Galaxy S II TweakLite

#!/system/bin/sh
#
# file: /system/etc/init.d/98S2TweakLite v1
# - adapted from "SSSwitch by voku1987 [voku(at)voku-online(dot)de] (Screen State Switch Lite)"
#


# =========
# One-time tweaks to apply on every boot;
# =========
MMC=`ls -d /sys/block/mmc*`;

# =========
# Remount all partitions
# =========
for j in $(busybox mount | cut -d " " -f3);
do
    sync;
    busybox mount -o remount,noatime,nodiratime $j;
done;

for k in $(busybox mount | grep relatime | cut -d " " -f3);
do
    sync;
    busybox mount -o remount,noatime,nodiratime $k;
done;

for l in $(busybox mount | grep ext3 | cut -d " " -f3);
do
    sync;
    busybox mount -o remount,noatime,nodiratime,commit=15 $l;
done;

for m in $(busybox mount | grep ext4 | cut -d " " -f3);
do
    sync;
    busybox mount -o remount,noatime,nodiratime,commit=15 $m;
done;

# =========
# Optimize io scheduler
# =========
for i in $MMC;
do
    if [ -e $i/queue/scheduler ];
    then
        /system/xbin/echo "bfq" > $i/queue/scheduler;
    fi;

    if [ -e $i/queue/iostats ];
    then
        /system/xbin/echo "0" > $i/queue/iostats;
    fi;

    if [ -e $i/queue/iosched/back_seek_penalty ];
    then
        /system/xbin/echo "1" > $i/queue/iosched/back_seek_penalty;
    fi;

    if [ -e $i/queue/iosched/slice_idle ];
    then
        /system/xbin/echo "0" > $i/queue/iosched/slice_idle;
    fi;

    if [ -e $i/queue/iosched/slice_async_rq ];
    then
        /system/xbin/echo "2" > $i/queue/iosched/slice_async_rq;
    fi;

    if [ -e $i/queue/read_ahead_kb ];
    then
        /system/xbin/echo "512" > $i/queue/read_ahead_kb;
    fi;

    if [ -e $i/queue/iosched/back_seek_max ];
    then
        /system/xbin/echo "1000000000" > $i/queue/iosched/back_seek_max;
    fi;

    if [ -e $i/queue/iosched/quantu ];
    then
        /system/xbin/echo "16" > $i/queue/iosched/quantum;
    fi;

    if [ -e $i/queue/nr_requests ];
    then
        /system/xbin/echo "2048" > $i/queue/nr_requests;
    fi;

    if [ -e $i/queue/iosched/group_isolation ];
    then
        /system/xbin/echo "0" > $i/queue/iosched/group_isolation;
    fi;
done;

# =========
# Optimize SQLite databases from apps
# =========
#
for i in `busybox find /data -iname "*.db"`;
do
  /system/xbin/sqlite3 $i 'VACUUM;';
  /system/xbin/sqlite3 $i 'REINDEX;';
done;

if [ -d "/dbdata" ]; then
    for i in `busybox find /dbdata -iname "*.db"`;
    do
        /system/xbin/sqlite3 $i 'VACUUM;';
        /system/xbin/sqlite3 $i 'REINDEX;';
    done;
fi;

if [ -d "/datadata" ]; then
    for i in `busybox find /datadata -iname "*.db"`;
    do
        /system/xbin/sqlite3 $i 'VACUUM;';
        /system/xbin/sqlite3 $i 'REINDEX;';
    done;
fi;

if [ -d "/sdcard" ]; then
    for i in `busybox find /sdcard -iname "*.db"`;
    do
        /system/xbin/sqlite3 $i 'VACUUM;';
        /system/xbin/sqlite3 $i 'REINDEX;';
    done;
fi;

# =========
# TWEAKS: for TCP read/write
# =========
/system/xbin/echo "0" > /proc/sys/net/ipv4/tcp_timestamps;
/system/xbin/echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse;
/system/xbin/echo "1" > /proc/sys/net/ipv4/tcp_sack;
/system/xbin/echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle;
/system/xbin/echo "1" > /proc/sys/net/ipv4/tcp_window_scaling;
/system/xbin/echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes;
/system/xbin/echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl;
/system/xbin/echo "30" > /proc/sys/net/ipv4/tcp_fin_timeout;
/system/xbin/echo "404480" > /proc/sys/net/core/wmem_max;
/system/xbin/echo "404480" > /proc/sys/net/core/rmem_max;
/system/xbin/echo "256960" > /proc/sys/net/core/rmem_default;
/system/xbin/echo "256960" > /proc/sys/net/core/wmem_default;
/system/xbin/echo "4096 16384 404480" > /proc/sys/net/ipv4/tcp_wmem;
/system/xbin/echo "4096 87380 404480" > /proc/sys/net/ipv4/tcp_rmem;
setprop net.tcp.buffersize.default 4096,87380,404480,4096,16384,404480;
setprop net.tcp.buffersize.wifi 4096,87380,404480,4096,16384,404480;
setprop net.tcp.buffersize.umts 4096,87380,404480,4096,16384,404480;

# =========
# TWEAKS: optimized for 3G/Edge speed
# =========
setprop ro.ril.hsxpa 2;
setprop ro.ril.gprsclass 12;
setprop ro.ril.hep 1;
setprop ro.ril.enable.dtm 1;
setprop ro.ril.hsdpa.category 8;
setprop ro.ril.enable.a53 1;
setprop ro.ril.enable.3g.prefix 1;
setprop ro.ril.htcmaskw1.bitmask 4294967295;
setprop ro.ril.htcmaskw1 14449;
setprop ro.ril.hsupa.category 5;

# =========
# TWEAKS
# =========
setprop ro.telephony.call_ring.delay 1000;
setprop wifi.supplicant_scan_interval 180;
setprop windowsmgr.max_events_per_sec 60;
setprop ro.media.dec.jpeg.memcap 20000000;
setprop ro.media.enc.jpeg.quality 95,85,75;
#setprop dalvik.vm.startheapsize 12m;
#setprop dalvik.vm.heapsize 32m;
#setprop debug.sf.hw 1;
/system/xbin/echo "8" > /proc/sys/vm/page-cluster;
/system/xbin/echo "1" /proc/sys/kernel/sched_compat_yield;
/system/xbin/echo "0" /proc/sys/kernel/sched_child_runs_first;
/system/xbin/echo "256000" /proc/sys/kernel/sched_shares_ratelimit;
/system/xbin/echo "64000" > /proc/sys/kernel/msgmni;
/system/xbin/echo "64000" > /proc/sys/kernel/msgmax;
/system/xbin/echo "10" > /proc/sys/fs/lease-break-time;
/system/xbin/echo "500 512000 64 2048" > /proc/sys/kernel/sem;
/system/xbin/echo "5000" > /proc/sys/kernel/threads-max;
/system/xbin/echo "0" > /proc/sys/vm/oom_kill_allocating_task;
/system/xbin/echo "0" > /proc/sys/vm/panic_on_oom;

# =========
# Battery-TWEAKS
# =========
mount -t debugfs none /sys/kernel/debug;
/system/xbin/echo "NO_NEW_FAIR_SLEEPERS" > /sys/kernel/debug/sched_features;
/system/xbin/echo "NO_NORMALIZED_SLEEPERS" > /sys/kernel/debug/sched_features;
umount /sys/kernel/debug;

# =========
# MEMORY-TWEAKS
# =========
/system/xbin/echo "50" > /proc/sys/vm/swappiness;
/system/xbin/echo "50" > /proc/sys/vm/vfs_cache_pressure;
/system/xbin/echo "4096" > /proc/sys/vm/min_free_kbytes;
/system/xbin/echo "500" > /proc/sys/vm/dirty_expire_centisecs;
/system/xbin/echo "3000" > /proc/sys/vm/dirty_writeback_centisecs;
/system/xbin/echo "22" > /proc/sys/vm/dirty_ratio;
/system/xbin/echo "4" > /proc/sys/vm/dirty_background_ratio;
/system/xbin/echo "3" > /proc/sys/vm/drop_caches;
/system/xbin/echo "1" > /proc/sys/vm/overcommit_memory;
/system/xbin/echo "8" > /proc/sys/vm/min_free_order_shift;
#/system/xbin/echo "0,1,2,4,6,15" > /sys/module/lowmemorykiller/parameters/adj;
/system/xbin/echo "0" > /sys/module/lowmemorykiller/parameters/debug_level;
/system/xbin/echo "64" > /sys/module/lowmemorykiller/parameters/cost;
# Define the memory thresholds at which the above process classes will
# be killed. These numbers are in pages (4k) -> (1 MB * 1024) / 4 = 256
FOREGROUND_APP_MEM=1536;
VISIBLE_APP_MEM=2048;
SECONDARY_SERVER_MEM=4096;
BACKUP_APP_MEM=4096;
HOME_APP_MEM=4096;
HIDDEN_APP_MEM=5120;
CONTENT_PROVIDER_MEM=15360;
EMPTY_APP_MEM=23040;
#/system/xbin/echo "$FOREGROUND_APP_MEM,$VISIBLE_APP_MEM,$SECONDARY_SERVER_MEM,$HIDDEN_APP_MEM,$CONTENT_PROVIDER_MEM,$EMPTY_APP_MEM" > /sys/module/lowmemorykiller/parameters/minfree;

# =========
# Firewall-TWEAKS
# =========

#ping/icmp protection
/system/xbin/echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts;
/system/xbin/echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all;
/system/xbin/echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses;

if [ -e /proc/sys/net/ipv6/icmp_echo_ignore_broadcasts ];
then
    /system/xbin/echo "1" > /proc/sys/net/ipv6/icmp_echo_ignore_broadcasts;
fi

if [ -e /proc/sys/net/ipv6/icmp_echo_ignore_all ];
then
    /system/xbin/echo "1" > /proc/sys/net/ipv6/icmp_echo_ignore_all;
fi

if [ -e /proc/sys/net/ipv6/icmp_ignore_bogus_error_responses ];
then
    /system/xbin/echo "1" > /proc/sys/net/ipv6/icmp_ignore_bogus_error_responses;
fi

#syn protection
/system/xbin/echo "2" > /proc/sys/net/ipv4/tcp_synack_retries;

if [ -e /proc/sys/net/ipv6/tcp_synack_retries ];
then
    /system/xbin/echo "2" > /proc/sys/net/ipv6/tcp_synack_retries;
fi

if [ -e /proc/sys/net/ipv6/tcp_syncookies ];
then
    /system/xbin/echo "0" > /proc/sys/net/ipv6/tcp_syncookies;
fi

if [ -e /proc/sys/net/ipv4/tcp_syncookies ];
then
    /system/xbin/echo "1" > /proc/sys/net/ipv4/tcp_syncookies;
fi

#drop spoof, redirects, etc
/system/xbin/echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter;
/system/xbin/echo "1" > /proc/sys/net/ipv4/conf/default/rp_filter;
/system/xbin/echo "0" > /proc/sys/net/ipv4/conf/all/send_redirects;
/system/xbin/echo "0" > /proc/sys/net/ipv4/conf/default/send_redirects;
/system/xbin/echo "0" > /proc/sys/net/ipv4/conf/default/accept_redirects;
/system/xbin/echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route;
/system/xbin/echo "0" > /proc/sys/net/ipv4/conf/default/accept_source_route;

if [ -e /proc/sys/net/ipv6/conf/all/rp_filter ];
then
    /system/xbin/echo "1" > /proc/sys/net/ipv6/conf/all/rp_filter;
fi

if [ -e /proc/sys/net/ipv6/conf/default/rp_filter ];
then
    /system/xbin/echo "1" > /proc/sys/net/ipv6/conf/default/rp_filter;
fi

if [ -e /proc/sys/net/ipv6/conf/all/send_redirects ];
then
    /system/xbin/echo "0" > /proc/sys/net/ipv6/conf/all/send_redirects;
fi

if [ -e /proc/sys/net/ipv6/conf/default/send_redirects ];
then
    /system/xbin/echo "0" > /proc/sys/net/ipv6/conf/default/send_redirects;
fi

if [ -e /proc/sys/net/ipv6/conf/default/accept_redirects ];
then
    /system/xbin/echo "0" > /proc/sys/net/ipv6/conf/default/accept_redirects;
fi

if [ -e /proc/sys/net/ipv6/conf/all/accept_source_route ];
then
    /system/xbin/echo "0" > /proc/sys/net/ipv6/conf/all/accept_source_route;
fi

if [ -e /proc/sys/net/ipv6/conf/default/accept_source_route ];
then
    /system/xbin/echo "0" > /proc/sys/net/ipv6/conf/default/accept_source_route;
fi

# =========
# CleanUp
# =========

#drop caches to free some memory
sync;
/system/xbin/echo "3" > /proc/sys/vm/drop_caches;
sleep 1;
/system/xbin/echo "1" > /proc/sys/vm/drop_caches;


log -p i -t Tweak_Lite_v1 "*** BOOT tweaks ***: applied miscellaneous performance tweaks";