net/ipv4/tcp_no_metrics_save
#
echo "15" > /proc/sys/net/ipv4/tcp_fin_timeout
echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl
echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes
echo "1800" > /proc/sys/net/ipv4/tcp_keepalive_time
#
# Don't pass traffic between networks or act as a router
# Disable IP Packet forwarding (should be disabled already)
echo "0" > /proc/sys/net/ipv4/ip_forward
#
echo "0" > /proc/sys/net/ipv4/conf/all/send_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/send_redirects
#
# Enable spoofing protection (turn on reverse packet filtering)
echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter
echo "1" > /proc/sys/net/ipv4/conf/default/rp_filter
#
# Don't accept source routing
echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route
echo "0" > /proc/sys/net/ipv4/conf/default/accept_source_route
#
# Don't accept redirects
echo "0" > /proc/sys/net/ipv4/conf/all/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/all/secure_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/secure_redirects
* Power saving tweaks
ro.ril.disable.power.collapse 1
wifi.supplicant_scan_interval 180
CREDITS
* My family !!
* Samsung
* XDA
* wanam repo, ezykernel ICS diff, Ryuinferno, CM, boeffla, GM, redpill more to add yet
* Chainfire for root
* GM - siyah kernel
* AndreiLux
* dorimanx
* Christopher83
* zeppelinrox - V6SuperCharger - KAK - 3G TurboCharger values and Fix Emissions script
* idcrisis for permission to implement CrossBreeder entropy into kernel - no success as yet...
* pikachu01 FOR SOME tHUNDERBOLT TWEAKS
* Suxsem for fstrim
* XDA devs that I cherry pick code, values & ideas from. The list is never ending...
* edan1979 for excellent feedback & also nutley for volunteering to test
* Samsung
* XDA
* wanam repo, ezykernel ICS diff, Ryuinferno, CM, boeffla, GM, redpill more to add yet
* Chainfire for root
* GM - siyah kernel
* AndreiLux
* dorimanx
* Christopher83
* zeppelinrox - V6SuperCharger - KAK - 3G TurboCharger values and Fix Emissions script
* idcrisis for permission to implement CrossBreeder entropy into kernel - no success as yet...
* pikachu01 FOR SOME tHUNDERBOLT TWEAKS
* Suxsem for fstrim
* XDA devs that I cherry pick code, values & ideas from. The list is never ending...
* edan1979 for excellent feedback & also nutley for volunteering to test
GPL COMPLIANT - SOURCE: >> GitHub
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