Fixed SystemUI.apk for mik's CM7 - Optimus One, P500, V General

Hi,
Here's a SystemUI.apk which seems to fix the high cpu problem when charging on P500 CM7. Note: I only edited the graphical icon not the battery percentage.
How to install: remove SystemUI.apk and SystemUI.odex in /system/app/, push the new SystemUI.apk to /system/app/
Possible cause of the problem:
On receiving battery change intent, cmbatteryminiicon creates a handler which causes redraw on scheduled time, the problem is, it should only create the handler once, since the handler schedules itself for execution next time. Therefore, we got increased amount of handlers triggering redraw over time which causes the increased cpu usage over charging time.
Also attached is the edited CmBatteryMiniIcon.java
Note: a simple way to check your cpu load when charging is to install an app that shows your CPU load in the statusbar, e.g. SeePU. Charge your phone for 30 minutes and then check your CPU load. If your ROM has the bug, SeePU will continuously shows your CPU load as a 100% (full red color).
Note: requires mik_os' CM7 beta 6.5.1, wipe dalvik cache in recovery.
Note: added a new flashable zip: systemui-faster-animation for those who feel the new animation is too jumpy (aka slow) to test
28/05/2011 Anyone with empty battery could please test this new zip . I have change the animation timer based on current battery level but since my battery is still full I cannot see the animation from the beginning.

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It should be made flashable.
Testing it now.
Nice work. Now go get you self 10 posts and post it in mik_os thread.
Sent from my LG-P500 using XDA Premium App with missing Thanks Button.

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Please create flashable zip, there is another file CmBatteryMiniIcon.Java, do we need to push that files also.
Thanks.

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It's quite simple without flashable zip:
1. reboot into recovery
2. connect phone to computer
3. adb shell
# cd /system/app
# rm SystemUI.*
# exit
4. adb push SystemUI.apk /system/app/
5. reboot phone
You only need to put the apk, the java file is only required if you want to compile android.

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Yes, we need a flashable zip, plz create one soon, thanks!

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Ok I already installed it but with root explorer but I don't recomend root explorer method.(Only for those who knows what they are doing)
Sent from my LG-P500 using XDA Premium App

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eagledipesh said:
Please create flashable zip, there is another file CmBatteryMiniIcon.Java, do we need to push that files also.
Thanks.
Click to expand...
Click to collapse
No u don't its source code. For developers.
Sent from my LG-P500 using XDA Premium App

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4silvertooth said:
No u don't its source code. For developers.
Sent from my LG-P500 using XDA Premium App
Click to expand...
Click to collapse
Ok thank you both

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How do we know that currently we are having high CPU usage while charging?
Sent from my LG-P500 using Tapatalk

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lekhwani said:
How do we know that currently we are having high CPU usage while charging?
Sent from my LG-P500 using Tapatalk
Click to expand...
Click to collapse
Use Watchdog Lite.
Go to CPU usage in the app and you can see status bar using more than 30% CPU while charging. Sometimes it takes more than 50% as well.

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Will try it now. Btw I am charging now and opened setcpu. It is showing frequencies between 320 and 600 and I am not doing anything. Does this behavior also confirm this? I am on 245/729 ondemand.
Sent from my LG-P500 using Tapatalk

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Seems to have solved the high cpu. The charging animation isn't smooth anymore though, and flashes between animation frames.
A small price to pay to have the status bar use less than 1% of the cpu instead of all of it.
Thanks for this fix!

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The high cpu usage doesn't start immediately but after some time of charging you can also use mini info app to check CPU usage. Setcpu just shows the clock speed and not CPU usage.
Sent from my LG-P500 using XDA Premium App

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lekhwani said:
Will try it now. Btw I am charging now and opened setcpu. It is showing frequencies between 320 and 600 and I am not doing anything. Does this behavior also confirm this? I am on 245/729 ondemand.
Sent from my LG-P500 using Tapatalk
Click to expand...
Click to collapse
Probably yes.i.would use android assistant though it gives a exact graph and it's easy to see what the usage is sometimes when I plug mine in it it will ride on 90% milk of aware of the bug have you told him about the fix will he be putting it in his next beta version???? if so I'll probably wait for the official fix
LG-P500 using XDA Premium App running CM7, ungaze data2sd, over clocked at 787 quadrant score 2100

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nogav said:
Seems to have solved the high cpu. The charging animation isn't smooth anymore though, and flashes between animation frames.
Click to expand...
Click to collapse
In the original code, the charging animation frame is updated every 1 second, so I don't think it's supposed to be smooth.

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Flashed the zip
Before flash:
After flash:
In short CPU usage reduced to 1% from 35-60%.
This is kind of a genius work.
But after rebooting my 3g is working but not showing the h sign.
Scrolling lag while charge also seems to be gone.
Will check further.
Sent from my LG-P500 using Tapatalk

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lekhwani said:
How do we know that currently we are having high CPU usage while charging?
Click to expand...
Click to collapse
If you are running adb you could:
adb shell
vmstat
{ctrl-c to exit}
The id column is the one that shows idle percentage.
# vmstat
procs memory system cpu
r b free mapped anon slab in cs flt us ni sy id wa ir
0 0 210600 51504 112456 9272 100 228 0 1 0 2 97 0 0
0 0 210600 51504 112456 9272 138 217 0 0 0 1 99 0 0
0 0 210600 51504 112456 9272 110 214 0 3 0 2 96 0 0
0 0 210600 51504 112456 9272 136 208 0 0 0 2 98 0 0
^C
In this example my OptT shows 1-4% CPU use (ie, 96-99% idle). So the charging cpu bug was not in effect during this demonstration.
I've de-emphasised the first line because traditionally the first line of vmstat output shows since-boot average or something, and the subsequent lines are snapshots. Dunno if it's that way in this shell (busybox?) or not but thought I'd mention it.

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so maybe i was not supposed to do this but i just flashed the zip (didnt do the other steps) and now my notification bar is gone???? but it did fix the charging bug ... how can i fix??????? i saw the posted steps but then i saw the sighed zip and figured you can just use that

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dislplin01 said:
so maybe i was not supposed to do this but i just flashed the zip (didnt do the other steps) and now my notification bar is gone???? but it did fix the charging bug ... how can i fix
Click to expand...
Click to collapse
I didn't test the flashable zip, so I don't know if it works or not. If your statusbar is gone then android cannot run your com.android.systemui process. You can either flash your ROM again or use adb to replace the systemui.apk
Here's my updater-script:
Code:
mount("yaffs2", "MTD", "system", "/system");
delete("/system/app/SystemUI.odex");
package_extract_dir("system", "/system");
unmount("/system");

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Hmm, is this apk tied to a special version of mik's CM7 build? I use Beta 6.5. Installed with adb shell (removed SystemUI.apk and SystemUI.odex and then copied new SystemUI.apk to /system/app). I get constantly get FCs.
Will try to wipe dalvik cache and reboot again...