VidOn Box Tweaks

# scaling governor switch, enable all cpus and change freq to 1.2Ghz (instead of 1.08Ghz)
#!/system/bin/sh
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 1 > /sys/devices/system/cpu/cpu0/online
echo 1 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu2/online
echo 1 > /sys/devices/system/cpu/cpu3/online
echo 1200000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

#script to renice processes to give the UI/IO one a higher priority (negative is higher than positive)
# while giving some processes a lower priority
(while :
do
   # surfaceflinger
   PID=`pgrep -f "surfaceflinger"`
   busybox renice -17 -p ${PID}

   # google process
   PID=`pgrep -f "com.google.process.location"`
   busybox renice 19 -p ${PID}
   PID=`pgrep -f "com.google.android.gms"`
   busybox renice 8 -p ${PID}

   # pvr (powervr gpu)
   PID=`pgrep -f "pvr"`
   busybox renice -20 -p ${PID}

   # mmcqd (file io)
   PID=`pgrep -f "mmcqd"`
   busybox renice 16 -p ${PID}

   # others
   PID=`pgrep -f "schw"`
   busybox renice -18 -p ${PID}

   PID=`pgrep -f "ueventd"`
   busybox renice -18 -p ${PID}

   sleep 180
done) &


# script to change the framebufer to 1080p/60
#!/system/bin/sh
fbset -fb /dev/graphics/fb0 -g 1920 1080 1920 2160 32 -t 6734 148 88 36 4 44 5 -hsync high
echo 'U:1920x1080p-60' > /sys/devices/platform/disp/graphics/fb0/mode


#script to change kernel/net parameters (note: I disabled ipv6 since I don't use it)
#!/system/bin/sh
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 net.core.optmem_max=20480;
sysctl -w net.unix.max_dgram_qlen=50;
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;
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;
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;
sysctl -w net.ipv4.conf.default.accept_source_route=0 ;
sysctl -w net.ipv4.conf.all.accept_source_route=0;
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;
sysctl -w net.ipv6.conf.all.disable_ipv6=1;
sysctl -w net.ipv6.conf.default.disable_ipv6=1;
sysctl -w net.ipv6.conf.lo.disable_ipv6=1;

# script I found on the net (XDA forum) to clear the memory cache
#!/system/bin/sh
# Adrenaline Boost V3
# Brought To You By Imbawind@XDA Developers
clear
echo "=======================";
echo "= Adrenaline Boost V3 =";
echo "=======================";
echo "";
free | awk '/Mem/{print "Free Memory (Before Boost) : "$4/1024" MB";}'
echo "";
echo "";
echo "";
echo -n " Working";
sync;
sleep 1
echo -n ".";
echo "3" > /proc/sys/vm/drop_caches;
sleep 1
echo -n ".";
dc=/proc/sys/vm/drop_caches
dc_v=`cat $dc`
if [ "$dc_v" -gt 1 ]; then
	echo "1" > /proc/sys/vm/drop_caches;
else
	echo " Error When Boosting ! ";
	exit
fi
sleep 1
echo -n ".";
echo "";
sleep 1
echo " [ -=|Adrenaline Boosted|=- ] ";
echo "";
echo "";
echo "";
free | awk '/Mem/{print "Free Memory (After Boost) : "$4/1024" MB";}'