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>Smoothothass>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.p...ostformat=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


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 = 256,960;
sysctl -w net.core.wmem_default = 256,960;

############################
# 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;

# Do not accept source routing
sysctl -w net.ipv4.conf.default.accept_source_route = 0;
sysctl -w net.ipv4.conf.all.accept_source_route = 0;

# Do not 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