tweak for kernel cfs

[pixiebob]

hi,
i propose to you a new tweak for kernel CFS only, that is a little bit different than tweak ch33kybutt's or luismaf's, more for preserve battery.it is for any rom 2.1 or 2.2, CM or aosp.
the tweak is oriented performance(without sacrifice battery) when screen on and save battery screen off.
the task scheduler is based on IBM recommandation see ici and ici for more info.
with this value the cpu is more available,i obtain good result in vmstat when i launch several app the cpu is less busy.
it improve the task scheduler but not changing score in quadrant same as usual .i obtain 700 that's also a good score for kernel CFS

other caracteristic:
*scheduler i/o deadline , best for ssd flash memory. fifo batch 1 Four Tweaks for Using Linux with Solid State Drives | Tombuntu
*mount all partition with noatime and nodiratime
*governor ondemand more reactive than defaut conservative.
*i take parameter from here that is best for preserve battery Swappolube - maemo.org wiki
*tweak tcp/ip from here: SpeedGuide.net :: Linux Tweaking
*activate oom_kill_allocating_task: avoids the expensive tasklist scan oom_kill_allocating_task | LinuxInsight
_laptop_mode set to 5:see here: Laptop Mode / Laptop Mode Tools FAQ | Laptop Mode Tools


the file undo_all_tweak erase my tweak, ch33kybutt tweak and luismaf
sorry for my bad english i'm french.

version V11.2 for kernel CFS only

changelog:
_ remove all loop because loop increase consumption battery.
_add tweak faster 2g/3g Hack for rooted phones promises faster 2G/3G speeds | edclark | Androinica
_reduce ring call delay Build.prop edits = great battery life + fast phone + full market
_enable power collapse mode for ultra low power when the phone is in standby Boot Options - Android on HTC
build.prop ro.ril meanings - CyanogenMod Forum

edit:unfortunately this feature "power collapse" is only available for htc phone so no effect on spica

[munchy_cool]

applicable to CM?
can it be applied over SSwitch by cheeky?
do we still need to set UV in kernel?

[pixiebob]

yes on cm applicable on android 2.1 2.2 but only kernel CFS.
yes it erase tweak ch33kybutt and luismaf automatically.
no you can't set UV in recovery because the tweak control this but you can edit this parameter on my tweak "90screenstate_scaling" change the second line if you want higher value undervolt screen off

---------- Post added at 06:01 PM ---------- Previous post was at 04:18 PM ----------

i put value 150 undervolt screen off because certain spica can freeze with higher value.certain has good quality cpu other not.

[mohsanraza]

certain has good quality cpu other not

You means quality of CPU hardware varies? Strange...

[pixiebob]

You means quality of CPU hardware varies? Strange...

yes it's true it's depend of quality fabrication cpu.the limit undervolt it's not the same for all spica.i know certain guy can reach 240 undervolt without freezing

[-west-]

pixiebob..
ch33ky's tweak is named as 98ssswitch, while yours is 90screenstate_scaling.
i read somewhere here that the init.d is running in alphabetical order, so that means your tweak will be overwritten by ch33ky's tweak (if it's there in init.d), am i wrong?

edit: oh.. i see you delete the files in the script

[pixiebob]

pixiebob..
ch33ky's tweak is named as 98ssswitch, while yours is 90screenstate_scaling.
i read somewhere here that the init.d is running in alphabetical order, so that means your tweak will be overwritten by ch33ky's tweak (if it's there in init.d), am i wrong?

edit: oh.. i see you delete the files in the script

yes in update-script i included to erase all the tweak known(98ssswitch,atucha,06tweaks) before installing my tweak.

[samer72]

I'm trying it since yesterday I fill that multitasking management is better ,and the phone have a Little quicker response,for now it's a best tweak i tried with ck kernel cfs.009 ,thanks

[shift_MABROUK]

You means quality of CPU hardware varies? Strange...

Every Spica is unique. It has it's proper specificications.
Otherwise, under same configuration (same installation, same mod, kernel) all spicas get the same benchmark result: same linpack, same quadrant..


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[IT4ALii3EN]

yes it's true it's depend of quality fabrication cpu.the limit undervolt it's not the same for all spica.i know certain guy can reach 240 undervolt without freezing

MDR , He did not return ! 248 please but it's difficult when my battery is less than 50% , now , I am in 240 for have never freeze