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I am running Cognition 4.4.8, which will not allow OC/UC. I actually just want to UC. What recommendation would you have for a kernel compatible with Cognition 4.4.8 for Captivate that would allow me to UC?
Don't you mean oc/uv? I don't think you know what you are talking about.
Yeah its UV (undervolt). Find any kernel that allows it and is working with your ROM. Maybe ask in that thread as others could be using a custom kernel for that exact reason.
Sent from my SGH-I897 using XDA Premium App
UC is a real term, maybe he meant he wants to limit his clock speed to 800mhz. What's that called if not UC?
Although undervolting and underclocking to save battery is a waste of time. The cpu doesn't use that much battery in the first place, the screen and the modem use the most power, you want the charge to last switch to the lowest brighteness and 2g, that will give way more battery than uc/uv will.
studacris said:
UC is a real term, maybe he meant he wants to limit his clock speed to 800mhz. What's that called if not UC?
Although undervolting and underclocking to save battery is a waste of time. The cpu doesn't use that much battery in the first place, the screen and the modem use the most power, you want the charge to last switch to the lowest brighteness and 2g, that will give way more battery than uc/uv will.
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+1 on the battery topic. Even at a high OC the battery drain is not that much worse... a little yeah but not too severe.
Also good point about UC.. wasn't thinking about that at all ..underclock what!?!?
some people falsely think that the phone runs at 1ghz all the time, when in fact it downclocks itself and ramps up clockspeed when it needs it....so unless you have an app thats using 100% CPU all the time, your phone is running around 200mhz at idle.
Pirateghost said:
some people falsely think that the phone runs at 1ghz all the time, when in fact it downclocks itself and ramps up clockspeed when it needs it....so unless you have an app thats using 100% CPU all the time, your phone is running around 200mhz at idle.
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+1 again Although there are different governors that do different things most phone at stock will idle down to 200mhz. My phone for instance idles down to 800mhz, but thats just my prefrence
Yep, I meant OC/UV. I typed too fast for my own good!
Good points
Thanks for the message on how little battery undervolting saves. That was quite helpful. I did try the discussion board for Cognition, but no one seemed to be posting on using an alternate kernel, which is why I asked for recommendations here.
I believe Cog is KB1 based, so this kernel should work: http://forum.xda-developers.com/showthread.php?t=988805
Thanks I will certainly trie eXist's kernel.
Ernesto47 said:
Thanks I will certainly trie eXist's kernel.
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If you want the best battery life, I suggest something other than cognition. In my experience, i9000 based custom roms get better battery life.
Sent from my CM7 powered captivate
@sixstringsg I notice that you are using Cyanogenmod. I keep looking at that, but since it was still not listed as stable, I was not sure whether to try it. How are you finding the stability?
Howdy folks. Could someone point me in the right direction? Thinking about overclocking but have not done it. What are the benefits / rewards?
Is there an app or program i can to do this?
And what is a safe range?
Thanks in advance!
Sent from my intergalactic space modulator using XDA App
Benefits : Faster phone, smoother ui
Cons: Phone may heat up if overclock is set too high
For this phone 1500 is the highest, safest number we can get to right now. I would suggest setCPU, which you can find on XDA for free. (search setCPU)
You'll need a new kernel first, the stock one doesn't support oc. Go with Faux's assuming you're running a rom compatible with it (and most are).
After that, download Pimp My CPU from the market and you're good to go.
Sent from my Nexus Prime using XDA Ultimate App
To be honest with you, I notice hardly, if any, real-world phone speed increase when I overclock...barring benchmark numbers. I'm not really sure why that's the case for me, and why for some others it's such an extremely obvious difference (or so they claim). Perhaps I'm not running the same cpu intensive apps that they run. But for general, day to day, running of my phone, it's just not worth it for me due to the battery cost.
So I would love to hear from some of you where "precisely" do you see such a marked improvement on the speed of your phone?
Well, first off, make sure you have a custom Recovery installed... Then find a ROM you'd like, and then, flash a custom OC Kernel..
You'll need an app such as SetCPU to control the overclock.
mmapcpro said:
To be honest with you, I notice hardly, if any, real-world phone speed increase when I overclock...barring benchmark numbers. I'm not really sure why that's the case for me, and why for some others it's such an extremely obvious difference (or so they claim). Perhaps I'm not running the same cpu intensive apps that they run. But for general, day to day, running of my phone, it's just not worth it for me due to the battery cost.
So I would love to hear from some of you where "precisely" do you see such a marked improvement on the speed of your phone?
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Are you using the stock launcher? It's alot smoother with the stock launcher if OCed to 1500, although i don't notice a difference from 800 to 1500 on launcher pro.
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.
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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 ...
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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
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+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
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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...
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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).
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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.
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Or one with LiveOC which is kinda better cause it also OC the GPU =D
+1
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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.
hi
sorry for being such a nooby mcnooby-pants
but i just want to know which combination of roms and kernels will give me a great battery life and at the same time i want to be able to overclock to 1.5 GHz
i looked through the forums and i did all the basic stuff like
undervolting
setting profiles in setcpu
and removing all the bloatware from the phone
but everyone has a different combination and im really confused as to which combination to use
right now im using eaglesblood 2.3.7 with the dragon kernel and its really not working very well
so any and all help will be appreciated
thank you
Slomo5793 said:
hi
sorry for being such a nooby mcnooby-pants
but i just want to know which combination of roms and kernels will give me a great battery life and at the same time i want to be able to overclock to 1.5 GHz
i looked through the forums and i did all the basic stuff like
undervolting
setting profiles in setcpu
and removing all the bloatware from the phone
but everyone has a different combination and im really confused as to which combination to use
right now im using eaglesblood 2.3.7 with the dragon kernel and its really not working very well
so any and all help will be appreciated
thank you
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My opinion:
1. Jump on a stock-based ROM with stock kernel and UC (underclock to 900-800 Mhz, you would be surprised you notice very little change in performance). Most stock-based ROM users report back great battery life.
2. Jump on a CM7 Nightly 199 or higher (Reports of great battery life, I can attest to this) with morfic or faux123's kernel (I prefer morfic's) which you can undervolt easily with Pimp My CPU (search XDA). I prefer it to SetCPU because the only profile I use is UC when the screen is off and with Tegra's DVFS CPU governor, it already does a good job of doing this. I also UC with this setup.
Delete Wi-Fi Calling (Kineto.apk) from your phone if you're not using it. I learned this from lotherius, it's always running in the background even when off and not in use. I was shocked to see the improvement.
I know it sounds stupid, but if you're in class or at work and don't need a barrage of updates on your phone, just turn off data. Most ROMs have a quick toggle setting to efficiently turn it on and off quickly and you'll be quite happy with how long it lasts. If you have to have data on or think it's moronic to have an Android phone that's not does not always have a data connection, battery drain is just the price that is payed.
woah.
Awesome answer
so do you think option 1 is better or 2?
does using cm decrease the battery efficiency?
if it does do you think the extra functionality in cm makes up for the batteryloss?
Thanks btw
Try miui 1.11.4 from whitehawkx with faux kernel cm-4.4
Sent from my LG-P999 using Tapatalk
Slomo5793 said:
woah.
Awesome answer
so do you think option 1 is better or 2?
does using cm decrease the battery efficiency?
if it does do you think the extra functionality in cm makes up for the batteryloss?
Thanks btw
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Good question, and I think that is totally up to you.
For example, my father and I both own G2x's, he runs a modified stock ROM (xboarder's ROM) and I run CM7. Without a doubt he gets better battery life than me, but at the cost of not having the features I have.
That may be a rough way of putting it but yes, using CM7 with all it's awesome features come with the price of not being as battery efficient.
The real question is if being less "battery efficient" actually means it's a bad thing. In my case it doesn't matter to me at all. Using the quick panel toggles in CM7, I only turn on data when I need it and I easily pull 15+ hours a charge because of it, assuming moderate usage.
Consider lotherius's tsugi rom, currently in version beta 3. It is my daily driver, stable, faster than 2.3.3 based roms, and excellent battery life. He has included a 2G toggle app that can automatically switch to 2g radio when screen is off to save lots of juice.
Sent from my LG-P999 using xda premium
I would like to compare two different kernels. I was wondering how or what kind of log i should run for both of them to compare their statistics. Never ran a log before, but I'm assuming its a kmsg log?
Sent from my LG-P999 using xda premium
oh do share results!
Sent from my LG-P999
ImDarkmatter said:
oh do share results!
Sent from my LG-P999
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I plan on it. I have been running Trinity T15 Max kernel for the past week and it has been the best performing kernel out of the three that I have tried- mazout, faux and trinity. However, yesterday I loaded mazouts latest OC kernel and it achieved a similar benchmark to trinity but does not feel as "fluid." But I would like to run a log in order to compare battery usage and other system functions to see which kernel is getting the best use out of my phone .
How exactly are you testing the system right now? Just with standard Android benchmark tools off of the play store? I don't know too much about them, but I'm sure there are quite a few Linux benchmarks that run in the terminal that may work better.
When you say "fluid" I'm thinking UI responsiveness, I'm thinking that may have to do with RAM latency and bandwidth, or possible regular filesystem IO latency and bandwidth.
Since Maz recently found out that the CPU governor cannot be changed it could possible be ruled out, except maybe putting it in performance or power save... I'm not entirely sure what the difference between the two are though.