What is a good gaming kernel for CM 10.1 ?
Sent from my LG-P880 using xda app-developers app
I'm using iodak v7. It gives great performance, smoothness and CPU throttle doesn't kick in until high temps like 80-85 are reached. Most games reached around 80 max in my case and cores were still running at 1.5GHz. I really love this because it doesn't cause lags! Try it. Btw, while gaming, I OC CPU to 1.7GHz and GPU to 600Mhz which gives additional performance.
scarfaceq said:
I'm using iodak v7. It gives great performance, smoothness and CPU throttle doesn't kick in until high temps like 80-85 are reached. Most games reached around 80 max in my case and cores were still running at 1.5GHz. I really love this because it doesn't cause lags! Try it. Btw, while gaming, I OC CPU to 1.7GHz and GPU to 600Mhz which gives additional performance.
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Are there any bugs and how is battery life ?
Sent from my LG-P880 using xda app-developers app
battery life is what you would expect, around 3-4 hours on screen time
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I use xperia x8 and i have nAa11 and 2.1.9 CM7... I have the processor speed, my minimum speed is 600MHz, 806MHz is max speed... I am interested in what else I can do or put on my xperia x8 to be a better, more beautiful or fast?
When it comes to speed, I think you have reached the X8's limits. There is only so much the devs can do - and for the record, they've done a far better job than SE (I guess it's just S now) will ever do.
Why 600Mhz for minimum speed? That will drain your battery very fast.. I have my minimum speed at 19Mhz and my phone is smooth as butter.. Your governor will raise the speed when needed.
Sent from the bathroom using the toilet
Nikkopt said:
Why 600Mhz for minimum speed? That will drain your battery very fast.. I have my minimum speed at 19Mhz and my phone is smooth as butter.. Your governor will raise the speed when needed.
Sent from the bathroom using the toilet
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19 mhz is it possible i am too on na kernel but my phone reboots
my battery life is good...
SeeZaar said:
my battery life is good...
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Really? how's your battery life? do you have any screenshot ?
ankitxperia said:
19 mhz is it possible i am too on na kernel but my phone reboots
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Well, i have nAa too and no reboots at all. Because i don't overclock i also undervolt which also helps saving battery. One thing i like is the fact that phonecalls always use 19MHz
What governor are you using?
Sent from the bathroom using the toilet
Hi all,
Since Zeus v6.39 it is possible to undervolt our OB's. I am curious till what level you all can undervolt your OB. Please test the maximum undervolt level at least for a day or so before reporting, so we can be reasonably sure it is stable. And to make comparison possible, keep other settings standard please, so CPU 300 - 1000 MHz, DVFS enabled.
Personally my OB is currently running stable @ the -5 voltage level. -7 gave me an SOD while the screen was off within a few hours and @ -6 parts of my wallpaper went black (GPU problem?).
Happy polling!
I vote for -7. When I enable DVFS I have some lag so I disabled it. In 1.5 days of usage battery gone empty. (some surf on Wifi, some calling, playing some games etc.) I played Max Payne without any lags and got no SODs so far.
AFAIK, DVFS is dynamic voltage and frequency scaling and setting contstant voltage level when it is activated is something not suitable for it's nature. So I don't use bot of them at the same time.
i can't really feel the difference.. stock freq, dvfs enabled, smartassv2 and sio.
voltage now on -7 for a few hours but i can't notice any difference.
Didn't see difference in performance which is a good sign and battery life fulfill my needs : DVFS enable, freq 100-1000, UV -7, smartass2 and SIO. Never got any SOD since its release (and using LG lockscreen).
Sent from my LG-P970 using xda premium
My phone is fully stable at -7 (100-1000mhz). Need more undervoltage. Battery life is more important than cpu perfomance (imho).
I_SBerg said:
I vote for -7. When I enable DVFS I have some lag so I disabled it. In 1.5 days of usage battery gone empty. (some surf on Wifi, some calling, playing some games etc.) I played Max Payne without any lags and got no SODs so far.
AFAIK, DVFS is dynamic voltage and frequency scaling and setting contstant voltage level when it is activated is something not suitable for it's nature. So I don't use bot of them at the same time.
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Where did you get this information about DVFS from? It sounds plausible because of the name, but I cannot find such information in the Zeus thread. A different possibility is that with the voltage tweaks in Zeus you only change the sort of average voltage of the OB and DVFS dynamically adjusts this to the needs of what you are doing. But this is all guessing for me.
Although I feel it might eat some battery (I don't know for sure) I like DVFS on because I feel a heavy game like Angry Birds Space becomes more responsive with it.
-7, 100-1200
On zeus 6.39O stable with -5 300 - 1200 mhz. +5 to -5 gave about the same score in quadrent.
Battery usage is quite good
-6 gives me lag..
Sent from my LG-P970 using xda premium
dflt said:
-7, 100-1200
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what are you trying to say here?
Verstuurd van mijn LG-P970 met Tapatalk
I have 100-1100mhz and -3 very well battery and good Performance
Sent from my LG-P970 using xda app-developers app
KC Boutiette said:
Where did you get this information about DVFS from? It sounds plausible because of the name, but I cannot find such information in the Zeus thread. A different possibility is that with the voltage tweaks in Zeus you only change the sort of average voltage of the OB and DVFS dynamically adjusts this to the needs of what you are doing. But this is all guessing for me.
Although I feel it might eat some battery (I don't know for sure) I like DVFS on because I feel a heavy game like Angry Birds Space becomes more responsive with it.
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Searched net. eg: http://www.emo.org.tr/ekler/035226640b6b89f_ek.pdf
I have 100-1350mhz with -7 stable .
-7, 1350
Sent from my LG-P970 using Xparent ICS Tapatalk 2
I_SBerg said:
Searched net. eg: http://www.emo.org.tr/ekler/035226640b6b89f_ek.pdf
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Hey thanks for the info! That clarifies a lot to me about what they mean with DVFS.
However, I still dont believe setting the voltage level and DVFS dont go well together. To be more precise I dont believe you make the cpu voltage constant by setting the voltage level in Zeus Tweaker. I believe you make the CPU voltage constant by disabling DVFS.
In a different way: setting the voltage level to 0 would be the original 'stock' level right? So why would LG include DVFS on our OB if it would not work?
KC Boutiette said:
Hi all,
Since Zeus v6.39 it is possible to undervolt our OB's. I am curious till what level you all can undervolt your OB. Please test the maximum undervolt level at least for a day or so before reporting, so we can be reasonably sure it is stable. And to make comparison possible, keep other settings standard please, so CPU 300 - 1000 MHz, DVFS enabled.
Personally my OB is currently running stable @ the -5 voltage level. -7 gave me an SOD while the screen was off within a few hours and @ -6 parts of my wallpaper went black (GPU problem?).
Happy polling!
Click to expand...
Click to collapse
Hmmmmmmm.... scratch that -5. My OB was acting funny, could not take a screenshot and all the power toggles in the notifications area were on one screen all of the sudden. Reboot and I am back to -4 now, cant change the poll however, can I?
-3, 100-1100 works well for me, good battery life too :fingers-crossed:
is anybody comparing with the stock settings?
i monitor with battery monitor widget and so far i haven't found any setting that gives a better battery usage then stock setting.
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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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
I've always been a big fan of undervolting. These are the lowest voltages I can get stable at these common speeds. I found I can underclock the Matr1x kernel further than some others I have tried for some unknown reason. How low have you been able to go? Also, what programs do you use to test stability? So far, I have been running Antutu test completion as a measure of stability. Any suggestions otherwise?
288MHz - 650mv
1.02Ghz - 800mv
1.51Ghz - 1000mv
ROM: Bionic AOSP V3
Kernel: Matr1x 6.5
Noob question~ Why do people undervolt?
WarToilet said:
Noob question~ Why do people undervolt?
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To increase battery life,
The Long answer is that the CPU has a number of parameters where Clockspeed (MHz) and voltage (mV) are two. Clockspeed, well that is speed. Voltage is related to the amount of energy provided to the cpu, undervolting means that you feed the CPU less juice but demand that it runs at the same clocks. You are essentially starving the CPU,it uses less energy, but can become unstable if the voltage is insufficient to maintain operations. Manufactures always have extra voltage as a safety margin so power users can check their CPU bin (slow, normal, fast or faster) and lower voltages step by step until they crash the phone during a stress test, increase the voltage slightly and boom, your phone uses less battery power while being just as fast.
I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.
estallings15 said:
I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.
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Took words from my mouth. This this and this. It reduces heat, which in turn reduces battery use. UV by itself doesn't save a lot of battery, it's the consequences of it. I'm normally not a fan of UV, but with current N4 sw/fw it NEEDS it. It's way too high.
Interesting observation. As of recently my phone jumps up by 3-5c from 37-38 hover. Never used to do it before, not until i got it up to 50c for about half an hour last week. Previously it would stay steadily at 37-38, now it spikes up now and again during use. What's interesting about is that once it goes over 40c battery use increases drastically. So i wonder if people that have really good battery life don't have phones that go over that temp often and vice versa.
I haven't played around with the values too much yet, just a -100mV across the board. This seems to work just fine, so I might experiment some more..
Using Franco test-r69 at the moment.
Sent from my Nexus 4 using xda premium
I undervolt to prevent heating like others say. My Antutu scores drop like a rock when I'm at stock clockspeeds mostly likely due to thermal throttling. Now I can run it repeatedly without having scores drop. It saves battery and runs faster while running games even for very short periods of time, so I am a big fan of undervolting. :good:
Undervolt to reduce power usage, think of the stock voltage as normally being more than is required, think of running for a bus yet you have 2 minutes why waste energy when you can walk and still make it .
Undervolt for less power usage and less heat produced meaning battery performance is better (cooler battery is a more efficient one) and performance is up as you avoid any thermal limits in place .
Great stuff undervolting, I have managed to get -150mV across the board ( 1.5ghz @ 1000mV) and 288mhz is 162.5mV .
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
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The more the heat, the faster the battery drains. Since undervolting decreases heat, im sure it should increase battery life. Maybe not for browsing or calling, but playing a heavy 3D game.
is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...
zakoo2 said:
how can you guys undervolt? is there an app for that? i bought Franco's kernel updater app, but there's no option to undervolt in there.
edit: just found an app called setcpu, is that it?
sent from my Nexus 4...
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You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2
aimcr7 said:
You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2
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I'm familiar with undervolting both on PC and on phone, but i had a Motorola defy before my nexus and undervolting there was a bit different.
sent from my Nexus 4...
zakoo2 said:
is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...
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How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.
italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
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Former nexus s user here, the reason nexus s didn't benefit in battery life much was that it only had 1 core, and used a higher nm manufacturing process, 65nm -> 28nm. Lower voltages in the 28nm means that it multiplies the heat/power savings more than a 65nm, and the 4 cores multiply the savings by up to 4.
FatalityBoyZahy said:
How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.
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don't know, it was just there. did you try to reboot after installing the app?
I'm on Franco's kernel btw.
sent from my Nexus 4...
Pls what are the right values for under volting Samsung captivate
Sent from my SGH-I897 using xda premium
I am new to this and my battery goes +40°C when I play simple games... I am running Franco's kernel r71 should I do UV? If so how much? Thanks in advance
Sent from my Nexus 4 using xda app-developers app
xtremer92 said:
Pls what are the right values for under volting Samsung captivate
Sent from my SGH-I897 using xda premium
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this is the lg nexus 4 forum.
sent from my Nexus 4...
What kind of success/failure are people having with overclocking and undervolting?
I'm doing this through ROM Toolbox Pro. Is there a better way? I'm a n00b with some of this stuff.
I have the phone overclocked to 1200mhz and all cpu levels are undervolted by 100mV.
Im doing so to get more performance, and better battery life. Just wondering what settings everyone else is using.
Also I'm using CM 10.1, with the BlueMint Theme.
Sent from my Samsung Captivate/JB CM 10.1 via Tapatalk.
DR650SE said:
Just wondering what settings everyone else is using.
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Every phone has different limits. It's just like PC overclocking, no two CPU/MB/RAM combos are exactly the same. In general most of Captivates will handle 1200 step OC with default voltages. Not too many will handle 120% live OC though. It doesn't matter what tool you use to OC. All tools try to play with the same kernel settings. In my experience UV saves very little battery but increases significantly the chances to get stability issues. This is why I never play with UV. My particular phone can do 1400 step OC or 1200 live OC with 1350mV. I run it on 1200 step OC @ default. Also, keep in mind that different ROMs/kernels give different OC results.
RE: undervolt
I agree with Val D that undervolting will not show any significant benefits. Overvolting has helped me with stability while overclocking. I use the free Voltage Control app for voltages, or the free NStools app. Rom Toolbox is a great app too- I use it for many other things- stick with what works for you. Currently I am running at 1200Mhz step, at 120% Live OverClock to get CPU up to 1440Mhz, and ARM voltage of 1350mV at that 1200Mhz step. Rock solid. Battery life suffers a bit, but I run this way for gaming. Day-to-day regular usage I just set to 1400Mhz step and no Live OC, default voltages. I have run fine in the past at 1500Mhz, no Live OC. Overclocking the CPU tends to make my phone a bit snappier and more responsive. A big battery drain that affects my phone is an app such as Gmail running in the background, or leaving wifi enabled when not in use. Setting the phone to Airplane mode has been a big battery helper too (I do not make any voice calls on this phone anymore). Governor and scheduler setting can also have a big effect on battery life. I searched for this post I made a while back that linked to two great articles on studies of battery life and voltages, and ended up reading through them again:
http://forum.xda-developers.com/showpost.php?p=28141250&postcount=1194
Great information. Edit: just figured out how to link articles in my signature.
Thanks guys. I know each one over clocks differently. Just looking for some rough outlines. Thanks for the links. I'll be reading up on those. I have extensive computer over clocking experience, but on e phone its a whole new ball game. Basically trying to make this phone last longer.
I'll have to learn what live OCing is vs step OCing.
Thanks again!
Sent from my GT-P3113 using Tapatalk HD
I just do 1200mhz OC using CyanogenMod 10.1 - the option is in the performance menu. So far no problems.
PxGold said:
I just do 1200mhz OC using CyanogenMod 10.1 - the option is in the performance menu. So far no problems.
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Awesome. Didn't even realize that as there. I've been using ROM Toolbox to OC to 1200MHz.
Sent from my Samsung Captivate/JB CM 10.1 via Tapatalk.
overclocking to 1200 mhz will made any difference ?
Klitoni said:
overclocking to 1200 mhz will made any difference ?
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I really didn't notice much of a difference in speed or responsiveness using CM 10.1.