Develop Bugs

Does Overclocking eat up battery life?

Does overclocking have effect on my battery life? not successful in searching a thread on this. Thanks.

HI
I mentioned a few things about it in this thread, if you scroll to my bit, but this is no hard and fast tes, just my observations.
http://forum.xda-developers.com/viewtopic.php?t=59473

use xcpuscalar and set it to scale up and down based on proc. percentage, i find i can even save battery like this, whilst having the performace of a permanent OC when i need i.

@fa147 will do that.
i actually noticed that when i removed xcpuscalar and returned to normal i was able to save almost 2X my bat life.
@midget_1990 I have not tried auto scale but wouldn't this make the system slower instead because it would only speed up when there is already a lot of load and might cause hangups?

I used to hackmaster to a) save battery when i'm not using my device by underclocking and b) to scale up and o/c the performance when I need it (like with media playback etc)

How do you over clock?

Does anyone know how to over clock you're DI to say 1.2? Thanks for any help.

You first need to root your phone, then install a kernel that is compatible with whatever rom you are using, then you need to install an OCing app like SetCPU and adjust accordingly.

I'm rooted running the 2.2 RUU and I have set cpu. So do I just need a kernal? Which one?

i reccomend King Kernel bfs #4, best freaken kernel ever... its located... here

so when i install this kernal is it ok to just bump the cpu speed up to 1.2? are there any guides to do this?

makos101 said:
so when i install this kernal is it ok to just bump the cpu speed up to 1.2? are there any guides to do this?
Click to expand...
Click to collapse
A lot of factors come into play when you start overclocking, every rom will respond differently.
The first thing to do before anything is to do a complete nandroid back up.
When overclocking keep in mind that the more you overclock the more chances you have of making your system unstable.
I have experimented a quite a bit and I have found that the King Kernal #4 seems to work well for me and at 1.2 it seems to be pretty stable. Any higher than that and my phone will sometimes re-boot itself for no apparent reason.
Again, your rom may handle things different so experiment and see what works best for you.
And remember - Do a complete backup first!

I'm using the number 4 kernal and it only goes to 1.19 is this what you mean by 1.2? I have to keep mine at 1.1 ghz at 1.19 my di gets unstable

Ya that's as high as they can oc these chips. I can only get to 115 safely 119 just crashes. But the charging experience will be better than stock with the BFS #4.
Sent from my ADR6300 using XDA App

Could you guys please tell me what your settings for setcpu are?
I want better battery life and a faster cpu but im noticing that my phone almost needs a wake up time when i come out of screen off.
Thanks so much

makos101 said:
Could you guys please tell me what your settings for setcpu are?
I want better battery life and a faster cpu but im noticing that my phone almost needs a wake up time when i come out of screen off.
Thanks so much
Click to expand...
Click to collapse
If you are experiencing slow wake up, try increasing the min cpu speed to something around 460. Better batt life and increased speed takes a lot of experimenting. Your OC speed might differ from others due to differences in the phones cpu. For example, I have never been able to oc to 1.19 without the phone freezing or rebooting. My phone can handle 1152 but 1113 is perfect. In my opinion, ROMs have something to due with best batt-speed combo. I am running Ruby 1.1.1 with a setcpu profile of Screen off=245 without any wake lag. Other ROMs I have tried had wake up lag at that speed profile.
My set up:
(ROM-ASOP) Ruby 1.1.1
King's #1 ASOP "I told you so"- only works with ASOP
With the ROM's "Gem" performance scaling setting off, I use setcpu to OC to 1113, min is 245. I have a profile set to SCREEN OFF = 384 max/245 min.
I haven't worried about battery life since I started using King's kernals (I've tried them all with every compatible ROM on xda). I have several posts elsewhere on XDA showing 12 plus hours on a single bump charge and heavy phone use. Good enough for me. Stock cpu speed plus Sense ROM seems slow to me now.....to each his own though.

I hope to get some help because i value the opinions of those on this forum. Currently i am running virtuous 2.7 with virt. kernal v2. I am rooted, s-off, 2.15.xx radio. I want performance without draining my battery. What are the best settings to use in setcpu?
I did try king's kernal #4, but it was rebooting. switched kernals this morning.

One other app I use in conjunction with SetCPU is MinFreeManager. This will readjust your free ram to a higher standard. But with SetCPU I have it at 1113/Ondemand with no custom profiles. One other thing I really don't set is the Set on Boot option. I don't know why but I do. So with SkyRaider Vanilla 3.0 RC3/ KingX Kernel #4/ and MinFreeManager my phone fly's. I can't say for certain what settings you need for your phone but 1113-1115 is preferred by "most" phones and keep the set on boot option off. I keep a Galaxy S live wallpaper running and pandora while browsing the web and no lag what-so-ever.
CyanogenMod 6.0.2 and KingX kernel #1 with the same setup runs almost as smooth.
Hope this helps you out.

Safe under and overclock for Desire Z?

What are the safe/stable clockspeeds for underclocking and overclocking my Desire Z? Also, what app do I use? Like, I don't mind paying for the app (as long as it's not too expensive)
Sent from my HTC Vision using XDA App

SetCPU can be used to overclock if you're rooted. Depending on the ROM and Kernel combination, overclocking to about 1.3ghz is usually safe. Some go up to 1.5ghz or even 1.8ghz, but are often quite unstable depending on other configurations you have in your ROM.
As far as underclocking goes, some custom kernels clock all the way down to 122mhz, I've been using a streamline5 kernel on CM7 (which offers 122mhz min) and haven't had any ill effects with this.

I have the Virtuous Sense ROM (with it's default kernel, although it does have other kernels which can give other cpu speeds), right now but might try out another ROM soon (maybe) do you know what's the min and safe max for this ROM?
Also, can I just set a particular clock speed (e.g. 500MHz) and it should be ok or is there any stability difference between say 500MHz and 505MHz? Just curious. I looked at SetCPU and it looks like a good one. Also, if the clock speed I set makes things go wrong, can I revert it or can I get stuck with it and need to do a wipe?
Sent from my HTC Vision using XDA App

zaghy2zy said:
I have the Virtuous Sense ROM (with it's default kernel, although it does have other kernels which can give other cpu speeds), right now but might try out another ROM soon (maybe) do you know what's the min and safe max for this ROM?
Also, can I just set a particular clock speed (e.g. 500MHz) and it should be ok or is there any stability difference between say 500MHz and 505MHz? Just curious. I looked at SetCPU and it looks like a good one. Also, if the clock speed I set makes things go wrong, can I revert it or can I get stuck with it and need to do a wipe?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
No, there's no need to set a particular clock speed. Just whatever works for you. I wouldn't recommend going under 800mhz, as the phone will really really bog down even with normal use.
I haven't used that particular ROM, but I'm assuming anywhere around 1.3ghz should be safe on the upper limit. Like I said before, anything above that might start to cause issues. You might also want to consider the battery life implications of severe overclocking.
You can change the clock speed any time you want. If you're having wakeup or heat or any other issues just go back to SetCPU and change the max clock speed again. You can also use profiles in SetCPU to change the clock speed when the phone is overheating, or when the screen is off, or when the battery gets to a certain %. There are tons of posts detailing how others have setup their SetCPU profiles.
One last note, don't forget to check the box for "Set on Boot" in SetCPU, this way your changes aren't undone on reboot.

Thank, I think I got everything I need to know in your last reply

I'm on CM7, with the CM7 kernel, and clocked in at 1.5GHz, and have no problems, and the rom is super fast. And I use SetCPU.

Governors...

Rooted Stock ROM. http://forum.xda-developers.com/showthread.php?t=2387942. Havent changed my Kernal asfar as I know, but have adjusted CPU setting in ROM toolbox.
I currently use OnDemand governor with max slider at 1200Mhz. After learning that OnDemand is not too good for batterys life long term as I use my phone in short bursts and alot of multitasking I have found that SmartassV2 would probably be the best governor for to use. The phone is used to play media, games, browsing and sketchbook app, nothing too serious but I want the best balance between battery life and performance possible.
I understand playing with the kernal can result in issues but have not managed to find a guide on how to do this on XDA. Can anyone advise me on this or point me towards a simple guide please.
Thanks.

so ur using Stock Samsung kernel with ondemand ??
only governor on stock kernel that have cores hot plugging is pegausuQ AFAIK so ondemand will cause worse battery

[Q] Is overclocking made automatically?

So, I have installed ExtremeKernel3 on my phone, together with EliteGamer 2.0.
And to the question. Apparently the ExtremeKernel overclocks the processor. But how do I know if my phone is overclocked or not? Is the overclocking made automatically, when I install the kernel? Or do I have to do anything else to overclock it? I just don´t know how it works.

U can use "no frills CPU" to overclock ur cpu
Sent from my R800i using XDA Premium 4 mobile app

silmes said:
So, I have installed ExtremeKernel3 on my phone, together with EliteGamer 2.0.
And to the question. Apparently the ExtremeKernel overclocks the processor. But how do I know if my phone is overclocked or not? Is the overclocking made automatically, when I install the kernel? Or do I have to do anything else to overclock it? I just don´t know how it works.
Click to expand...
Click to collapse
Overclocking means that you can set phone's clock speed more then manufacturer default speed. For Xperia Play deafult clock is 1GHz.
Term "overclocking enabled kernel" means that value of clock speed is higher then in deafult (stock) kernel.
To be able to have use of that higher speed, you need an app that take take of clock speed. For example No-frills CPU Control There you set speed of your clock.
What value of clock you can set is determined in kernel. for example, in stock kernel you can set 1GHz and below, in DoomLord kernel you can set up to 2GHz and in Lupus kernel you can set up to 1.6GHz. Remember that doesn't mean your phone can work at that high speed - it is invidually on each phone how much overclocking each phone can take before it just don't work anymore (for example, my phone can't get past 1.8GHz, it can work on 1.7GHz only when on charger, but it is stable on battery on 1.6GHz)
The reason devs make overclocking kernel is to give an option how much max clock speed you can set. But that doesn't mean you should do this by any means, because, even it can work on higher clock, it can be bad for cpu if you do it on long period of time.
With higher clock, phone drain more current from battery, wich means overheating can lead to degrading battery life, shortening cpu and/or electronics lifespan in general
But, with overclocking you could shorten electronic lifespan from 10 years to 4 years, and nowdays hardware became obsolete in only few years, and that's why lot of people don't care about danger that overclocking bring.
If previous text was TL;DR, here is short version:
Kernel gives you option what is MAX speed you can set, with an app you choose what clock speed you want to use

Bakisha said:
Overclocking means that you can set phone's clock speed more then manufacturer default speed. For Xperia Play deafult clock is 1GHz.
Term "overclocking enabled kernel" means that value of clock speed is higher then in deafult (stock) kernel.
To be able to have use of that higher speed, you need an app that take take of clock speed. For example No-frills CPU Control There you set speed of your clock.
What value of clock you can set is determined in kernel. for example, in stock kernel you can set 1GHz and below, in DoomLord kernel you can set up to 2GHz and in Lupus kernel you can set up to 1.6GHz. Remember that doesn't mean your phone can work at that high speed - it is invidually on each phone how much overclocking each phone can take before it just don't work anymore (for example, my phone can't get past 1.8GHz, it can work on 1.7GHz only when on charger, but it is stable on battery on 1.6GHz)
The reason devs make overclocking kernel is to give an option how much max clock speed you can set. But that doesn't mean you should do this by any means, because, even it can work on higher clock, it can be bad for cpu if you do it on long period of time.
With higher clock, phone drain more current from battery, wich means overheating can lead to degrading battery life, shortening cpu and/or electronics lifespan in general
But, with overclocking you could shorten electronic lifespan from 10 years to 4 years, and nowdays hardware became obsolete in only few years, and that's why lot of people don't care about danger that overclocking bring.
If previous text was TLDR, here is short version:
Kernel gives you option what is MAX speed you can set, with an app you choose what clock speed you want to use
Click to expand...
Click to collapse
Thank you very much for an informative answer!