Devils vs Semaphore Kernels, OC'ing, and why? - Galaxy S I9000 Q&A, Help & Troubleshooting

Which kernels are you guys using, specifically with THS build 15? Is there noticable difference in day to day applications by flashing one of these kernels? What benefits do they offer (responsiveness)?
Also, how does overclocking effect the phones battery life, and heat output? I would assume a 300mhz overclock would produce a significant amount of heat and drain battery much quicker.
Can somebody bring me up to speed
Cheers

i heard that DEVIL 14.2 is good with cm9 build 15...... and yeah...of course.....overclocking will drain your battery muck quicker.... but u can under-volt to save battery life though undervolting stability depends on your kernel. for overclocking and undervolting glitch is better ( as far as i observed ) but personally i like devil kernel.

zamiurratul said:
i heard that DEVIL 14.2 is good with cm9 build 15...... and yeah...of course.....overclocking will drain your battery muck quicker.... but u can under-volt to save battery life though undervolting stability depends on your kernel. for overclocking and undervolting glitch is better ( as far as i observed ) but personally i like devil kernel.
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Thanks for the response! While I'm an avid PC overclocker, I don't have to worry about battery life there , I think I will keep my 1000mhz and battery duration where it is. I'll likely try the Devil's kernel just waiting on a couple more responses

Related

best kernel for froyo

Which is the best kernel in terms of battery life for the nexus one froyo. I've been using pershoots kernel, which are really great, but the battery life is poor. I need a kernel which gives great battery life or should I just use the stock.
I'm a big Pershoot fan, but you could also check out Intersect Raven's AVS kernels or Wildmonks overclocked version of IR's kernels. All three of these can be found on the first page of the Android Development thread.
It's easy to try them all out and then decide for yourself what is best for you in the tradeoff between speed, stability and battery life.

Underclocking for Battery Life?

I was thinking about doin this but I have NO idea what would be a good/safe amount to undervolt/underclock. The main reason i want to do this is to get some more juice outta my battery but I'm not sure what a good amount is. Is there a way to keep performance and overall "snappiness" of the phone about the same and still get a good gain of battery life? Also is there anyway i can damage my phone by doing this? Sorry if these are stupid questions but i wanna be safe
I'm on CM 6 RC if that makes any difference. Thanks
Anyone? Using SetCPU btw
I used an 800mV kernel for a while and had SetCPU @ 806mhz -- battery life was insane.
SetCPU doesn't make a difference in battery life, it can only shorten it. The kernal already has the best settings for CPU speed built in.
The main function of SetCPU is to overclock.
evilkorn said:
SetCPU doesn't make a difference in battery life, it can only shorten it. The kernal already has the best settings for CPU speed built in.
The main function of SetCPU is to overclock.
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Ah did not know that thank you
So with that in mind, is there any kernel you would recommend? Or am i just better off with what's already installed
Stock (cyan's) works fine for me. Try them and find out which works best for you.
Thankfully people stopped releasing their own kernals in masses... but they were replaced by winzip roms...

[Q] Benefits of OC/UV

What are the benefits of OC/UV (particularly for CM7)?
I know of improved performance due to OC, but what does UV do in regards to performance. Also, how does an OC/UV kernel compare to one without the option?
your processor doesn't need as much voltage as the stock settings--undervolting lets you save battery
personally i want to know.. do you have to UV to OC?
xredjokerx said:
your processor doesn't need as much voltage as the stock settings--undervolting lets you save battery
personally i want to know.. do you have to UV to OC?
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You can do either or both but don't have to do both. At some point UVing will cause a crash. Right before that point it can cause performance issues. See the link below for instructions on how to find an optimal UV level to maximize battery savings and performance.
http://forum.xda-developers.com/showpost.php?p=10936691&postcount=1102
OCing improves speed but can also cause stability issues. For a captivate this usually isn't a problem until you get past 1.2 ghz. After that, it depends on the kernel but I have yet to find a kernel that is completely stable past 1.2 ghz under stressful conditions. Samsung designed the processor to handle 1.2 ghz and in theory it can go up to at least 1.6.
Like everyone before me has said, OC will make your processor work more (which will eat up more battery, and send the temps a bit higher).
UV is a way to "fix" that problem by controlling the voltage used by each Mhz/Ghz range. The mini guide that QuarkGluonSoup posted is a great way to start off.
Most Captivates start have random errors past 1.2Ghz, but the highest I've seen (stable) are 1.4Ghz.
venomio said:
Like everyone before me has said, OC will make your processor work more (which will eat up more battery, and send the temps a bit higher).
UV is a way to "fix" that problem by controlling the voltage used by each Mhz/Ghz range. The mini guide that QuarkGluonSoup posted is a great way to start off.
Most Captivates start have random errors past 1.2Ghz, but the highest I've seen (stable) are 1.4Ghz.
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Odd as it sounds, my battery life on CM7 is close to 50% better when it is OC'ed to 1.2 ghz and UV'ed than it was on the froyo ROMs under the same conditions.
That really is odd :S I think I'll try it myself.

[Q] franco kernel or abyssnote

hi everybody. i've tried both kernel named in the title but, being a noob, i can't decide which one is better. can you expalin me which is more convenient to use and why it is? thanks alot
it depend on ur need, for me abyssnote.
i prefer also abbys kernel but the best solution would be to test kernels by yourself ;D
After trying both, Franco kernel, for me, is the best, no lag, smooth, good performance and great battery life.
the new franco kernel 6 in my opinion runs very smoothly. I slept through the night (7hrs) and my phone's battery didn't lose even 1% (I use Juice Defender to put my phone in flight+silent mode during the night).
I found both of the kernels very well, however I am testing out Abyss 4.0 as it has the ability for overclocking and undervolting which the Franco-kernel not yet supports. Prior I ran Franco v. 2, 4 and 6 which all were good with a better battery life than my previous Abyss-kernels (probably due to lower frequency used).
Franco is the way to go for me. It's stable, fast, and very easy on your battery. No overclocking or undervolting, though. If you are into these, chose Abyss.
Both of them are good kernel.
Been changing those kernels back and forth between new releases.
So far, I'm on Abyss.
Depends on your needs. OC go for Abyss, No OC go for Franco. Both of them have great battery life.
just tried abyssnote v4.0 final with TW recovery by koush, awesome recovery, thanks Angelom.
How do I enter recovery mode on the SGH-I717 Note? I dont have a home button I can press but instead the touch. I cant get it to reboot in recovery mode.
Try volume up and down buttons (same time) and the power..
Franco #2 is a clear winner for me in CF and Franco #2 in terms of battery life...
+1 franco v6 kernel coming from speedmod.
+1 Franco v6 with RocketRom v22. Loving it so far
BayuDroidz said:
Both of them are good kernel.
Been changing those kernels back and forth between new releases.
So far, I'm on Abyss.
Depends on your needs. OC go for Abyss, No OC go for Franco. Both of them have great battery life.
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I also prefer Abyss if you need/want OC
I tried all note.kernels and none of the.kernel up par with Franco. Not evem close
Sent from my GT-N7000 using XDA App
Franco 7 with Darkyrom 3.3. Amazing on battery life for me.
Franco's kernel no question. He is known for is fast, great battery life kernels check the nexus s and galaxy nexus. His kernels are awesome.
So what is your average battery life with the Franco kernel? I have the Abyss 4.1 right now, and it loses around 2-3% overnight and definitely can last around 1 and a half day with minimal usage.
Neither... I'm using FM kernel right now and I can surely vouch the longetivity of my Note's battery life...
2 days already with 40% battery level... 1 hr of internet, 30 mins of calls everyday.. 100 texts, emails and news feeds...
Tried Franco's kernel.. I was not satisfied with the expectant rate of my battery level dropping 3% in just a span of an hour.. I also tried AbyssNote, made a comparison with Franco's kernel, and though there is slight difference in terms of battery life, but the many issues I read on AbyssNote forum of BLN and stuffs made me wary of keeping it on my Note...
So I tried back FM kernel and made a decision not to charge it everyday (I used to charged my Note whenever and wherever I can).
Now, I am never going back to flashing another kernel again (with Franco's or with Angelom's Abyss), unless some of the issues mentioned on some users (on their respective threads) can fully be smoothen out..
Just my take.....

[Q] Battery Performance

I'm looking for a kernel and custom rom that give me a perfect balance between battery life and performance on my Nexus 6. Thanks for the help.
Bliss pop and elementalx
I use BrokenOS(personal preference, mainly for UI) and Sensei kernel for battery. Its extremely customizable and upstreams the best features and optimizations from other kernels like elementalx and Franco and the likes. He releases it a few days after (or day of) and its extremely customizable. I've used it since release 5. He's currently on release 34
BlissPop and Franco Kernel :good:
I notice significant battery improvement with ElementalX kernel over stock kernel.
first off, kernels do not give you better battery. its a huge misconception. a kernel can help you better your battery, but will not improve your battery. you can get the same improvements by messing with your cpu yourself. battery life is all about how you personally use your device, how you set it up, what kinds of apps you install, and ver much the quality if your phone/data signal. thats it. there is no magic pill(kernel) that you can take to improve your battery life. if you want better battery life, keep away from terribly written apps, and apps that drain your phones resources.
simms22 said:
first off, kernels do not give you better battery. its a huge misconception. a kernel can help you better your battery, but will not improve your battery. you can get the same improvements by messing with your cpu yourself. battery life is all about how you personally use your device, how you set it up, what kinds of apps you install, and ver much the quality if your phone/data signal. thats it. there is no magic pill(kernel) that you can take to improve your battery life. if you want better battery life, keep away from terribly written apps, and apps that drain your phones resources.
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Even then some kernels have customizations and optimizations to help lengthen the battery life. For example different CPU govorners and reduce unneeded clock speed overhead and under clocking can help too with the help of a custom kernel. So yes, poorly written apps and sensors that hog power tend to be the majority of power loss, I still think that the kernels introduce a bit of help too

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