Just wondering what the difference is between the android system and android os in the battery usage monitor. I am currently on Infused 2.0.4 with the infusion kernel. Also, I am using juicedefender. I am mostly wondering because battery life has not been that great. When I first flashed Infused 2.0.0 battery life was really good. Also, what is the difference between CPU usage, CPU foreground, and stay awake? I see all of those under both android system and android os as well as a couple other apps and those numbers seem kind of high sometimes. Also, yes I did pull my battery a couple of times since flashing 2.0.4 once for just like 5 min, and again for around 30min. No noticeable change on battery life. Sorry if these are dumb questions, I tried to find out what they all meant, but I didnt find to much information on them. Thanks.
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Hey everyone, i just upgraded to a Nexus S 4G this morning from the ol samsung transform, and i was planning on applying cyanogen but then i messed with the phone a bit, did root and restored a couple of my game apps...it seems to work with very nice speed, only serious issues ive noticed are just with the signal, sensitivity of keyboard, and i havnt had time to see battery life yet..
But i was wondering, since the stock rom is so clean and fast, why are we putting on different roms like cyanogen?
More importantly, as far as kernel, whats the best kernel right now for nexus 4g? im running stock kernel, but naturally and ideally id like even more speed(not sure what id use it for, but always nice), better battery life, and better data signals..
ive been reading about overclocked kernels a little bit and such, so basically im wondering about what you guys would say to all this? should i change rom &/Or kernel? to what? why? does overclocking at 1.4ghz like these kernels say have any negative side effects? things like that.
Thanks for your response!
~ Master Ramy
Master Ramy said:
Hey everyone, i just upgraded to a Nexus S 4G this morning from the ol samsung transform, and i was planning on applying cyanogen but then i messed with the phone a bit, did root and restored a couple of my game apps...it seems to work with very nice speed, only serious issues ive noticed are just with the signal, sensitivity of keyboard, and i havnt had time to see battery life yet..
But i was wondering, since the stock rom is so clean and fast, why are we putting on different roms like cyanogen?
More importantly, as far as kernel, whats the best kernel right now for nexus 4g? im running stock kernel, but naturally and ideally id like even more speed(not sure what id use it for, but always nice), better battery life, and better data signals..
ive been reading about overclocked kernels a little bit and such, so basically im wondering about what you guys would say to all this? should i change rom &/Or kernel? to what? why? does overclocking at 1.4ghz like these kernels say have any negative side effects? things like that.
Thanks for your response!
~ Master Ramy
Click to expand...
Click to collapse
There are quite a lot of things that can be changed by flashing a custom ROM. Cyanogen is reported to be more responsive than stock android, and a slight improvement on battery life and performance. Also, with other ROMs like MIUI you can completely change the entire GUI basically. The lockscreen becomes changeable by one click in the themes app. I've also noticed a slight improvement in battery life/performance and responsiveness.
Also, with regards to kernels, they add extra features (like voodoo sound, BLN notifications, UV'ing, OC'ing, etc). Now if you're looking to overclock your CPU AND save on battery life then that is probably not going to happen. If you OC the CPU you'll as a result draw more battery power when it reaches it's peak. Hence why I went with the TEUV88 kernel. This kernel undervolts the CPU yet manages to give me the same performance as the stock kernel. It runs extremely nicely and the battery lasts me about 24-30 hours on moderate usage where as before I was getting around 16.
Hope this helps.
Edit:: note that both undervolting and overclocking can be dangerous for any phone. The kernel developers put their kernels through testing though to ensure they are stable enough for most people (I hope anyways). But be aware that it is possible to damage the hardware be either of these methods.
yeah im looking at more undervolting for battery life cause current performance seems great for me as of this point. but i mean cyanogenmod doesnt change much since its built on gingerbread, its just slightly more customized, but on the actual performance side, it is a slight increase? so whats the best kernel for undervolting and still getting stock performance or more? im guessing its the one u just mentioned? cause i saw a voodoo kernel or something on main dev page and itwas undervolted and OCed to 1.4 i think...idk.
Yeah you might be talking about the matr1x kernel. It ocs to 1.44 and is uved also. Plus has voodoo sound, bln and bld. Some people have issues with cm7 and some don't. I really don't like the look of miui so I can't say for it. But I use decks 1.3d with zero issues and matr1x kernel with zero issues along with heavy use 4+ hrs screen time in over 12hrs. Personally running 1.44 your phone will prolly lock up but I run 1.2 non stop no freezes or lockups or reboots. Try them and see qhich ones fit you and what you like.
Sent from my Nexus S 4G using XDA App
I'm still on stock with mine and honestly, I don't need anything else... i get 12-15 hours of moderate use and i don't really know what lag is because i never experience it with my phone.
The above posters are correct in everyway. I mean it definitely comes down to preference. I was averaging about 13-15h on my stock kernel/rom but my phone would be basically completely dead.
I switched to TEUV88-rammstein2 (Trinity Undervolted rom). It has Voodoo sound, BLN (backlight notification), and with todays update it has touchwake mod. So as you can see my phone lasted 15h (still with 35% battery left) with 3h of screen on, and 45m of audio streaming, and lots of texting.
Check out my post: http://forum.xda-developers.com/showpost.php?p=17108560&postcount=3154
I am running Faux-AOSP-1.3.1 with the Trinity kernel 2.6.32.45 overclocked to MHz. I turned auto brightness off. I have profiles setup in setcpu for calls, screen off, charging, battery temp, and battery level all set to 1000MHz. I have a crap ton of apps installed and no live wallpaper. Yesterday I used my phone to make phone calls, text, emails, xda, download some apps, picture messaging, and Facebook. I woke up this morning and I had almost 20 hours on that charge. I think that is excellent battery life for a 2.3.5 ROM that is not Miui. I know Miui gets awesome battery life because I have used that before but I could not believe that I got this kind of battery life out of this ROM overclocked so much. The quadrant scores are between 4500-4900. I have yet to have a screen of death, reboot, or freeze on this ROM and I have been using it for the past 4 days. I just thought that I would share this with everyone.
tidewaterns said:
I am running Faux-AOSP-1.3.1 with the Trinity kernel 2.6.32.45 overclocked to...
Click to expand...
Click to collapse
I've always experienced outstanding battery life on Faux's AOSP 1.3.1 (he mentions there's a 1.3.2 in another post but i've been unsuccessful in tracking it down). I don't get those screaming quadrant scores you get but Faux's AOSP is a battery sipper!
EB 2.3.3 version 1.0.7
I got over 18 hours of battery life with charge, moderate use, and didn't have to do anything other than flash ROM.
Its about the only thing that sucks about CM7 based ROMS, battery life just terrible and a bunch of modifications are needed just to extend battery life.
Stock 2.3.3 based ROMS aren't so bad, except that Netflix don't work, Lock Screen doesn't have music widgets, and music player widget sucks.
I generally get around 20 hours with faux, too bad his kernel wont work in the new nightly yet
Hello,
i'm new on the Nexus S. I had a Milestone and tried pretty much every custom rom, as the Milestone stock rom was slow, unstable and outdated.
I read many times "great battery life" within the description of Nexus S custom roms (e.g. Codename).
BUT, is it better than the stock-kernel battery-life? And how much better (guess)?
I ask, because most of the Roms are overclocked and perhaps the "great battery life" is relative to those speed-optimized roms.
For me the speed of the stock rom is totally okay and it seems totally stable. I would only "custom-ize" it, if the battery life would be (significant) better – else: "Never change a running system!"
AK
p.s. Links are welcome, as i didn't find any comparison like this.
I have found stock GB rom was a battery hog. I tried a few roms but loved that CNA will pull all your apps from the market for you(I didn't have to download them all manually)
With a custom rom you can change more settings, you can change governors, you can change the cpu speeds and voltage. With deep idle sleep working your phone sips power when in your pocket. I like the Air Kernel,3.x with the scary setting, seems to use lower cpu frequencies more often.
you can find roms that are stripped down to next to nothing, these should give you better battery life then stock, to fully loaded roms that most likely will not give you better battery life.
I have my cpu set to 200 min and 1400 max running air kernel with the scary governor. scored around 2500 on Quadrant and battery last pretty good as when I just have the screen on, not doing much the cpu is running 200Mhz and the phone goes in to deep sleep right away.
try CPUspy and cool tool, CPUspy lets you see the states the cpu is using for a given time and cool tool can display cpu/power details in the top bar.
Through my ROM testing with ICS, most ROMs give very comparable battery life. Battery life relies very little on the ROM itself assuming there is no wakelock or similar issue which is because of the ROM, which in a good ROM there won't be. There may be some settings which are added or changed that have some effect, but likely nothing very major, especially in my experience.
Normally the bloatware is what drains battery with unused apps opening in the background.
Custom ROMs omit and give the option of certain bloatware.
Also some ROMs have great idle compared to stock.
But overall if u control ur mobile data, wifi, gps and sync then u can better or great battery life on any ROM just as long as its not a newer ROM that is still testing. And most custom ROMs have the pull down notifications that make it easier to control all of them.
I personally use SLIM ICS and its comes simple enough that u customize it.
Vs Nexus S 4G
Hey, Just wondering what would you guys say is the best rom for + kernel for battery life that also isn't stupidly slow.. Oh and by battery life i don't mean like upkeep time i mean like basing it on screen on time like what roms can get 4+hours screen on time?
Cheers
stock rom 4.04
Oh and what kernel is better for Rascream rom Trinity or Matrix cause i don't really know much about rascream as i just started using it.
I'm able to squeeze over four hours of screen on time from most ROMs providing I don't reboot and minimise my modem usage. I'm currently using Pete Alfonso's Gingerbread kernel and Blandriid 2.3.7.
But I keep trying alternatives...
Yeah Atm i'm using latest Rascream with TEUV kernel and not sure atm but battery seems okay?
The biggest battery eater is the screen so try brainmaster's black cm9. It's about the only thing you can do apart from obviously keeping your screen brightness at minimum is put your phone in airplane mode when feasible. Nothing else will make much difference.
For GB i have to say, Oxygen 2.3.2 with Matr1x 11.0
As for ICS, i've yet to come across one, I do, however have fond memories of aosp+
To supplement bedalus' post: to base battery life on kernel+rom combination alone does not tell much of a story. I got the most out of my battery when I - used a pure black and static wallpaper, turned off auto brightness and manually tuned down to 10%-ish, kept apps and processes at a minimum (reduced app drawer to a single page, mostly stock). To reiterate, kernel+rom alone give few tangible differences when comparing battery life, from personal experience.
I use Matrix Kernel v19 and CyanogenMod v7. 24 hrs with light use, 12 hrs with heavy use.
used to use milestone 4 with air kernel.
use the latest version of both rom and kernel and set 200-1000.
you will see the difference and if you want to save more battery after following as above, then reply me.
I haven't really noticed a difference between ROMs. As stated a few posts above, the kernel and ROM themselves will only give a few minor boosts. Black vs white screens makes a world of difference. I use the inverted browser a lot and a majority of my apps tend to have dark themes which I personally prefer. Daily use, 3 or so hours of screen on time with the phone off the charger for 12-14 hours. It all varies on how I use my phone though on that particular day.
Im running Viper XL and the reason i flashed it is because i heard it has above average battery life, but im getting maybe 10-13 hrs max. I've heard cases of 24 hr battery life, and I cant seem to achieve it. I am running Beast Mode Kernel and have the powersave governor. I am running Stock CPU frequency and have one core active. Am I missing something, because i got better battery life on paranoid android which kind of suprised me.
You really have to drill down on the tweaking and settings. Took me a bit to get what I wanted as well. I completely shut off Google Now, you can toggle off LTE and surprisingly, I raised my min cpu frequency to 594 and ondemand. Shut off HTC powersaver as well. Try a reboot after you tweak up all your settings. I think battery life was better on 2.4.1 but it's pretty well on 3.1 too.
Sent from my HTC One XL using Tapatalk 2
Viper Xl
Alphacall2 said:
Im running Viper XL and the reason i flashed it is because i heard it has above average battery life, but im getting maybe 10-13 hrs max. I've heard cases of 24 hr battery life, and I cant seem to achieve it. I am running Beast Mode Kernel and have the powersave governor. I am running Stock CPU frequency and have one core active. Am I missing something, because i got better battery life on paranoid android which kind of suprised me.
Click to expand...
Click to collapse
I'm assuming you're running ViperXL 3.1. In that case, I'm surprised you're seeing such poor battery life. But, usage and settings are everything. Things like Google Now and GPS are major battery hogs. Facebook, Google+ and other push applications can also hamper battery life. Check your background sync frequencies! How long is your screen running? At what brightness? etc.
That being said, what strikes me is your kernel. You should not be using Beat Mode Kernel (last I checked it's not even optimized for the latest android version). I recommend you use the stock ViperXL kernel or Elemental v1.5.
I've ran ViperXL 3.1 yesterday with elemental v1.5 for more than 24 hours, 3 hours screen time while syncing 3 e-mail accounts. YMMV but with proper set up it's definitely possible.
Give us more information about your usage!
Alright, thanks for the information on the kernel, its a shame because i heard good about it. But as my screen time i run low brightness and im pretty heavy on texting, I used LTE for about 40 mins total today. can you tell me the way you disabled google now? I've been tweaking the settings a bit and i guess i just havent found my sweet spot.
Edit: And im running 2.4.1 actually sorry should of put that in first post.
Complaining about 13 hours of battery life. O__o
Sent from my Nexus 7 using Tapatalk HD
Not a complaint! I'm Just saying i've heard of better
Battery life is a very elusive thing. There are simply too many variables. For every ROM, radio, etc. where people will say they have much better battery life, you will almost certainly find others that have worse. Its just a fact of life with modding phones.
I've gotten about a day and a half on a single charge ever since the phone was released, and over 48 hours with later firmware versions (stock and custom ROMs) as of 2.2X and newer. Some folks can't even get through a half a day.
Alphacall2 said:
Not a complaint! I'm Just saying i've heard of better
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Click to collapse
CleanRom 5.1 might get a little better, but I've had about the same battery life using Viper XL 3.1. A lot of the other things to look at are certain apps that seem to cause a lot of drain (depending on options). The most frequently mentioned are: Google Now, Facebook, and Maps. Other than that, lower brightness and shutting off LTE are the next biggest contenders.