yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Original Android Development] myshu:
test11 is the best so far on 2.3.5 XEF stock

no more problems in interface smoothness and great battery life.

lost 2% in 9 hours deep sleep. Compared to other test versions , this one stayed asleep for the whole night , except when i started moving the phone.

The sensors inside the phone awake it when you move it around :)

could it be changed so all the sensors go to sleep with the phone , and only center pad or power button brings them to life ? :)
[Galaxy S II Original Android Development] tarpek:
Here is mine:
[Galaxy S II Original Android Development] mdbde:
What is your Screentime
[Galaxy S II Original Android Development] BrandoHD:
I actually sent you a PM about that

This Test 11 is pretty good so far, 17 hours, 1hr 20m screen on time, 64% battery left
[Galaxy S II Original Android Development] luki4:
The test 11 is very very good battery life!
[Galaxy S II Original Android Development] AndroidGX:
test11 ain't that bad.. :p

But in term of battery drain, I would say it's same level as my favorites.. (test8/test5/test3).
[Galaxy S II Original Android Development] nikzDHD:
Test 6 first cycle on a 2000mah battery on simple and clean, KI4 modem, only 2% drain overnight with wifi on nothing syncing though apart from weather update overnight, day usage 1 both gmail and exchange on sync, day 2 gmail on manual exchange on 5 minute polling, nothing else syncing apart from weather app.

Could of squeezed a bit more out of it but went to sleep and on charge it went.

Happy with that.
[Galaxy S II Original Android Development] xcarecrow:
my stats with speedmod 18 test6:
[Galaxy S II Original Android Development] dave2:
Cant boot into cmw recovery. Says failed, signature something like that?
[Galaxy S II Original Android Development] n00n00:
Hey thanks hardcore. But if it's something that that you see that improves your kernel then you really dont need to in my opinion.

great work!
[Galaxy S II Original Android Development] BrandoHD:
If an app is crashing because it's not there, then it's fairly obvious that the kernel does need it. It can't be enabled by a user.

Sent from Samsung Galaxy S II
[Galaxy S II Original Android Development] Canadoc:
Overall love the kernel but I do find the wifi performance weak.

Get much better reception with other devices.could this be kernel related?
[Galaxy S II Original Android Development] hardcore:
the kernel doesn't need it, but that app does because it installs a kernel module. Maybe needs it for debugging or compatibility checks or something.

Anyway no harm putting it in, just makes the kernel slightly bigger.
[Galaxy S II Original Android Development] radicalgel:
Thanks man!
[Galaxy S II Original Android Development] tonysac:
Welcome...:)
[Galaxy S II Original Android Development] It_ler:
Try to flash the kernel again.

Then hold Volume UP + Home + Power buttons until you see the recovery menu ... or the failure message again.

Hope that it will be the recovery menu.
[Galaxy S II Original Android Development] amitoberoi:
Best battery

I have been trying 18 test 8 and it is giving me the best battery till now. So i am sticking with it for the time being. May be i will try test 11 as some positive reviews are there.
[Galaxy S II Original Android Development] It_ler:
During the night with SpeedMod K2-18-test11 (about 9h): Battery loss of 18%

Synch/wifi/Talk/Skype on all the time: 9h 7m 9s

Awake: 1h 24m 31s

Hmm, battery drain of 18% during the night, it is the worst result of all SpeedMod kernels I have tested so far.

Here are my current battery stats after 1 day and 1 night:

Battery power: 48%

Time on: 21h 13m 39s

Wifi on: 18h 16m 12s

Awake: 4h 2m 34s

Screen on: 1h 3m 9s

Deep sleep: 17h 11m 37s (80%)

So, for me (my phone and my "normal" usage), this kernel is not the best battery saving SpeedMod kernel.

It is a little bit worse than Test10 and Test8. Test3, Test5 and Test9 were the best I tested so far - for me (my phone and my "normal" usage).

I continue testing but can't await flashing the next SpeedMod kernel version.

(Yes, I become more and more adicted :eek:)
[Galaxy S II Original Android Development] planetf1:
A small amount too be accurate write but with test 11 over the hours I had around 95% sleep, barry reading 99%. 3G connected, wifi data, sync active.

Really like speedmod!
[Galaxy S II Original Android Development] richyy74:
I tried to do some correct tests but battery monitor widget is just too inaccurate /battery ended up charging during a 30min sleep/, antutu battery test measures a completly different thing and provides an unuseable score.

What I do think after all the tests:

Battery life is considerably better then stock

Smoothness is better then stock

Preempt or preempt-voluntary has no big impact on battery for me. With cfq I have some more tw stuttering and jerkiness on preempt-voluntary, deadline and noop makes TW perfectly smooth on any version.

Cpu hotplug also made no big impact on battery and no hotplug feels snappier.

Benchmarks shows better results without hotplug obviously but differences are in the 5%-10% range so really not noticable anywhere.

My favourites are: test8, test5, test11 in that order.

For now I stick with test8 until major changes come from Hardcore.

@Hardcore I really would like to thank you for trying out new things and pushing the limits with the k18s.

Sent from my GT-I9100
[Galaxy S II Original Android Development] MaGiXeN:
Testing 18/11 vs 17/1 and my results are clearly. The 17/1 over night 8hours 3% of battery life, 18/11 9% of life, both devices in flight mode, same rom and without any other app in the background.

Still Kernel 17/1 wins again. Why Kernel version 18 use so much more of Battery against 17?
[Galaxy S II Original Android Development] Vahidmoby:
In my opinion we can't judge a kernel only in 8 hours in Night

u just keep it for 3-4 days and see OVERALL Battery usage

sometimes u Lose 3% in two min Surfing

and Somtimes u Lose just 1% in 20 min Surfing

BTW OVERALL battery Usage is important

;)
[Galaxy S II Original Android Development] amitoberoi:
Hey guys

Maybe an offtopic question but since i keep trying all versions of speedmod kernel i yhought this is the place to ask. I am getting major wakelocks with expense manager backup. The file it shows is com.expensemanager.expense manager. However i have checked with autorun manager and alsi with another task manager i just cant find this process. I have attached the betterbatterystats snap. It is item no. 2. Any ideas pls...
[Galaxy S II Original Android Development] BrandoHD:
Thanks for clearing that up for me
[Galaxy S II Original Android Development] vuidoi:
@hardcore

My Beer for you

5KH50717NH826221V

mikimod v6 + speedmod k2-17 test1 is the Best
[Galaxy S II Original Android Development] lynx2k50:
2000mah battery?
[Galaxy S II Original Android Development] vuidoi:
No 1650mAh Original Battery
[Galaxy S II Original Android Development] s2d4:
no phone calls? looks like he switches off data as well.. Leave everything on I say
[Galaxy S II Original Android Development] lynx2k50:
4h and 40% left with 1650? Wow not normal. Tell me your secret. :-)
[Galaxy S II Original Android Development] pedrolopes665:
can someone please upload test8?
[Galaxy S II Original Android Development] adl:
Can anybody tell me if these Android System and Android OS values are ok?

Seem a bit high compared to other screenshots i´ve seen around here.

I use GOA ROM 1.6 (which uses KI4) with Speedmod 16 kernel.

Thanx for any reply!
[Galaxy S II Original Android Development] initials:
Does any one experience like this? I suddenly feel warm in the pocket. I know the battery is drained fast. I reboot the phone and the battery level drops much! i am on cognition777 r2 and speedmod 18 test 11
[Galaxy S II Original Android Development] CamoGeko:
Seem alright to me, you might wanna use the betterbatterystats app to make sure nothing is keeping your phone awake while the screen is off.

Communicated from a Galaxy far far away via an XDA premium quality neurotransmitter.
[Galaxy S II Original Android Development] adl:
Ok, thanx for your reply!

Was just baffled as i saw in other screenshots these 2 where more like 5 and 8.
[Galaxy S II Original Android Development] CamoGeko:
Yeah I know what you mean, saying that though every phone is different (rom, modem, amount of apps installed etc....).

It all means that performance will differ, never seen 2 devices having exactly the same battery and performance figures.

Communicated from a Galaxy far far away via an XDA premium quality neurotransmitter.
[Galaxy S II Original Android Development] It_ler:
Can confirm this statement for me too.

Here are my current battery stats for SpeedMod K2-18-test11 after 2 days and 1 night:

Battery power: 13%

Time on: 1d 8h 39m 7s

Wifi on: 23h 20m 16s

Awake: 5h 56m 8s

Screen on: 1h 35m 22s

Deep sleep: 26h 43m 37s (81%)

Battery savings are OK, but for me (my phone and my "normal" usage) there is no significant difference to Test7, Test 8 and Test10.

Only Test5, Test3 and Test9 were a little bit better for battery life (on my phone with my "normal" usage).

Think about flashing an older SpeedMod kernel for examine the battery life under same conditions as the last ones, because Hardcore has not posted a new version ;-)
[Galaxy S II Original Android Development] myshu:
why hasn't anyone used the open sourced updated mali 400 drivers into a kernel yet. they might bring a lot of performance updates
[Galaxy S II Original Android Development] KennyLegend:
They have been tried. They cause lag with current sources . Look again ;)
[Galaxy S II Original Android Development] MaGiXeN:
I agree again, 17/1 best Kernel for me at the moment, too.
[Galaxy S II Original Android Development] nikzDHD:
Second cycle on test 6 for me on 2000mah battery.

Screen on: 5 hours, Voice calls: 48 mins, some game play, browsing net, emails on sync daytime only, wifi and 3g on at all times, wifi at home 3g at work. 2% left, total time on: 1 day 15 hour 33 mins.

Time to test 11 me thinks.
[Galaxy S II Original Android Development] hansation:
woah! my first time to try test8. this is totally fast! like a rabbit on steroids! lol.
[Galaxy S II Original Android Development] iNeri:
I dont know guys, but for me k2-16 still being the best.

With batista rom 2.6 & 2.7 and stock battery i reach 7hrs of screen on with wifi on all day, bright to the lowest couse at work is not good iluminated.

Quadrant score 5000 and antutu 6000 points.:D
[Galaxy S II Original Android Development] aqualeris:
I realise screen time on may not be a good measure of battery life. If your screen is largely black then of course you'd hit 5-7hours easily. If you view brighter colours mainly like on Twitter or Facebook frequently then getting 2-3hours screen time on is pretty decent I would say? If I remember correctly when the SGS SAMOLED displays white it consumes 3x more power than an iPhone's LCD. That's how much of a power hog a white screen is.

Nevertheless @iNeri whatever it is 7hours and phone running for 15hours is extremely impressive. What is your ROM and modem?
[Galaxy S II Original Android Development] iNeri:
Yeah,you right. I always try to use dark themes and colours for battery saving. Anyway i like it :D. Tapatalk for example i set it dark type.

Modem is ki1. Batista rom 2.6. Speedmod K2-16

No auto sync. No location service.

Lot of web surface.tapatalk.facebook. some gaming with wifi off :)

Enviado desde mi GT-I9100 usando Tapatalk
[Galaxy S II Original Android Development] iNeri:
Yeah,you right. I always try to use dark themes and colours for battery saving. Anyway i like it :D. Tapatalk for example i set it dark type.

Modem is ki1. Batista rom 2.6. Speedmod K2-16

No auto sync. No location service.

Lot of web surface.tapatalk.facebook. some gaming with wifi off :)

Enviado desde mi GT-I9100 usando Tapatalk

Damn tapatalk,sorry for the doble post xd
[Galaxy S II Original Android Development] interfreak:
Reverted back to the stock kernel for a while, I did see an increase in battery use so have re-flashed speedmod. Interesting experiment though! Just goes to show that stock isn't always best. :)

Using K2-18(6) as it seems to be the best performer for me so far, in terms of battery use and performance.
[Galaxy S II Original Android Development] nickporwal:
For me test 11 is working best. Great performance, smooth and good battery life. thanks hardcore.
[Galaxy S II Original Android Development] renton82:
For me too!
[Galaxy S II Original Android Development] Liebhild:
With 18-11 I had again that "not reacting black screen".
[Galaxy S II Original Android Development] Seifer1975:
I think all the non hotplug versions suffered from this problem
[Galaxy S II Original Android Development] miketwn:
test 6 is also for me the best too
[Galaxy S II Original Android Development] Mechanisms:
Same here!

Thanks hardcore!
[Galaxy S II Original Android Development] richyy74:
I do not remember having it in test8 for example. As I know test11 is hotplug btw.

Sent from my GT-I9100
[Galaxy S II Original Android Development] Tyrol:
Not sure if this is the right place to ask, but I've been having alerts about the Suspend & Events processes from Watchdog. See the attached screenshot.

As far as I remember, the alerts only started coming out at about Test9 onwards, but don't quote me on that. Should I be worried about the processes taking up > 60% like it shows in the screenshot?

-----------------------

Tapatalking to the beat on Galaxy S II.
[Galaxy S II Original Android Development] It_ler:
As hardcore has not posted a new version (> SpeedMod K2-18-test11), I flashed an older test version to redo some tests under exactly same conditions to get a "fair" comparison to the other, newer kernels.

Everything is specific to my phone, my "normal" usage and my home location. Most values are exact results, but some are rounded. I usually have wifi, synch (three email accounts, calendar and news), Google Talk and Skype on.

I am running on Frankenstein XWKJ3 ROM and Samsung's standard 1650mAh battery.

Here are my current results:

Benchmarks

Battery stats

I have to redo some tests of other SpeedMod kernels (Test6, Test7, etc.), because I recognized a slight difference in conditions (installed a new battery monitor app).

As soon as I have redone those tests, I will update my result comparison and post it again.

For now, Test10 became the most efficient kernel for me (my phone and my "normal" usage).
[Galaxy S II Original Android Development] pedestre:
Me too.I have gone back to test6

Enviado desde mi GT-I9100 usando Tapatalk
[Galaxy S II Original Android Development] Mechanisms:
Wow! Thanks a lot for this!
[Galaxy S II Original Android Development] hardcore:
K2-18-test12:

- High resolution timer HRTICK enabled in CFS scheduler

- Scheduler tweaks

- Some kernel config option cleanups
[Galaxy S II Original Android Development] mariotme:
Thanks hardcore.

will flash it tonight and see. Will keep you posted.

Hardcore can you please do what ever Siyah and the other kernel Devs do to their kernels to not show the high AOS usage in the battery stats? i know it sounds stupid but it helps in a psychological way lol
[Galaxy S II Original Android Development] It_ler:
Just downloaded and flashed SpeedMod K2-18-test12.

Will do all my "standard" tests and add its results to my comparison list and post it as soon as it makes sense.

My first benchmarks show that Test12 is not the fastest SpeedMod kernel.

So I am curious to examine its battery savings.
[Galaxy S II Original Android Development] kidau:
anyone got k18 test 10 to share please? thx in advance
[Galaxy S II Original Android Development] dzontra11:
Test 12..first bench results..4264.. Not baf at all.Smooth and fast and much faster typing on keyboard....very strange.
[Galaxy S II Original Android Development] dzontra11:
..and also..no light on back and menu buttons.
[Galaxy S II Original Android Development] SaneinOne:
I'm not experiencing this.
[Galaxy S II Original Android Development] It_ler:
If you want to have light on back and menu buttons, then go into Settings menu => Display => Touch-Key illumination time (or something like that - I am running on a German version).

Just select 1,5 or 6 seconds and test it.

The touch-keys' light works fine on my XWKJ3 ROM running on SpeedMod K2-18-test12.

---------- Post added at 08:29 PM ---------- Previous post was at 08:06 PM ----------

You have got a new PM.

Just have a look ;-)
[Galaxy S II Original Android Development] morphjk:
I do as well.
[Galaxy S II Original Android Development] BrandoHD:
I've had this once, I had to plug in the charger to get the screen on, I've also had a couple occurrences of my screen turning a very bright blue, once on test 8 iirc, then on test 11, I have rolled all the way back to 17 test 1, going to run each kernel for a week or so to figure out if it's a personal hardware issue or a kernel issue.

Sent from Samsung Galaxy S II
[Galaxy S II Original Android Development] jlieu:
I found that that my screen have serious yellowish when in low brightness, looks like burned which noticeable at daylight and worst at night. And, when i set screen with dark background, example task manager's Active applications tab, i noticed that some uncomfortable dark spot which look like bricked screen which Noticeable only at night.

Is this software related or hardware related? any fixes?
[Galaxy S II Original Android Development] trixnix:
Post a pics of your phone will help to determine your problem.

Sent from my GT-I9100
[Galaxy S II Original Android Development] iNeri:
Anyway, thats 's not kernel related, it's hardware related, the screen is defective...
[Galaxy S II Original Android Development] amitoberoi:
Hey guys

Facebook is killing my battery. How do i stop this. Anyone pls.........
[Galaxy S II Original Android Development] shahulvm:
Facebook > chat > options > offline

Facebook > options > settings > refresh interval

That should help you..
[Galaxy S II Original Android Development] beaver2233:
Uninstall and use mobile version, much better... If you need chat use GoChat
[Galaxy S II Original Android Development] amitoberoi:
Thanks. I had facebook - chat - go offline. I think it shoukd serve the purpose. Lets see the effect. But after clicking on go offline and exiting the fb app iwhen i again clicked on chat it was again giving me an option ti go offline. Is this normal.
[Galaxy S II Original Android Development] amitoberoi:
Definitely mobile version is easier on the battery. But i want to keep the notifications active with a refresh interval of an hour. I think notifications are not possible on the mobile version...
[Galaxy S II Original Android Development] beaver2233:
Yeah, no notifications, but I'd rather have a strong battery life ;) though if it can be solved simply by going offline on chat than that's also a solution, but may not be a permanent solution...
[Galaxy S II Original Android Development] shahulvm:
thats quite normal...after going offline...dont go to chat again...as each time you click on it...it gets logged in again.
[Galaxy S II Original Android Development] amitoberoi:
Doing this seems to have helped as the wakelock time for fb has stopped on 42m52sec and is not increasing. Thanks again ...
[Galaxy S II Original Android Development] eseregin:
K2-18-test12 - brilliant for me battery life! Awesome kernel, as usual though 8-)
[Galaxy S II Original Android Development] zanderzone:
Wow! That was quite a bit of interesting reading through all these pages since Hardcore started releasing test kernels in version 17 & 18. Downloaded K2-18, test 11 ....will use it for couple of days and post my impressions. ...was using k2-16 before this.
[Galaxy S II Original Android Development] thez3ro:
I have simmilar spots but only when i pull down the status bar at night... that means when i watch a greyish surface.
[Galaxy S II Original Android Development] shahulvm:
Am going to try test12 after being extremely happy with test11
[Galaxy S II Original Android Development] It_ler:
Can agree to both statements after my first tests:

1. Test12 has not the best benchmark scores, but feels smooth.

2. Test12 has very good battery savings - similar to Test10 on my phone.

After finishing my tests, I will post all the numbers in this thread.
[Galaxy S II Original Android Development] shawnaye:
+1 on that.

benchmarks suck.
[Galaxy S II Original Android Development] zanderzone:
Can somebody pm Test10 links to me ? Thanks
[Galaxy S II Original Android Development] pedestre:
http://dl.dropbox.com/u/19078986/sp-s2-k2-18-test10-CWM.zip
[Galaxy S II Original Android Development] zanderzone:
thank you friend
[Galaxy S II Original Android Development] Hilmesh:
This is what i got till now for battery is it good?

Can it get better?

also i used the Quadrant App from Market for the benchmark. is it correct or should i use some other app.

sorry for probably being naive as i am new to android and all :-).
[Galaxy S II Original Android Development] :
How much screen on time mate? :)

Sent from my SGS2 - Checkrom Revo 3.1.1 | Speedmod k18 | Vertumus ICS Theme |
[Galaxy S II Original Android Development] It_ler:
Looks good.

This is SpeedMod K2-18-test10, isn't it?

And are you running on the standard 1650mAh battery?

You should run Quadrant Standard benchmark three times and post only the 3rd run score, as this got "standard" for posting and comparing this results.

You can install and use other apps to examine your battery stats, such as CPU Spy (shows you how much time the CPU was on which frequency and deep sleep) and BetterBatteryStats (shows wakelocks, wifi on, awake and screen on times, etc.) both available from the Market.

But some battery apps and widgets will have influence on your battery usage.

So, be careful not to install too many apps running all the time, as they may drain your battery.
[Galaxy S II Original Android Development] doongoo:
I have a problem with my SGS2 using s2-k2-16 kernel.

In CPU spy I never had 1000 Mhz or 1200 Mhz since I've installed this kernel. It was suspect for me, so I let CF-Bench and Antutu bench run and both showed, that my CPU runs only with max. 800 Mhz.

Earlier I had SetCPU with ondemand, min. 200 MHz, max. 1200 MHz, but - after contacting here with hardcore - I deleted it from my phone. After deleting SetCPU I've re-flashed the kernel, but the problem is still here: my CPU runs at max. 800 MHz.

I can not believe, that the kernel has limited the frequency, so what can be the problem?

And of course, what can be the solution to get back my CPU-s full frequency-range? Do I have to re-install SetCPU and let it control my CPU or is there any other possibility (which I think, it should be)?
[Galaxy S II Original Android Development] iggybuenaventura:
So after 12 versions of speedmod 2-18, which kernel matches CheckROM Revolution 3.1.1 the best? Personally I think it's test 8, and 11 so far. :D
[Galaxy S II Original Android Development] jlieu:
How come samsung provide such poor screen? sad....

going to replace a new screen soon. Hope that the yellowish (screen burn) and uncomfortable spot get fixed.
[Galaxy S II Original Android Development] It_ler:
As I had never such issue, I can only suggest to try the following - just step by step and if one step does not help, try the next one:

1. Check that there is no other CPU controlling app active/installed.

2. Reboot into recovery mode (Volume UP + Home + Power), wipe cache partition and Dalvik cache, then reboot the phone.

3. Reboot into recovery mode (Volume UP + Home + Power), do a factory reset, then reboot the phone.

4. Flash SpeedMod kernel again, then reboot into recovery mode (Volume UP + Home + Power), do a factory reset, then reboot the phone.

5. Flash the latest SpeedMod (test) kernel, then reboot the phone.

6. Flash the ROM again, then flash SpeedMod kernel again, then reboot into recovery mode (Volume UP + Home + Power), do a factory reset, then reboot the phone.

Hope that something helps.

Good luck !