[RSSScript] Startup Script Speed

[rrrulo]

You apply this script at your own risk! Nothing should go wrong but anyway make a backup of your phone. Not compatible with other similar scripts (like ssswitch or atucha)


Well, its always good to have choices
There's ssswitch by ch33ky and the version modded by voku. Both great.
There's to the new version of atucha, amazing one!

But well i want to bring you some things i've testing, based on hardcore's startup script (thanks a lot to him) and maybe they're pretty similar to ssswitch and atucha but well, not every script responds in the same way for all spicas, as you can see there's a lot of users who cant use atucha or ssswitch, so here's another script.

I been testing for a while and works pretty good, phone feels fast and smooth.
And with this we should get improved battery life (testing)

# Tweak cfq io scheduler
for i in $(ls -1 /sys/block/stl*) $(ls -1 /sys/block/mmc*) $(ls -1 /sys/block/bml*) $(ls -1 /sys/block/tfsr*)
do echo "0" > $i/queue/rotational
echo "1" > $i/queue/iosched/low_latency
echo "1" > $i/queue/iosched/back_seek_penalty
echo "1000000000" > $i/queue/iosched/back_seek_max
echo "3" > $i/queue/iosched/slice_idle
done
# Remount all partitions with noatime
for k in $(busybox mount | grep relatime | cut -d " " -f3)
do
sync
busybox mount -o remount,noatime $k
done

# Tweak kernel VM management
echo "0" > /proc/sys/vm/swappiness
#echo "10" > /proc/sys/vm/dirty_ratio
#echo "4096" > /proc/sys/vm/min_free_kbytes

# Tweak kernel scheduler, less aggressive settings
echo "18000000" > /proc/sys/kernel/sched_latency_ns
echo "3000000" > /proc/sys/kernel/sched_wakeup_granularity_ns
echo "1500000" > /proc/sys/kernel/sched_min_granularity_ns

# Misc tweaks for battery life
echo "2000" > /proc/sys/vm/dirty_writeback_centisecs
echo "1000" > /proc/sys/vm/dirty_expire_centisecs

# Remount all partitions with noatime
noatime is the fastest

# Tweak cfq io scheduler
Tweaked settings of the disk io scheduler more for flash memory. Defaults are optimized for spinning harddisks. Lowered the idle wait, re-enable the low latency mode of cfq, removed the penalty for back-seeks and explicitly tell the kernel the storage is not a spinning disk.

# Tweak kernel VM management
Set tendency of kernel to swap to minimum, since we don't use swap anyway.
Lower the amount of unwritten write cache to reduce lags when a huge write is required.
Increase tendency of kernel to keep block-cache.
Increase minimum free memory, in theory this should make the kernel less likely to suddenly run out of memory.

# Tweak kernel scheduler
Make the task scheduler more 'fair' when multiple tasks are running. This has a huge effect on UI and App responsiveness.

# Miscellaneous tweaks
Increase the write flush timeouts to save some battery life.

I have test this on yonip v11 and XM-BFS with CM 8.3.2 (but it should work in other mods, try it at your own risk).
With both i reached above 800 @quadrant and the values are always above 770 (with all tweaks and boosts mods applyed)

If everything works fine, will include this in roottools

Flasheable zip via recovery attached at the end of the post. It will erase any other similar script that you had instaled before.

Download:
http://forum.samdroid.net/attachment...eed-rrrulo.zip

Discussion thread:
[Discussion][RSSScript] Startup Script Speed

[rrrulo]

v2:

Changelog:

- Enable minimun free kbytes (increased) and Increase tendency of kernel to keep block-cache.