Is it possible to make a underclocking or undervolting kernel?
100mhz on idle is enough.
On the cyanogen underclocking to 800mhz or less slows down the phone.
dertester1 said:
Is it possible to make a underclocking or undervolting kernel?
100mhz on idle is enough.
On the cyanogen underclocking to 800mhz or less slows down the phone.
Click to expand...
Click to collapse
Underclocking mostly slows down the device.. but i think you're right we should be able to set it too 100mhz in idle
Wait for nova 12 there will be an overclocking tool included
any other method of overclocking besides nova rom?
I am not entirely sure you can underclock down to 100mhz. I've read on a different forum that OMAP has a limitation for anything less than 300mhz.
Related
Hello all,
I've a question since some day, I try to find the answer with search but with no success.
Which benefit you can receive with UV or OV?
I think that:
The UV is better for battery life but with less performance.
The OV give a better performance but consume more battery.
If so... why you find many overclock setup with more Mhz but less Volts?
I cannot understand that... it's look like a no sense for me.
I've a Galaxy S with NEO 17 Kernel.
Actually use:
Governor: conservative
Force Minimal freq when screen off: OFF
1200 Mhz -25
1000 Mhz -50
800 Mhz -50
400 Mhz -50
200 Mhz -75
100 Mhz -100
I try this setup coping from other post, because I want the better life battery for "office use" but a good performance when I do gaming... but I cannot understad why of this setting
PS: sorry for my poor english.
eXtr3me79 said:
Hello all,
I've a question since some day, I try to find the answer with search but with no success.
Which benefit you can receive with UV or OV?
I think that:
The UV is better for battery life but with less performance.
The OV give a better performance but consume more battery.
If so... why you find many overclock setup with more Mhz but less Volts?
I cannot understand that... it's look like a no sense for me.
I've a Galaxy S with NEO 17 Kernel.
Actually use:
Governor: conservative
Force Minimal freq when screen off: OFF
1200 Mhz -25
1000 Mhz -50
800 Mhz -50
400 Mhz -50
200 Mhz -75
100 Mhz -100
I try this setup coping from other post, because I want the better life battery for "office use" but a good performance when I do gaming... but I cannot understad why of this setting
PS: sorry for my poor english.
Click to expand...
Click to collapse
How come you think that UV means "less performance"? Core voltage has nothing to do with performance (at least not in the way, you mentioned it)
I think you can found some good tutorials about OC/UV, somewhere in sgs section..so check those out to learn more about this subject.
It isn't always very easy to figure out these things, but it's good that everybody can found lots of information from xda
Sent from my GT-I9000 using XDA Premium App
Kurre said:
Core voltage has nothing to do with performance (at least not in the way, you mentioned it)
Click to expand...
Click to collapse
First of all thanks for your reply.
I "suppose" that under voltage is mean less performance, but I really don't konw.
I want to understand why I have the possibility to under or over voltage and what does mean...
In order to make an example, which different are there if I put 1.200 Mhz with voltage -50 or 1.200 Mhz with +100 voltage?
Sorry I'm newbe in overclocking!
I was using oc for few days and I didnt find a better performance except the quadrant score. Anyway oc is a risk process. If we are not getting that much performance then why should we take risk. Try Darky ROM v10.2RE and flash semaphore kernel you will get a better performance without OC.
http://samsung-sgs.blogspot.com/2011/08/how-to-flash-darkys-rom-v102-re.html
http://samsung-sgs.blogspot.com/2011/08/how-to-flash-semaphore-kernel.html
hi guys,
does anyone have a tried and working UV values for best battery life? I don't want any more performance, so I'm not looking for OC, but perhaps any idea what UV stays stable?
Well, it's easy the higher you OC, the more it will drain your battery. As for UV, I can't tell because the voltages are different for every device, Rom and kernel...
Sent from my LG-Stone from the Prehistory...
Nahh... Just kidding!
CM 7.2 Koboltzz KANG
IronKernel 32MB
Usually undervolting -50mv for each speed will work for most devices, although its not recommended to decrease that much for speeds below 800mhz since it will affect your phone's wake up speed.
And tegra 2 cpu controller only supports minimum of 770mv, going anyway lower than this value will not have any effect.
My advice, try UV -25mv for 500mhz, and the rest above is -50mv. Some o2x can go -100mv, but you need to be lucky to own such device.
Cheers!
Mine is working perfectly on -75.
But when i go to -100, soemtime freezes device, so i use -75 regularly.
trying -50 across the board now, seems to run stable.
brw, how does lower voltage hurt the speed?
I can't really explain clearly since I do not know the technicals, but from what I read in xda, it will affect your speed, meaning 1.2ghz running at undervolted setting will not run the same as at stock voltage. Maybe its an efficiency issue, I do not know.
I thing that i experience, If you undervolt too much the few lowest clock steppings, you sometimes might not able to wake the phone from sleep because there is not enough power to wake it up.
I hope my explanation help you a little, and hopefully someone with more experience can give you a better explanation.
using -25mv ate 1.1ghz and 1ghz, -50mv at 800 Mhz, and -100mhz (750Mhz so its 770mhz because hardware limitations) on all other frequencies!
-50 mv is the limit for the device don't use below -50mv. but it dependes on your device. mine cannot UV it always gives me SOD i think my hardware phone is crap
antec123 said:
-50 mv is the limit for the device don't use below -50mv. but it dependes on your device. mine cannot UV it always gives me SOD i think my hardware phone is crap
Click to expand...
Click to collapse
When did you buy your phone?
I have one of the 10 first phones sold in Sweden and I cannot undervolt mine at all.
Just wondering if there's any correlation between manufacturing time and UVability (yeah I just made that word up).
// Stefan
I run with 1100.. good compromise between speed and battery life i think
Hey does someone know the overclock configuration that was posted on the Overcome page once? I'm running on Overcome 4.1 with the belonging Kernel which allows me to get to 1.6ghz (theoretically) and I'd like to overclock to 1.2ghz.
I'd be very grateful if you could help me
Edit: I found this http://forum.xda-developers.com/showthread.php?t=1036020 but does this guide also apply to Overcome 4.1?
Just use Voltage Control or SetCPU. It's really not that hard at all. Just be careful with your voltages-overvolting will eat your battery more but may allow you to reach higher frequencies, and undervolting may get you better battery life but may make your tab unstable.
As a reference, I have my Tab running at 100-1.4 with smartassv2 and stock voltages on the Overcome 4.0 kernel.
Sent from my SCH-I510 using xda premium
thanks ;-) but which sheduler do you use?
for those who also have problems with overclocking and for
the newbies (like me =-D) I found this page which describes the usage of shedulers
and governors http://forum.xda-developers.com/showthread.php?p=19846297
IO Scheduler: CFQ
Governor: Smartassv2
At least that's what I use on my phone. I just left everything alone on my tab.
Sent from my SCH-I510 using xda premium
thanks, you helped me a lot ;-)
I'm using Voltage Control on 1.3ghz with stock voltages on smartassv2 and deadline and it runs pretty stable
Thanks, useful tip for me too.
I use SetCPU
OC max 1.3GHz, min 100MHz
-75mV from 100Mhz --> 1.0GHz and then -50 from 1.0GHz to 1.3GHz
PLUS various profiles to set max to 800MHz whilst screen off etc etc
that's exactly the same that I did =-D=-D=-D
That's pretty much what I have. OP, sorry I couldn't answer your PM, my tab is currently bricked and I haven't had the chance to recover it.
Sent from my SCH-I510 using xda premium
yea I have time =-D that's not so important, just make sure your tab runs again ;-)
phlooke said:
I use SetCPU
OC max 1.3GHz, min 100MHz
-75mV from 100Mhz --> 1.0GHz and then -50 from 1.0GHz to 1.3GHz
PLUS various profiles to set max to 800MHz whilst screen off etc etc
Click to expand...
Click to collapse
This is what worked for me as well, just don't check"set at boot" option till you've tried that speed for a few days and you config proves stable.
Joe Blough said:
This is what worked for me as well, just don't check"set at boot" option till you've tried that speed for a few days and you config proves stable.
Click to expand...
Click to collapse
Haha, I did check that option when I foolishly set the OC max to 1.6GHz
...I was just able to uninstall between one of the many lopping reboots
Anyway all, sorted now. In fact I have reverted to stock voltage for 1GHz up to 1.3GHz because playing Trial Xtreme2 would cause a reboot when I'd exited the game - seem's all ok now *touches wood*
Hi, I'm tempted to push CPU beyond current 1200MHz, no Undervolting. I want to do a survey on what CPU frequency settings and UV hold you for daily use. :silly:
I'm currently using 1.3GHz/368MHz with smartassV2 governor. Good performance and good battery life on IceColdSandwich 8.2. At 1.4GHz or higher, it's unstable and the phone freezes while the screen is powered off sometimes.
I'm currently running 1420MHz with Ondemand governor, no UV, with no problems.
ZaySk said:
I'm currently using 1.3GHz/368MHz with smartassV2 governor. Good performance and good battery life on IceColdSandwich 8.2. At 1.4GHz or higher, it's unstable and the phone freezes while the screen is powered off sometimes.
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Click to collapse
I thought the phone will start freezing when max freq is set to 1.5GHz?
Sent from my potato chips using xda boost
I have my inc2 ocd to 1.5ghz on a daily basis , used to run cm at 1.8ghz daily with little overheating (nothing high enough to worry about), and I've also ran quadrant tests on cm7 at 2ghz.right now I'm running cm10 at 1.3ghz very stable.although sometimes in set CPU transitioning to a high freq like above 1.6 my phone would lock up but it seems like it happened only in ICS ROMs .idk hope this helps.BTW I never under or over volt
Sent from my Incredible 2 using xda premium
Should this not be under Q&A or general. Not really a developers topic
Is there any way to overclock this device's cpu or gpu or even change governors?
revery0 said:
Is there any way to overclock this device's cpu or gpu or even change governors?
Click to expand...
Click to collapse
I hope this will help you: http://forum.xda-developers.com/asc...7en-rom-v1-0-emui-2-3-4-4-2-23-10-14-t2916016
This rom has modified governors and does not gives you the ability to change anything or adjust the cpu speed...
revery0 said:
Is there any way to overclock this device's cpu or gpu or even change governors?
Click to expand...
Click to collapse
We don't have a kernel that supports overclocking or has different governors implemented, so that's a no...
GawDroid said:
We don't have a kernel that supports overclocking or has different governors implemented, so that's a no...
Click to expand...
Click to collapse
Actually we do.. the stock kernel allows to overclock ( optimum performance power plan )
revery0 said:
Actually we do.. the stock kernel allows to overclock ( optimum performance power plan )
Click to expand...
Click to collapse
AFAIK, the power plan modifies the cpu frequency stepping, but still it doesn't allow surpassing the maximum CPU frequency of 1795 MHz.
And the only governor in our kernel is a version of hotplug.
Here's how it works in my understanding:
Quote: The “hotplug” governor scales CPU frequency based on load, similar to “ondemand”. It scales up to the highest frequency when “up_threshold” is crossed and scales down one frequency at a time when “down_threshold” is crossed.
The powerplan can modify the up- and down- threshold steps (so the device can use max frequency sooner and stay on higher frequencies longer), but that doesn't affect max frequency at all.
Hi!
This scripts is not overclock, but change/lock clock speed.
You need root, and any Script runner app.
Ddr_gpu=lock max speed ddr and gpu
ddr_gpu_cpu=lock max speed ddr, gpu and cpu
ddr_gpu_cpu_4core=lock max speed ddr, gpu, cpu and lock 4 core cpu
ddr_gpu_cpu_core_4core_stock=revert all to stock.
This scripts not pernement, if you restart the phone, all settings revert back to stock.
Ps: please when you download this files, delete the .zip.
No-Frills CPU Control
This apk controls your CPU on device.
Sent from my HUAWEI P7-L07 using XDA Free mobile app
Ziółek said:
No-Frills CPU Control
This apk controls your CPU on device.
Click to expand...
Click to collapse
Won't allow overclocking max frequency either... Just increasing min freq, and decreasing max freq.
Pretty much useless on P7, since we only have 1 governor and 3 I/O schedulers to chose from.
GawDroid said:
Won't allow overclocking max frequency either... Just increasing min freq, and decreasing max freq.
Pretty much useless on P7, since we only have 1 governor and 3 I/O schedulers to chose from.
Click to expand...
Click to collapse
Where I wrote that this app allowed overclocking ? It control CPU min and max frequency but only in factory fixed range.
Ziółek said:
Where I wrote that this app allowed overclocking ? It control CPU min and max frequency but only in factory fixed range.
Click to expand...
Click to collapse
Easy, Ziółek You never said it did.
However, since No-Frills doesn't do any good in the terms of overclocking, why posting about it in the overclocking thread
Would you agree?
pozdro z Wro
GawDroid said:
Easy, Ziółek You never said it did.
However, since No-Frills doesn't do any good in the terms of overclocking, why posting about it in the overclocking thread
Would you agree?
pozdro z Wro
Click to expand...
Click to collapse
Agree I referred only to the post with scripts
pozdro z Wawy :good:
No-frills not work correctly on p7...can't lock max speed and 4cpu clock, and can't lock gpu and ddr clock...
But this scripts do.
Try and check with cooltool.