[krn.module] smartass governor for X10 GB (updated, configurable!) - XPERIA X10 Android Development

Hello guys,
I've managed to compile the module from here: http://forum.xda-developers.com/showthread.php?t=1159899 updated by AnDyX for X8 which I updated for X10. Initially the module was offered by erasmux.
It works for 2.3.3 kernel that is: 2.6.29-00054-g5f01537.
You can configure various parameters:
Code:
# pwd
pwd
/sys/devices/system/cpu/cpu0/cpufreq/smartass
# ls
ls
debug_mask
up_rate_us
down_rate_us
up_min_freq
sleep_max_freq
sleep_wakeup_freq
awake_min_freq
sample_rate_jiffies
ramp_up_step
ramp_down_step
max_cpu_load
min_cpu_load
sleep_rate_us
#
Install guide:
Copy the cpufreq_smartass.ko to the root of your SD card and then execute the following commands with the phone connected to the PC:
Code:
adb shell
su
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
cp /sdcard/cpufreq_smartass.ko /system/lib/modules
cd /system/lib/modules
insmod cpufreq_smartass.ko
echo "smartass" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
You can confirm that installation works either by SetCPU (it will report scaling "smartass") or by executing the following command:
Code:
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
Results:
Below are my 17 hours run:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I was running this governor today and I managed to get 47% of battery in 17 hours (listening to music 2 hours, with screen on at 0% brightness, reading the news in the metro 10-15 minutes, and 4 email accounts syncing every 15 minutes). During the night (6 hours), it only lost 2% of the battery.
As far as I can see, when it goes to deep sleep, it stays there, if you minimally use the phone, it should last a long time. But once you turn on the phone, it will kick into high gear (998Mhz) very fast, to allow for fast response - and won't use any other intermediate frequencies.
Settings:
/*
* The minimum amount of time to spend at a frequency before we can ramp up.
*/
#define DEFAULT_UP_RATE_US 24000;
/*
* The minimum amount of time to spend at a frequency before we can ramp down.
*/
#define DEFAULT_DOWN_RATE_US 49000;
/*
* When ramping up frequency with no idle cycles jump to at least this frequency.
* Zero disables. Set a very high value to jump to policy max freqeuncy.
*/
#define DEFAULT_UP_MIN_FREQ 0
/*
* When sleep_max_freq>0 the frequency when suspended will be capped
* by this frequency. Also will wake up at max frequency of policy
* to minimize wakeup issues.
* Set sleep_max_freq=0 to disable this behavior.
*/
#define DEFAULT_SLEEP_MAX_FREQ 245760
/*
* The frequency to set when waking up from sleep.
* When sleep_max_freq=0 this will have no effect.
*/
#define DEFAULT_SLEEP_WAKEUP_FREQ 998400
/*
* When awake_min_freq>0 the frequency when not suspended will not
* go below this frequency.
* Set awake_min_freq=0 to disable this behavior.
*/
#define DEFAULT_AWAKE_MIN_FREQ 0
/*
* Sampling rate, I highly recommend to leave it at 2.
*/
#define DEFAULT_SAMPLE_RATE_JIFFIES 2
/*
* Freqeuncy delta when ramping up.
* zero disables and causes to always jump straight to max frequency.
*/
#define DEFAULT_RAMP_UP_STEP 220000
/*
* Freqeuncy delta when ramping down.
* zero disables and will calculate ramp down according to load heuristic.
*/
#define DEFAULT_RAMP_DOWN_STEP 160000
/*
* CPU freq will be increased if measured load > max_cpu_load;
*/
#define DEFAULT_MAX_CPU_LOAD 75
/*
* CPU freq will be decreased if measured load < min_cpu_load;
*/
#define DEFAULT_MIN_CPU_LOAD 25
/*
* When screen if off behave like conservative governor;
*/
#define DEFAULT_SLEEP_RATE_US (usecs_to_jiffies(500000))
To update one of the settings, the standard echo command should be executed:
Code:
echo "80" > /sys/devices/system/cpu/cpu0/cpufreq/smartass/max_cpu_load
(in this example, the max_cpu_load will get the value 80, meaning that the CPU should be 80% at least, before a jump in frequency happens.
User biscoitu has a list of settings here http://forum.xda-developers.com/showpost.php?p=16256835&postcount=161 but for X8 I think. They could be a starting point for X10 tuning I will also try to see which settings work best, but it will take a while.
Download:
Use it at your own risk!
cpufreq_smartass.ko
Enjoy!
Special thanks to:
a) wolf which gave me hope with X10
b) all guys that made flashing X10 a reality
c) AnDyX for the source code and the workaround for the missing kernel symbols.

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Awesome dude!!! Will have a try when I get home
Regards
Sent from my X10i using XDA Premium App

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dude! I want to test it, how do I install it (i mean step by step for a noob like me)

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so smartass is not so smart for now... will wait till smartass iq get higher... but nice work dude... btw don't be smartass and give to smartass some more iq soon... thanks!

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Thanks for support guys!
Later edit: I've modified first post to include the installation steps.

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viulian said:
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
Click to expand...
Click to collapse
better to use
HTML:
mount -o remount rw /system
or
busybox mount -o remount rw /system
lot better and removes the need to selecting mtd block corrrectly coz that differs sometimes.

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automatic enabling of smartass
type this in your install-recovery.sh
Code:
insmod /system/lib/modules/smartass.ko
echo "smartass" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
This should make it your setting as needed on every reboot

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Can this be made into a zip to.flash ?
Sent from my X10i using XDA Premium App

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I'm sorry, I don't have experience in creating .zips to be flashed ... anyway - is faster to copy manually and you don't need to reboot the phone or anything.
Once I finish it (to get it to be configurable over sysfs) then I will investigate this possibility of flashing.

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Cant I do it through root explorer?
Sent from my X10i using XDA Premium App

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insmod /system/lib/modules/smartass.ko
echo "smartass" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
Click to expand...
Click to collapse
Seems that placing these lines directly in install-recovery.sh doesn't work. But placing them into additional script in /etc/init.d/98-smartass and adding 98-smartass to the install-recovery.sh works fine. Even after reboot you still have smartass governor.

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Looks like CPU frequency isn't changing.
May be the problem is in acpuclock.o (compiled for Xperia Arc but not for Xperia X10???.

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creage said:
BTW, be aware, that this module is not compatible with latest wolfbreak's tweaks. Actually they are just overrides your governor and cpu setup depending on device state.
Click to expand...
Click to collapse
It does not affect wolfbreak's tweaks. Those will reset the CPU state after each reboot. So you can try the governor, and if you don't like it, just reboot and old settings go back. In case you decide to keep the governor longer, then yes, the startup scripts need to be modified (not only to activate it, but to insert the module also). But we're not there yet
Karlson2k said:
Looks like CPU frequency isn't changing.
May be the problem is in acpuclock.o (compiled for Xperia Arc but not for Xperia X10???.
Click to expand...
Click to collapse
How do you expect it to change ?

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whats the point of this? as per the cpuspy i think the same problem persist. only 245 and 998 mhz freq's are used.

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I think this is a problem with the phone speed. Imagine this scenario:
a) user starts an application, CPU is in deep sleep (or maybe idleing at 245Mhz). Usage goes to 100%
b) application does not finish loading in the very short time (milliseconds) specified for the ramp up period. CPU is still at 100% and thus frequency goes one step higher (384Mhz)
c) application still did not finish loading again, CPU goes again one step higher.
By the time the application finishes (and they are Java, not native so imagine the work needed to load them) CPU gets to max frequency. If it would spend longer time at intermediate steps, you would describe the phone interaction as "slow".
Another advantage, you can put a max limit on the CPU speed on screen off mode (sleep mode).
For more information please check the governor developer opinion: http://forum.xda-developers.com/showthread.php?t=730471.
This module is a a different one compared to the defaults given by Sony (ondemand and performance).
Later edit:
With the new .ko I've just posted, CPY Spy also reports intermediate frequencies as used. I will update the CPUSpy screenshot tomorrow after a day of running with the governor.

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viulian said:
I think this is a problem with the phone speed. Imagine this scenario:
a) user starts an application, CPU is in deep sleep (or maybe idleing at 245Mhz). Usage goes to 100%
b) application does not finish loading in the very short time (milliseconds) specified for the ramp up period. CPU is still at 100% and thus frequency goes one step higher (384Mhz)
c) application still did not finish loading again, CPU goes again one step higher.
By the time the application finishes (and they are Java, not native so imagine the work needed to load them) CPU gets to max frequency. If it would spend longer time at intermediate steps, you would describe the phone interaction as "slow".
Another advantage, you can put a max limit on the CPU speed on screen off mode (sleep mode).
For more information please check the governor developer opinion: http://forum.xda-developers.com/showthread.php?t=730471.
This module is a a different one compared to the defaults given by Sony (ondemand and performance).
Later edit:
With the new .ko I've just posted, CPY Spy also reports intermediate frequencies as used. I will update the CPUSpy screenshot tomorrow after a day of running with the governor.
Click to expand...
Click to collapse
Thanks alot for this nice Governor, can i use it in my ROM?

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Wolfbreak said:
Thanks alot for this nice Governor, can i use it in my ROM?
Click to expand...
Click to collapse
i want to be your first beta tester

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Wolfbreak said:
Thanks alot for this nice Governor, can i use it in my ROM?
Click to expand...
Click to collapse
Me too.
Please your help.
We need your working!

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thanks for this tweak
it work well on Trip's latest rom
and here a screen shot shows that diff cpu freq is in use

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kinglargo said:
dude! I want to test it, how do I install it (i mean step by step for a noob like me)
Click to expand...
Click to collapse
1. download terminal emulator
2. begin new session in emulator
3. type in code on first post(install guide)
4. go to set cpu and see if it's on
5. enjoy a fast muthafuggin xperia that sleeps balls deep!