Just wondering in everybody else's experience which kernel they find to be the best as far as battery life and performance goes. I've only seen 3 kernels for 4.4.2 being leankernel dkp (I believe that's the name of it) and ktweaker. Also what settings you found to be the best for you (governors, undervolting settings, overclocking settings, Etc.) I do a lot of facebooking but that's about it. So I guess let the discussion begin? I'm running the latest update of cm11.
Kernel are fone depended. Wat works for some ppl might not work for othets. Try them all out let them run couple days then u can decide which is better for you.
BMS and KT747 also have 4.4 versions
Best is subjective. Here's my subjective approach, so caveat emptor, take what I say as personal belief and not a professional benchmark testing...
For AOSP-based roms, here's what my experience is:
Lean: Easiest and simplest of the kernels. Has limited governors, but the tweaked InteractiveX is pretty effective at doing what you need. It also has a crapton of S3 specific tweaks to improve battery life. You can overclock to 1.72 (I believe...) Downside? The min frequencies are 384k, which means other kernels can go into a deeper sleep. The TCP algorythms are limited too, so choose 'reno'.
DKP: I love this kernel, but several people report it doesn't work for them. This kernel has a ton of governors, with 'freelunch' and 'asswax' being the best. There are also a lot of TCP algorythms (choose 'yeah' for best performance). You can overclock to something ridiculous like 2.1... but I keep it at 1.62; there's also deep sleep frequencies down to 54k (yes... 54000), but I tend to stay at108k. The downside? Some people can't get this kernel to work on their device and it doesn't have some of the battery saving tweaks Lean does.
KT: This is kind of the 'go to' for many people, because it has a standalone app that flashes in the process and the dev is pretty active with the S3 version here. Many of the same features of the previous two, but different governors and nothing that's a device-specific tweak; the kernel is developed for multiple devices.
BMS: This, to me, is a similar kernel to KT and was my go-to for 4.3 roms. I haven't used it in a while, so I can't speak to if it offers more governors and customization.
My take and choice?
Lean and DKP offer the best battery and performance than the rest; they seem to give the same performance, so really you can use either and be happy. I find KT and BMS to be sluggish (even with tweaking) on 4.4 roms AND they don't seem to put the device into the sleep I want it to for battery savings.
BUT... If you're flashing Gummy, give the stock kernel a try! It's the only AOSP-based rom that doesn't use the Cyanogenmod kernel and you can actually get some good performance out of it. I flash DKP over Gummy, but I also flash Lean some times.
beepea206 said:
Best is subjective. Here's my subjective approach, so caveat emptor, take what I say as personal belief and not a professional benchmark testing...
For AOSP-based roms, here's what my experience is:
Lean: Easiest and simplest of the kernels. Has limited governors, but the tweaked InteractiveX is pretty effective at doing what you need. It also has a crapton of S3 specific tweaks to improve battery life. You can overclock to 1.72 (I believe...) Downside? The min frequencies are 384k, which means other kernels can go into a deeper sleep. The TCP algorythms are limited too, so choose 'reno'.
DKP: I love this kernel, but several people report it doesn't work for them. This kernel has a ton of governors, with 'freelunch' and 'asswax' being the best. There are also a lot of TCP algorythms (choose 'yeah' for best performance). You can overclock to something ridiculous like 2.1... but I keep it at 1.62; there's also deep sleep frequencies down to 54k (yes... 54000), but I tend to stay at108k. The downside? Some people can't get this kernel to work on their device and it doesn't have some of the battery saving tweaks Lean does.
KT: This is kind of the 'go to' for many people, because it has a standalone app that flashes in the process and the dev is pretty active with the S3 version here. Many of the same features of the previous two, but different governors and nothing that's a device-specific tweak; the kernel is developed for multiple devices.
BMS: This, to me, is a similar kernel to KT and was my go-to for 4.3 roms. I haven't used it in a while, so I can't speak to if it offers more governors and customization.
My take and choice?
Lean and DKP offer the best battery and performance than the rest; they seem to give the same performance, so really you can use either and be happy. I find KT and BMS to be sluggish (even with tweaking) on 4.4 roms AND they don't seem to put the device into the sleep I want it to for battery savings.
BUT... If you're flashing Gummy, give the stock kernel a try! It's the only AOSP-based rom that doesn't use the Cyanogenmod kernel and you can actually get some good performance out of it. I flash DKP over Gummy, but I also flash Lean some times.
Click to expand...
Click to collapse
By far the most in depth reply I've ever gotten on anything on any forums. I'll definitely give dkp a try with your suggestions, and I'll give that Rom a try as well when I get home on Sunday thank very much the reply
Backup, flash and find out.
Sent from my SCH-I535 using xda app-developers app
Travisholt92 said:
By far the most in depth reply I've ever gotten on anything on any forums. I'll definitely give dkp a try with your suggestions, and I'll give that Rom a try as well when I get home on Sunday thank very much the reply
Click to expand...
Click to collapse
Anytime, man. I'm ADD when it comes to roms and kernels, so I'm constantly changing them, but I really like the DKP/Gummy combo. FYI, if you're going to flash Gummy, get the 1/15 build... it's the one I'm on and is the most stable as of late.
I also recommend using the TricksterMOD app from the Play Store. It allows you to modify every feature the kernel will allow and can set on reboot.
Let me know if you want to know what my settings are in Trickster... I have it pretty dialed-in to solid performance and battery life.
Oh and as flyest said... nandroid, THEN flash. You should probably wipe dalvik and cache too. You don't have to, but I've had some bootloops before when I didn't.
beepea206 said:
Anytime, man. I'm ADD when it comes to roms and kernels, so I'm constantly changing them, but I really like the DKP/Gummy combo. FYI, if you're going to flash Gummy, get the 1/15 build... it's the one I'm on and is the most stable as of late.
I also recommend using the TricksterMOD app from the Play Store. It allows you to modify every feature the kernel will allow and can set on reboot.
Let me know if you want to know what my settings are in Trickster... I have it pretty dialed-in to solid performance and battery life.
Oh and as flyest said... nandroid, THEN flash. You should probably wipe dalvik and cache too. You don't have to, but I've had some bootloops before when I didn't.
Click to expand...
Click to collapse
I've only had issues like that when trying to flash anything my girlfriend's phone. However as far as trickster goes I can't afford the donation version at the moment.
What about I/o scheduler?
Travisholt92 said:
I've only had issues like that when trying to flash anything my girlfriend's phone. However as far as trickster goes I can't afford the donation version at the moment.
Click to expand...
Click to collapse
Don't even bother with the donation version... you can do everything you need with the free one.
As for I/O... you'll hear various claims that one is better than the other, but I stick with ROW. For the memory our device has 'Read Over Write' is the best scheduler you'll get with these kernels. FIOS is really the best, if you can find it, but ROW is what I stick with.
This may help clarify... or confuse you more lol http://timos.me/tm/wiki/ioscheduler
beepea206 said:
Don't even bother with the donation version... you can do everything you need with the free one.
As for I/O... you'll hear various claims that one is better than the other, but I stick with ROW. For the memory our device has 'Read Over Write' is the best scheduler you'll get with these kernels. FIOS is really the best, if you can find it, but ROW is what I stick with.
This may help clarify... or confuse you more lol http://timos.me/tm/wiki/ioscheduler
Click to expand...
Click to collapse
Alright what are those settings then lol
Travisholt92 said:
Alright what are those settings then lol
Click to expand...
Click to collapse
In my opinion, I found that leankernel is the best for battery saving/performance without tweaking...
buhohitr said:
In my opinion, I found that leankernel is the best for battery saving/performance without tweaking...
Click to expand...
Click to collapse
I like tweaking though
Travisholt92 said:
Alright what are those settings then lol
Click to expand...
Click to collapse
Here's only stuff I tweak.
SETTINGS:
TCP: 'yeah'
CPU FREQUENCY: min - 108000 / max - 1620000
GOVERNOR: freelunch
SPECIFIC:
Force Fast charge: YES.
Multicore Power Saving: 1
MPU Voltages: Press minus once for -25. Note that this may cause a 'wake lag' with the screen, so revert to 1150 @ the 1.512 frequency if you have issues.
I also tick the box for 'kernel settings' on reboot, so the app overrides other settings that are in effect @ boot.
beepea206 said:
Here's only stuff I tweak.
SETTINGS:
TCP: 'yeah'
CPU FREQUENCY: min - 108000 / max - 1620000
GOVERNOR: freelunch
SPECIFIC:
Force Fast charge: YES.
Multicore Power Saving: 1
MPU Voltages: Press minus once for -25. Note that this may cause a 'wake lag' with the screen, so revert to 1150 @ the 1.512 frequency if you have issues.
I also tick the box for 'kernel settings' on reboot, so the app overrides other settings that are in effect @ boot.
Click to expand...
Click to collapse
How do I change the tcp
In Trickster, TCP is at the very top of the 'Settings' window and should be a drop down menu.
beepea206 said:
In Trickster, TCP is at the very top of the 'Settings' window and should be a drop down menu.
Click to expand...
Click to collapse
Not there on the version I have
Travisholt92 said:
Not there on the version I have
Click to expand...
Click to collapse
In Trickster, under general, the first option on very top "TCP congestion control"...
buhohitr said:
In Trickster, under general, the first option on very top "TCP congestion control"...
Click to expand...
Click to collapse
Thank you very much
I've always used Lean Kernel for touchwiz and aosp roms. Very battery friendly and over clockable. I also like DKP for touchwiz. DKP has TricksterMod support and I believe Lean Kernel does as well. But if the rom has performance in the settings menu of the rom I use that instead.
Thanks to beepea206... I'm now getting 20+ hours of battery life off of one charge... I'm not changing a thing
Related
For the people that want overclocking, here is your chance. I took my standard voodoo kernel, and put in the stuff needed to overclock it. Thanks to nemesis2all and his OTB kernel from the Fascinate for the code needed to get this to work. Also, use extreme caution when using the higher clock speeds. The stock "max" voltage for the CPU is 1300mv, and 1500MHz and 1600MHz are both at 1500mv, so it's heavily over-volted at the top end. By default, the system will boot to 1000MHz and you need to set the speeds you want in Voltage Control App. I don't personally use this because I think overclocking is useless, so any bug reports need as much information as possible, or they will be dismissed and not looked into at all. If you run into an issue with the system locking up, odds are that you have undervolted to much for a given clock speed. Other than that, you're on your own. Same FAQ applies as the regular PBJ kernel, so look there until I get a chance to post it here as well.
Installation Instructions:
1. Download zip
2. Transfer to SDCard
3. Reboot into recovery, you'll need to have CWM if you don't already
4. Install zip from SDCard and select the zip you downloaded.
5. Reboot and enjoy
0808
Make logcat an option that can be turned on/off
-From root shell, run "logcat-enable" to turn logcat on, "logcat-disable" to turn it off
Make /preinstall partition swap space
Fix problem with rooting phone on boot
Fix fix_permissions in recovery
Update to recovery
0731
Fix mount USB Storage in recovery
0730
Updated CWM binary
Custom boot animation support
0709
Voodoo Sound V10
0615
Overclocking - Use Voltage Control App to adjust clocks and voltages
0602
Voodoo Sound fixed - Thanks supercurio
Removed OnDemand
Added FIFO and BFQ IO Schedulers
Added tun.ko and cifs.ko
0531
Initial release, built from source
Undervolted
Voodoo lagfix available - Thanks supercurio
Updated compiler flags
Linaro Toolchain for cross-compiling
Battery hack to allow for non-OEM Batteries - courtesy of SirGatez
init.d support
SDCard speed tweak (via init.d script)
Upstream EXT4 Patches
VFAT Patch
TCP and CFS Tweaks to help data/performance
V(R) IO Scheduler
Auto-root on boot
Maybe missing some other stuff, check Github for full changes
TODO (somewhat in order of importance):
Smooth out boot animation
NOTES:
If you are experiencing problems, I need detailed info to be able to fix it or help you out. Failure to provide detailed info will mean I'm just going to ignore your problem as user error. Details would be something such as which kernel you are flashing (filename) and steps to reproduce the issue. Also, if you used any other kernels that had the same problem or didn't have the problem.
DISCLAIMER
By downloading and using the kernels, this signifies that you have read this full post and the FAQ before reporting an issue. You also take all responsibility if your phone breaks or your warranty becomes void (which, if you're flashing this, it already is). I offer no guarantees as to anything working, though I try not to release broken stuff, it happens sometimes.
FAQ Placeholder
2k+ on quadrant @ 1.4ghz... Niiiiice
Thanks imnuts
Undervolted and running ok so far.
Sent from my SCH-I510 using XDA App
Could you cuties advise on what sort of settings you're using for this?
I'm using the 'vr' setting with an Interactive governor at 1.1GHz and my phone is slowing to a crawl so it's hardly usable. I'm not looking for any crazy overclocking just something to keep my phone snappy whilst I keep in touch with my prostitutes and be sure they are working the proper street corners.
The weird thing is I'm not sure if Voodoo Lagfix is enabled. Voodoo control says yes, CWM says no and won't let me enable it that way, is there a way to be sure?
Spanks!
ZeppelinJ0 said:
The weird thing is I'm not sure if Voodoo Lagfix is enabled. Voodoo control says yes, CWM says no and won't let me enable it that way, is there a way to be sure?
Spanks!
Click to expand...
Click to collapse
Go into a Terminal Emulator on the device and type Mount. 3rd or 4th row on the list should show ext4. If it does then lagfix is enabled. If you do not see Ext4 and it says rfs still then it is not enabled.
will2live said:
Go into a Terminal Emulator on the device and type Mount. 3rd or 4th row on the list should show ext4. If it does then lagfix is enabled. If you do not see Ext4 and it says rfs still then it is not enabled.
Click to expand...
Click to collapse
Well it's definitely enabled. I just must have set the CPU settings poorly because this thing is crawling right now, I can't even scroll through the app drawer!
I've been trying to CWM back to the other PBJ kernels however my phone hangs on reboot, I'm guessing because those need to be flashed with Odin.
asenduk said:
2k+ on quadrant @ 1.4ghz... Niiiiice
Thanks imnuts
Click to expand...
Click to collapse
I wish I knew what I was doing wrong.. running at 1.4 and my quadrant scores are exactly the same.... not that it really matters but still...
imnuts said:
. I don't personally use this because I think overclocking is useless.
Click to expand...
Click to collapse
Just curious as to why you think it's useless. I am sure you know some thing that I don't so your opinion matters to me. I love the fact that I can overclock, but if it's not needed then I might not bother. I know it did make a difference for my DX.
das7771 said:
Just curious as to why you think it's useless. I am sure you know some thing that I don't so your opinion matters to me. I love the fact that I can overclock, but if it's not needed then I might not bother. I know it did make a difference for my DX.
Click to expand...
Click to collapse
Use a program like CPUSpy that shows you the clock speed stats of your phone. >75% of the time, it will likely be in 400MHz or less, this probably approaches >90% if you say 800MHz or less, especially if you are not a heavy user. At that point, why overclock your phone? To get the overclocking stable, you need increase voltages across the board, and despite undervolting, you'll never get the same power usage as you can with a non-overclocked kernel as some of the voltage changes you can't revert. My opinion is that while overclocking can smooth some stuff out, for most day-to-day usage, it has no practical benefits and only causes more battery drain than you would otherwise have. Given how precious battery life is these days, why knowing make your battery drain faster?
it's funny you say that becuase i noticed with ludeboy's kernel that when overclocking system panel very rarely showed my phone running over the stock speed. Usually it was as you stated some where around 800mhz..I understand what your saying...Thanks for the quick response.
So what if we run stock clock...but undervolt? Do you think we will see any batt savings?
Backup SD and app data b/c crashing/freezing can corrupt files.
Edit: Also keep Voltage Scheduler Remover on your phone just in case.
1600
1500
1400
1300 -0
1000 -25
800 -50
400 -75
200 -100
100 -150
"interactive" was unstable a couple kernels ago so I haven't tried it.
suzook said:
So what if we run stock clock...but undervolt? Do you think we will see any batt savings?
Click to expand...
Click to collapse
Potentially, yes, but you may lose stability.
Awesomeness
I love it. I can deal with a slightly shortened battery life. I wanted to OC because a lot of the more intense games don't run as smooth as I would like. With OC, its all butter. Thanks!! I have mine set at 1400, and it really didn't improve my quadrant scores, but there's a noticeable decrease in lag going from one app to another.
suzook said:
So what if we run stock clock...but undervolt? Do you think we will see any batt savings?
Click to expand...
Click to collapse
You would see better battery life at stock clock speeds if you just used the standard (ie. not overclocked) kernel I built.
Just wondering if you're going to branch off development of PBJT w/o overclocking separately - or if this is going to be built/rolled into future releases?
I'm on board with not thinking it's necessary - though I can see how the tinkerers and speed demons would love it. (And all the more power to them, literally)
I don't know imnuts, I always noticed when I forced the phone into a higher overclock it always seemed quite a bit snapier.
Keep it on conservative. Interactive is buggy.
ZeppelinJ0 said:
Could you cuties advise on what sort of settings you're using for this?
I'm using the 'vr' setting with an Interactive governor at 1.1GHz and my phone is slowing to a crawl so it's hardly usable. I'm not looking for any crazy overclocking just something to keep my phone snappy whilst I keep in touch with my prostitutes and be sure they are working the proper street corners.
The weird thing is I'm not sure if Voodoo Lagfix is enabled. Voodoo control says yes, CWM says no and won't let me enable it that way, is there a way to be sure?
Spanks!
Click to expand...
Click to collapse
underscored said:
Just wondering if you're going to branch off development of PBJT w/o overclocking separately - or if this is going to be built/rolled into future releases?
Click to expand...
Click to collapse
This will remain separate from the standard kernel most likely. I will see if I can build off of this source without overclocking and have it work, though I don't know if it will. I want to keep them separate for stability and battery life reasons.
I'm really very happy with my Nexus S 4G. It's unlocked and rooted, but otherwise pure stock and I really like it that way.
Coming from the Hero it's a pleasure to have a phone that doesn't require heavy modification to make it perform properly. Still, I miss the thrill of flashing ROM's and kernels.
I would like to try a kernel...mainly to simply o/c a bit, but I don't want it to suffer stable and reliable operation. I recall with the Hero, some of the kernels would adversely affect things like the GPS, making it something I couldn't rely on.
So my question: what kernel can I use that is uncapped, but will otherwise be as close to stock as possible?
Thanks for your thoughts!
Kernels are pretty different over here. I don't even know what's closest to stock. They pretty much all have mods in them. Matr1x kernel is pretty popular. You may have to up the voltage for it if you oc to 14xx. 1200 seemed pretty stable to me with default voltages. Currently franco kernel is pretty popular. You can't oc it, but it seems pretty snappy without oc. GLaDOS is also being used a bit but i've read some mixed reviews and for me at least it did seem a little lagging at times for the short period I ran it. I tried Trinity kernel when I first moved over from the hero and it seemed kind of flaky though it's possible that could have been due to the kang I was running. There are a few others out there. Cm7 kernel has a lot of the same mods cooked in though it's likely not the latest updates. You will see a lot of mention of BLN and Voodoo. There are apps on the market for those features and there's an app nstools that has some kernel config settings you can adjust depending on kernel. Mainly just try to read a lot. Most of the roms and kernels haven't given me any major issues beyond the random reboot, which coming from the hero, just means "normal" lol.
Sent from my Nexus S 4G running CM7/franco.Kernel
Once you flash you can't stop O_O that my experience i'll direct you to Peteralfonso's kernel on his website here
Searching the forums would help you more than anything. You will get more info by searching, rather waiting people to reply here. These questions are asked on daily basis. And get the same replies everyday. I don't sound to be mean but seriously there is more info than you can get by starting another thread, only thing is you need to dig the info.
I have tried a few different roms and kernels and for once cm7 runs perfect for me w the supplied kernel. No reboots. Has been stable at 1440 performance for testing but I usually leave it at 1000 on demand.
Yeah they all have this blinking light crap in it now by default which I hate, and the lights turn off and I don't like that either. I want the light on when I'm using the phone and off when I'm not, not the other way around!
Sent from my Nexus S using XDA App
I like the bln mod, but I do not like the one that turns off the backlights when using the phone. It's just easier to use the buttons imo and gives a quicker visual reference for everything. Otherwise I mostly am left wondering what is up with all the black space.
Sent from my Nexus S 4G running CM7/franco.Kernel
suhas_sm said:
Searching the forums would help you more than anything. You will get more info by searching, rather waiting people to reply here. These questions are asked on daily basis. And get the same replies everyday. I don't sound to be mean but seriously there is more info than you can get by starting another thread, only thing is you need to dig the info.
Click to expand...
Click to collapse
I hear you on that, and spent a lot of time reading comments and concerns and problems about the various kernels available. They all seem to pretty much be experimental, with various idiosyncratic problems and lots of bells and whistles such as aforementioned BLN, Voodoo, deep idle, etc.
I thought maybe I was missing something in my search for a kernel that would allow o/c, but not have the stability concerns of a the feature-rich, highly customizable kernels.
I think the Matr1x kernel will be your best option, u can OC it till 1400mhz, what I don't recommend to do, but at 1200/1300mhz its pretty stable.
It also got many options like BLN, BLX, Live OC, touch wake, etc.
But if you don't want them, why you just don't use 'em?
Like just flash the kernel and keep it like it is, and maybe do some overclocking.
wanna stable ? stock kernel
basically , there is no kernel more stable then stock ...
qtwrk said:
wanna stable ? stock kernel
basically , there is no kernel more stable then stock ...
Click to expand...
Click to collapse
True, but he prefers to OC it a bit.
Sent from my Nexus S
franciscofranco's kernel (link) works best for me. It's fast (no lags even without OC, I'm running at stock 1000 MHz), reliable (I've been using it for at least month and I haven't got any random reboots or application hangs) and battery efficient (thanks to deep idle and other tweaks).
irizwan said:
Once you flash you can't stop O_O that my experience i'll direct you to Peteralfonso's kernel on his website here
Click to expand...
Click to collapse
+1
Never found a more stable kernel than Pete's. However, I've been on Glados for the last week or so and am seeing excellent battery life with Deep Idle.
Icecoldmeat said:
True, but he prefers to OC it a bit.
Sent from my Nexus S
Click to expand...
Click to collapse
personally i think overclock is totally unnecessary , why ? 1 GHz is sufficient to handle all job you require to the phone...
Best thing to do would be compile your own stock kernel with oc.
qtwrk said:
personally i think overclock is totally unnecessary , why ? 1 GHz is sufficient to handle all job you require to the phone...
Click to expand...
Click to collapse
True again. I love 1100mhz because it gives you a bit more speed with no lagg, and you batterylife is still awesome.
Sent from my Nexus S
deville~> said:
franciscofranco's kernel (link) works best for me. It's fast (no lags even without OC, I'm running at stock 1000 MHz), reliable (I've been using it for at least month and I haven't got any random reboots or application hangs) and battery efficient (thanks to deep idle and other tweaks).
Click to expand...
Click to collapse
with deep idle OFF, the difference between the two is minimal, idle stats displayed deep idle has been 0
Downloaded and testing peter alfonso's kernel now. Its very minimalistic, no options like deep idle etc, and u can OC it up to 1400mhz. Running 400-1100mhz for a day now and the battery life is just awesome.
U can find it on:
http://www.peteralfonso.com
Sent from my Nexus S
albundy2010 said:
Best thing to do would be compile your own stock kernel with oc.
Click to expand...
Click to collapse
Or one with LiveOC which is kinda better cause it also OC the GPU =D
+1
Click to expand...
Click to collapse
the akward moment when someone said they +1'd you but actually didn't -_-
there're too many to choose.i don't like the ones that update so often indeed.
Whenever I use the built-in Processor manager in CM9 (our CM9) and whenever I change the maximum MHz or the governor everything is fine. However when I'm using some apps such as browser it will soft boot in some times, not rarely but occasionally.
Is this normal? If it is then is SetCPU for Root Users worth buying to use for our phone (it looks very neat and has profiles too!)? If it is not then how will I manage my problem?
Would you point me to the "Processor manager" you are talking about? I didn't know CM9 had one!
Which build of CM9? Have you installed any other kernels or tweaks?
It is not normal in my experience with Team Acid / Hefe Kernel to have unexpected reboots.
What are you trying to manage with the app and when? That may impact the choice.
I use System Tuner (Pro) and find it does what I need. Then again, I don't change settings once I've got a kernel dialed in.
Posted from my SGS4G, thanks to Team Acid development
jeffsf said:
Would you point me to the "Processor manager" you are talking about? I didn't know CM9 had one!
Which build of CM9? Have you installed any other kernels or tweaks?
It is not normal in my experience with Team Acid / Hefe Kernel to have unexpected reboots.
What are you trying to manage with the app and when? That may impact the choice.
I use System Tuner (Pro) and find it does what I need. Then again, I don't change settings once I've got a kernel dialed in.
Posted from my SGS4G, thanks to Team Acid development
Click to expand...
Click to collapse
In "Settings" under "Performance", then go to "Processor". Once there you will see some settings pertaining to the processor.
Build R8, no tweaks or custom kernels.
So will SetCpu for root users app work for our phone?
th3controller said:
So will SetCpu for root users app work for our phone?
Click to expand...
Click to collapse
It did for GB. Haven't tried it on ICS. Jeff mentioned System Tuner above and I couldn't agree with him more. It's the only app I use for setting OC/UV as well as I/O schedulers. Try the free version first. It does everything though. SO if you like it kick down for the paid version.
I have used setCPU since I bought it way back when. It works. Jeff's the man though I might have to switch just because lol.
TwitchyEye said:
Jeff's the man though I might have to switch just because lol.
Click to expand...
Click to collapse
What am I chopped liver? llol jk. Jeff is indeed a great resource to have around.
TwitchyEye said:
Jeff's the man
Click to expand...
Click to collapse
Cedric's the man -- the author of System Tuner Pro. His support has been beyond expectations. I'm very picky about what I pay cash for. His pride in his products and quick, intelligent responses has more than earned the relatively small price that he asks for his "Pro" versions. Past that, he doesn't overly "cripple" his ad-supported versions.
I've never tried SetCPU, but I know many people have had great success with it.
Many of the "tweaks" are governor-specific. Most "reasonable" programs work through the exposed "sysfs" entries that allow one to read/set parameters of the kernel. In this case, the governor, governor parameters, and the voltage table.
I actually experience the same problem with the soft reboots after switching to CM9
So the answer is yes, set cpu will work for our ice cream sandwich phone?
Cause I will buy it now.
Seems to be working fine... For now, when I first tried to set clock settings at:
Min: 200 MHz
Max: 1200 MHz
Governor: SmartAssV2
I/O Scheduler: Deadline (Jeff what scheduler do you suggest? Or is Deadline fine?)
After these settings were put in effect, I went back to the home screen, the screen froze with a weird effect. I had to do a battery pull, rebooted phone and tried to reapply settings again. It worked and I'm going to report back if weird stuff happens.
th3controller said:
Jeff what scheduler do you suggest? Or is Deadline fine?
Click to expand...
Click to collapse
I've stayed out of the scheduler fray as much as I can. From what I have read, there is a very significant difference between them when you have spinning disks. I've also read that the ones that work well for spinning disks aren't so good for flash media. I've heard that there is a new one in the works for mainline Linux (FIOPS), but it is far from production quality. Not clear how any of them interact with Samsung's umm, well, "unique" approach to managing flash -- we're neither an SSD nor a raw card for internal memory. I switch between deadline and noop with the phase of the moon, and haven't personally noticed an astounding difference between them. I couldn't tell you what I have set right now.
What exactly do i get if i will flash custom kernel to my hammerhead ? What do they provide to make it noticeable to an user ?
m4nu4l said:
What exactly do i get if i will flash custom kernel to my hammerhead ? What do they provide to make it noticeable to an user ?
Click to expand...
Click to collapse
Custom kernels provide improvements, tweaks and more power to the user.
Some provide patches to use certain mods... E.g. Multirom patched kernels
Others allow your phone to be overclocked and undervolted. (Both CPU & GPU)
Some just save more battery than others, some have display tweaks included allowing the user to copy Samsung's saturated screens or even lower saturation.
Remember, not all kernels are compatible with all roms.
Read on the bases of the roms and kernel compatibility!
Happy flashing and good luck!
Valdorous said:
Custom kernels provide improvements, tweaks and more power to the user.
Some provide patches to use certain mods... E.g. Multirom patched kernels
Others allow your phone to be overclocked and undervolted. (Both CPU & GPU)
Some just save more battery than others, some have display tweaks included allowing the user to copy Samsung's saturated screens or even lower saturation.
Remember, not all kernels are compatible with all roms.
Read on the bases of the roms and kernel compatibility!
Happy flashing and good luck!
Click to expand...
Click to collapse
Thanks for the explanation, feels like i'm not the guy who would need to overclock my nexus 5, its fast enough for me out of the box. Multi-rom sounds attracting tho.
Stock kernel works just fine
Sent from my Nexus 5 using XDA Premium 4 mobile app
m4nu4l said:
Thanks for the explanation, feels like i'm not the guy who would need to overclock my nexus 5, its fast enough for me out of the box. Multi-rom sounds attracting tho.
Click to expand...
Click to collapse
One thing I forgot to mention are also the sound tweaks!
There are a LOT out there that are really good, although the App Viper4Android will always reign superior!
I do recommend you have a look at some of the kernels.
You can get 150% out of your battery with the right rom/kernel combo and probably more if you sacrifice some performance.
Just saying it's something a lot of people don't experiment with, I personally am a flash-aholic and need to flash new kernels and roms every other day!
Valdorous said:
I do recommend you have a look at some of the kernels.
You can get 150% out of your battery with the right rom/kernel combo and probably more if you sacrifice some performance.
Click to expand...
Click to collapse
not true.
battery life is dependant on how you personally use your phone, how you set it up, what apps you use, and the quality of your phone/data connection. everything else, including kernels, play a very minor role in battery.
simms22 said:
not true.
battery life is dependant on how you personally use your phone, how you set it up, what apps you use, and the quality of your phone/data connection. everything else, including kernels, play a very minor role in battery.
Click to expand...
Click to collapse
Not necessarily, depending on the govenor (that comes with the kernel) your phone can idle better and some kernels have adjustments to the LMK (LowMemoryKiller) which handles background apps differently.
So in my opinion with the same usage and different handling of background apps, including undervolting and a battery saving governor.
You could easily hit 150% of the usual battery life,
Kernels play in that matter a HUGE role.
You could even throw in some display tweaks (in the battery's favour).
Valdorous said:
Not necessarily, depending on the govenor (that comes with the kernel) your phone can idle better and some kernels have adjustments to the LMK (LowMemoryKiller) which handles background apps differently.
So in my opinion with the same usage and different handling of background apps, including undervolting and a battery saving governor.
You could easily hit 150% of the usual battery life,
Kernels play in that matter a HUGE role.
You could even throw in some display tweaks (in the battery's favour).
Click to expand...
Click to collapse
first off, your "battery saving" govornor doesnt exist. it would depend on exactly what you are doing with the phone. the governor doesnt save battery, it tells your cpu how to behave with the incoming need. and they dont control how your phone idle. i use ondemand, and i doubt many phones idle better than mine.
undervolting DOES NOT save you battery, it can even use more than if not undervolted. the only benefit you will get from undervolting is a little less heat.
and again, kernels do not play a role in battery. if they did, every single person would be using the same battery saving kernel. but we are not. with every single kernel someone will have great battery, and someome will have terrible battery. that's because how ypu use it and your quality phone/data connection pre-decides what your battery will be like.
what you are believing are rumors. stuff people dont really know much about, but still keep repeating the non truth over and over. in reality, kernels have almost no influence in battery.
and btw, everything you can control with a custom kernel, you can with the stock kernel. and people get just as great battery on stock than on a custom kernel.
and yes, i do know what im talking about, ive been part of trinity kernel for 5 years now. and ive helped thousands with android and android related issues, including battery.
simms22 said:
first off, your "battery saving" govornor doesnt exist. it would depend on exactly what you are doing with the phone. the governor doesnt save battery, it tells your cpu how to behave with the incoming need. and they dont control how your phone idle. i use ondemand, and i doubt many phones idle better than mine.
undervolting DOES NOT save you battery, it can even use more than if not undervolted. the only benefit you will get from undervolting is a little less heat.
and again, kernels do not play a role in battery. if they did, every single person would be using the same battery saving kernel. but we are not. with every single kernel someone will have great battery, and someome will have terrible battery. that's because how ypu use it and your quality phone/data connection pre-decides what your battery will be like.
what you are believing are rumors. stuff people dont really know much about, but still keep repeating the non truth over and over. in reality, kernels have almost no influence in battery.
and btw, everything you can control with a custom kernel, you can with the stock kernel. and people get just as great battery on stock than on a custom kernel.
and yes, i do know what im talking about, ive been part of trinity kernel for 5 years now. and ive helped thousands with android and android related issues, including battery.
Click to expand...
Click to collapse
I know and have used your kernel.
If you noticed I said "In my opinion". No reason to get aggressive.
I have noticed something else.
And thought it worth sharing.
If I've offended you, I apologize.
Valdorous said:
I know and have used your kernel.
If you noticed I said "In my opinion". No reason to get aggressive.
I have noticed something else.
And thought it worth sharing.
If I've offended you, I apologize.
Click to expand...
Click to collapse
oh gosh, please dont apologize. i also meant no offence to you.
its not you i am aggressive with btw, its that false info that just wont die. i had still many people do, but its not as bad as before. you dont need to wipe anything when flashing kernels. but, many people used to insist that its a must. i spent a lot of time fighting that falsehood, now i dont see it as much. its the same about battery. if there was a "magic" pill, everyone would be using it. but just as many people using any random kernel will get great battery life on a "battery" saving kernel, and just as many people will get bad battery life as well.
please, again, i didnt mean offence. im just trying to pass the truth around, thats all. its just that this kind of thing isnt an opinion, there is a truth and a false here. id never go against any persons opinion if it was just about opinion.
Yeah....at best....just changing from one kernel to another MAY affect your battery about 5 to 10 percent one way or the other. In other words.....the direct affect on battery is minimal.
The biggest myth in the threads are that rom/kernel combos make big differences in battery life.
Simply put, they don't.
And everything @simms22 said. ?
---------- Post added at 07:59 PM ---------- Previous post was at 07:57 PM ----------
And in modern devices anyway....undervolting does nothing but keep heat down a bit.....and under clocking has an extremely minor affect as well.
Don't believe, try it and see. ?
I get the same battery life on any ROM....any kernel.
You can make your own ultra powersaving mode or your own hyper performance mode...
I'm just using custom kernel for gamma control, s2w/s2s (which is very useful for me when reading some articles on Chrome), also for USB OTG mounting. Oh oh, and also for killing time, you know messing up with frequency and stuff lol
Well, personally I never believe about the effect on battery life by using this or that kernel since there are lots of things that can affect your battery life, and for my case data connection is the battery killer :angel:
What are you guys talking about??. No, I'm not a kernel dev BUT I have tried so many ROM's and kernels on different devices for a long time now and by experience I can say that they DO influence battery life. I have seen %~50 increase (compared to stock) and aso have experienced just 4 hours of battery because a buggy kernel patch.
They're not placebo when your device start to last 19 hours instead of just 13 like it did since you bought It.
lovetatfitties said:
What are you guys talking about??. No, I'm not a kernel dev BUT I have tried so many ROM's and kernels on different devices for a long time now and by experience I can say that they DO influence battery life. I have seen %~50 increase (compared to stock) and aso have experienced just 4 hours of battery because a buggy kernel patch.
They're not placebo when your device start to last 19 hours instead of just 13 like it did since you bought It.
Click to expand...
Click to collapse
your cpu is set up differently with the custom kernel. thats why. its not the kernel itself. you can set up your cpu on stock so itll be like the custom kernel. its very easy if you are familiar with a few scripts and the root filesystems. for example, i run trinity kernel. with the way trinity kernel sets up my cpu, i get better than stock kernel in battery. trinity set my cpu to run all four cores always on, no hotplugging. it also disables mpdecision. i can set up the stock kernel that way as well. i can do it using a root file explorer, manually, or i can do it via script. and i do know people that run the stock kernel that just get fabulous battery life.
---------- Post added at 10:21 PM ---------- Previous post was at 09:55 PM ----------
there are things that you can do with kernel control apps as well.
Sometimes when you flash a kernel...and many times we flash a ROM right before.....you are only getting rid of a battery issue you previously had before you flashed. So with the clean start, of course you're battery will be much better (especially if you had an unfixed or unnoticed issue before)....and sorry to put it this way, but don't know how else to put it....but the less knowledgeable people think its the new kernel that's made such a huge. Pretty much all the most experienced people know kernels don't make a very big difference to battery life. You can flash clean stock with stock kernel and see a huge gain too if you had an issue before.
Test it yourselves. Flash your favorite ROM and some kernel one day. Go a few battery cycles without changing much or installing much. Then flash the same ROM and another kernel. Same changes and same few apps. And so on...
Eventually you'll get the point.
KJ said:
Sometimes when you flash a kernel...and many times we flash a ROM right before.....you are only getting rid of a battery issue you previously had before you flashed. So with the clean start, of course you're battery will be much better (especially if you had an unfixed or unnoticed issue before)....and sorry to put it this way, but don't know how else to put it....but the less knowledgeable people think its the new kernel that's made such a huge. Pretty much all the most experienced people know kernels don't make a very big difference to battery life. You can flash clean stock with stock kernel and see a huge gain too if you had an issue before.
Test it yourselves. Flash your favorite ROM and some kernel one day. Go a few battery cycles without changing much or installing much. Then flash the same ROM and another kernel. Same changes and same few apps. And so on...
Eventually you'll get the point.
Click to expand...
Click to collapse
That right!
It's all about how you feel about your devices.
simms22 said:
your cpu is set up differently with the custom kernel. thats why. its not the kernel itself. you can set up your cpu on stock so itll be like the custom kernel. its very easy if you are familiar with a few scripts and the root filesystems. for example, i run trinity kernel. with the way trinity kernel sets up my cpu, i get better than stock kernel in battery. trinity set my cpu to run all four cores always on, no hotplugging. it also disables mpdecision. i can set up the stock kernel that way as well. i can do it using a root file explorer, manually, or i can do it via script. and i do know people that run the stock kernel that just get fabulous battery life.
---------- Post added at 10:21 PM ---------- Previous post was at 09:55 PM ----------
there are things that you can do with kernel control apps as well.
Click to expand...
Click to collapse
Ok man whatever, I don't like to argue about the color of the sky so.. Yeah..
Also, I think you should e-mail all the kernel devs and tell them that they're full of bs and that they all are wasting their time improving nothing. You should try to reach Linus Torvalds and tell him that he has to stop developing worthless software, that we all can mod our systems the way we want'em to behave and that we don't need support for newer technology. :good:
lovetatfitties said:
Ok man whatever, I don't like to argue about the color of the sky so.. Yeah..
Also, I think you should e-mail all the kernel devs and tell them that they're full of bs and that they all are wasting their time improving nothing. You should try to reach Linus Torvalds and tell him that he has to stop developing worthless software, that we all can mod our systems the way we want'em to behave and that we don't need support for newer technology. :good:
Click to expand...
Click to collapse
It's a good job YOU know what you're talking about, otherwise this thread would have been worthless
The point is you can do some customizations with custom kernels. Gamma control, usb fast charge, etc etc.
But battery life? I never see the difference even with the similar usage that I always do every single day, really, I'm living in Indonesia and the data connection is the battery killer that makes me swearing aaaaall the time lol
I have tried that kernel this kernel (except caf kernel), you name it, but still nothing different, except each of them has their own characteristics.
My own solution? I bought a powerbank, that's my magic pill when my phone is out of battery.
Please, don't think I'm bashing kernel devs out there, they do fantastic job with their creations and I hope they don't stop doing that, I myself using ElementalX, because I need the features that the dev offers to user like me.
Sorry if my English is that bad :/
lovetatfitties said:
Ok man whatever, I don't like to argue about the color of the sky so.. Yeah..
Also, I think you should e-mail all the kernel devs and tell them that they're full of bs and that they all are wasting their time improving nothing. You should try to reach Linus Torvalds and tell him that he has to stop developing worthless software, that we all can mod our systems the way we want'em to behave and that we don't need support for newer technology. :good:
Click to expand...
Click to collapse
Sent from my Nexus 5 using Tapatalk
First off thanks sdbags and everyone who helped make this awesome rom it really saved this tablet(tf700t) from the garbage can
As a first time user to rom flashing I do have a few questions and seeing as how the general is flooded I figured I'd make a new one in regards to the app Pimpmyrom.
If anyone can give me a hand I wanted to know if pimpmyrom is actually useful for anything on the Cromi-X rom? My battery life has always been crap and I can't seem to get it to work properly, at one point my Cooltool actually showed it skips percentages(91 jumps to 89) so I wanted to know if I were to use PMR what functions should I tick to get it to possibly save battery, currently using Ondemand governor with Row scheduler, also for anyone interested Volume+ works WAYYYYYY better than Nox or w/e was on the rom which I was surprised by. Also what should be avoided when working with PMR so as to avoid screen tearing and lags(managed to screw up and somehow ended up with screen tearing) as well as Entropy and if that setting should be changed(using Seeder or PMR) and if undervolting on the _that Kernel 1318 further would mess anything up?
Thanks sdbags and everyone again!
el estrago said:
First off thanks sdbags and everyone who helped make this awesome rom it really saved this tablet(tf700t) from the garbage can
As a first time user to rom flashing I do have a few questions and seeing as how the general is flooded I figured I'd make a new one in regards to the app Pimpmyrom.
If anyone can give me a hand I wanted to know if pimpmyrom is actually useful for anything on the Cromi-X rom? My battery life has always been crap and I can't seem to get it to work properly, at one point my Cooltool actually showed it skips percentages(91 jumps to 89) so I wanted to know if I were to use PMR what functions should I tick to get it to possibly save battery, currently using Ondemand governor with Row scheduler, also for anyone interested Volume+ works WAYYYYYY better than Nox or w/e was on the rom which I was surprised by. Also what should be avoided when working with PMR so as to avoid screen tearing and lags(managed to screw up and somehow ended up with screen tearing) as well as Entropy and if that setting should be changed(using Seeder or PMR) and if undervolting on the _that Kernel 1318 further would mess anything up?
Thanks sdbags and everyone again!
Click to expand...
Click to collapse
sbdags
You can try pimpmyrom but I took the best bits anyway - so UV, OC/UC, kernel tweaks are all included.
Be careful as you can introduce a boot-loop if you don't know what you are doing.
I'd rather you use something like trickstermod off the store.
sbdags said:
sbdags
You can try pimpmyrom but I took the best bits anyway - so UV, OC/UC, kernel tweaks are all included.
Be careful as you can introduce a boot-loop if you don't know what you are doing.
I'd rather you use something like trickstermod off the store.
Click to expand...
Click to collapse
Haha wow! sbdags!(proper now sorry!) thanks for the response! I was looking into trickster mod I honestly am just looking for a good battery w/o sacrificing too much performance. I have the _that kernal v5 1318 but is it already undervolted? and if so can it(or should it) be undervolted further?
Also my Governor is Ondemand and my i/o scheduler is Row should I change any of that? Is smartassv2 better and if I flashed it would it work on Cromi? What about SIO? sorry for all the questions just simple yes and no's is all I need except for the undervolting thing(-25,-50 or some value thats best) I haven't gotten any boot loops yet thankfully and I've always had a nandroid to be safe!
el estrago said:
Haha wow! sbdags!(proper now sorry!) thanks for the response! I was looking into trickster mod I honestly am just looking for a good battery w/o sacrificing too much performance. I have the _that kernal v5 1318 but is it already undervolted? and if so can it(or should it) be undervolted further?
Also my Governor is Ondemand and my i/o scheduler is Row should I change any of that? Is smartassv2 better and if I flashed it would it work on Cromi? What about SIO? sorry for all the questions just simple yes and no's is all I need except for the undervolting thing(-25,-50 or some value thats best) I haven't gotten any boot loops yet thankfully and I've always had a nandroid to be safe!
Click to expand...
Click to collapse
I'm sure I put UV options in the installer. You can always drop -25 and test it using trickster. That doesn't support sio or smartass although I was happy with ondemamd and row. Hunds does support those though. Reinstall over the top and try different options. You won't lose anything by dirty flashing. You can also use the kernel installer.
Good luck!