Acronyms in the Nexus world... - Nexus One Q&A, Help & Troubleshooting

just wondering what some of the acronyms are and what they do
AVS
JIT
and some others I can't remember
I know JIT makes the phone faster and is unstable but just wondering really what AVS stands for in the kernels I download.

Jit is "Just in time" compiling, i suggest you wiki it, because it is a fairly deep subject, that i am not familiar enough with to explain.

AVS (Adaptive Voltage Scaling) - This technoloy gives optimum energy management delivery to processors, thus saving you battery.
JIT ( Just In Time ) - Also known as dynamic translation, is a technique for improving the runtime performance of a computer program.
Both of these features, are still in development stages. So they may cause instability to your device.

Thanks fella's I'm looking at JIT now in the WIKI and that explains why AVS is only in the undervolted kernels I've been looking at
850 ran pretty well now I'm running the 800 to see what I can do. if I can run this flawlessly I'll see about asking a dev to undervolt one for my phone even more As long as it doesn't cause harm.
-Charlie

Related

Why Overclock is not safe?

Hi to all, i would like to open a new thread on the following topic: we have seen various opinions about the safety of overclocking. With CPUScaler under Faria's 3.0.0.0 ROM, i can achieve sustained rates at 312 MHz. At the same speed, omapclock would reset my wizard. In my understanding, the TI omap 850 is temperature protected - and therefore any stress due to excessive power dissipation should be intercepted by the internal temperature probe and would result into a system reset. However, it would be interesting to know if anybody was actually able to COOK one processor with overclocking. Any information about it? what is your opinion?
I dont think this omap processor has been actualy been cook but i think that even if you get at a higher speed the system will be too unstable to run, some programs may not work at high speeds because they were not made for that speed power. (if im wrong correct me) the wizzard was made so that the processor would not consume alot of battery power.

[Q][after accid.] bad performance ONLY when phone isn't connected to a power source

Please read this first, I'm pretty sure the problem is linked to this accident:
http://forum.xda-developers.com/showthread.php?t=1056606
For a short time my phone is lacking performance when it isn't connected to something (slow menu animations, snatchy performance in games etc.). Quadrant Benchmark proofs that circumstance too. Without connection my device achieves 'bout 500 points, when it is connected it gets ca. 1000 points. With "CPU Master Free" I've clocked the SGS once to 1Ghz and once to 1,2GHz. In both cases the performance gets better, but still is not as good as when the phone would be charged. Only then it really runs smooth.
I hardly expect you guys can give me another solution than sending the SGS to the repair service, 'coz imho the GPU has suffered certain damage...
nidschki said:
Please read this first, I'm pretty sure the problem is linked to this accident:
http://forum.xda-developers.com/showthread.php?t=1056606
For a short time my phone is lacking performance when it isn't connected to something (slow menu animations, snatchy performance in games etc.). Quadrant Benchmark proofs that circumstance too. Without connection my device achieves 'bout 500 points, when it is connected it gets ca. 1000 points. With "CPU Master Free" I've clocked the SGS once to 1Ghz and once to 1,2GHz. In both cases the performance gets better, but still is not as good as when the phone would be charged. Only then it really runs smooth.
I hardly expect you guys can give me another solution than sending the SGS to the repair service, 'coz imho the GPU has suffered certain damage...
Click to expand...
Click to collapse
hmm, no idea about any of this so I might as well give you a bump
If I remember there was programs like SetCpu that would set different behavior on charge and no charge. But was a loong time ago. Since I have no idea what rom or kernel you use. Are you sure there is not program/setting/rom setting active that underclocks your SGS whilst not on charge?
Sorry, forgot to mention: I'm using Goatrip's ROM 1.9 with CF Kernel.
I just have a few apps installed, none of them would under- or overclock the system. And as I sad, i don't know how but for me it seems that the problem is linked to the accident. At least it's somehow related to the battery.

[Q] Kernel for CM7.2 Stable that allows OC and governor change

I have just updated to Cyanogenmod 7.2 stable on my P990 Optimus 2x (Fido Canadian version).
When I go to the CPU settings I cannot change the min/max frequencies or select a CPU governor.
I have done some research and found kernels like Vork and FauxDS, but they are for 7.1 nightlies so I am not sure if it is a good idea to flash them.
What I am most afraid about is the possibility of getting the black screen of death while my phone sleeps (it happened once already but it stopped after I changed to a different charger and reflashed CM7.2).
The reason why I want to change the settings is that there tends to be scrolling lag (my old HTC Desire Z was faster!) and there is also a bit of lag waking up the phone (lockscreen does not appear instantly when pressing power button).
Does anyone know what is the best kernel I can flash to enable frequency/governor changes in CM7.2 stable? I would prefer not to change the ROM if possible as I am kinda nooby in comparison to the XDA community in general. Thanks for any help.
I suggest you try Etana kernel. It has the things you need. Also use CPU master to set profiles and minimum CPU frequencies. I used something like min freq 352 MHz when asleep (don't worry doesn't drain battery) and I had no lag whatsoever.
heavencanwait said:
I suggest you try Etana kernel. It has the things you need. Also use CPU master to set profiles and minimum CPU frequencies. I used something like min freq 352 MHz when asleep (don't worry doesn't drain battery) and I had no lag whatsoever.
Click to expand...
Click to collapse
Are you referring to http://forum.xda-developers.com/showthread.php?t=1427646 ?
If so, do I just flash the zip off the sd card using ClockworkMod? And what are the differences between lite and DS?
Thanks.
All right, after reading, I determined I don't need LOC/HOC/DS as I don't intend to raise the max frequency, I just want to raise min frequency.
Installed the Etana kernel via CWM and it works. I can raise minimum frequency, though I still cannot see a governor option! Any idea how to get my governor setting back?
You can use CPU master and set some profiles. It's not exactly the same as governors but it's as close as it gets and it gets the job done pretty well. As far as I remember there were two governors for O2X - powersave and performance. I've always used performance and I can't tell if there's a HUGE difference in battery usage. I guess performance utilizes higher CPU frequencies when the device is asleep and somehow scales faster to even higher frequencies when needed to. But this might be complete crap as I am not too much into how CPUs work...
And please use the THANKS button (right below the user name), it kind of forum etiquette and it keeps people motivated to help others. Thank the Etana developer too.
heavencanwait said:
You can use CPU master and set some profiles. It's not exactly the same as governors but it's as close as it gets and it gets the job done pretty well. As far as I remember there were two governors for O2X - powersave and performance. I've always used performance and I can't tell if there's a HUGE difference in battery usage. I guess performance utilizes higher CPU frequencies when the device is asleep and somehow scales faster to even higher frequencies when needed to. But this might be complete crap as I am not too much into how CPUs work...
And please use the THANKS button (right below the user name), it kind of forum etiquette and it keeps people motivated to help others. Thank the Etana developer too.
Click to expand...
Click to collapse
Thanks for letting me know, I didn't realize there was a thanks button at first haha.
Fixed!
As for now CPU Master in his profiles let's you choose governor. We have only 2. Power save nd Performance.
Sent from LG 2X using Tapatalk 2 Elite

[INFO][GUIDE] Overclocking information, governors, profiles, problems, solutions, FAQ

Updated As Of 30/06/2013
Code:
#include
*
* Your warranty is now void.
*By you using my Mods, Roms etc...
* I am not responsible for bricked devices, or dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed.
* Please do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
Hello existing members, and new comers, this is a thread dedicated to people's temperatures and clock speeds on this phone. Doing this we can learn how the Desire C handles heat in certain circumstances, and if it is indeed the reason why people cannot overclock as high as others.
However I would like to state to anyone who tries any of these tips and tricks mentioned by both me and other members, we are NOT LIABLE for any damage you may cause to your device. I guessing most of you guys are aware of this, but I thought to make to clear to anyone who doesn't know these things.
To the existing fellow Desire C overclockers I have wrote some notes of which can improve the experience with your phone, they are as follows:
Use different frequencies instead of a solid one, for example:
In certain CPU management applications you can change how the CPU behaves when the phone is in a certain state, this meaning things such as; charging, low battery, sleep etc...
These adjustments are known in the android community as "profiles" there is currently one one CPU program of which I know about what can do these "profiles" and that's setCPU. (if you guys know any others pm me, or post in this thread and I will make a list of apps available)
When you use your phone for music especially files with a high bit rate (320kbps) when you lock the phone the music may stutter, or "lag" let's put it. Now I have found a way to greatly reduce this "lag" this is to go to where it states the lowest CPU frequency and turn it up from 122mhz to 2xxmhz. This fixes lag because when the clock speed is at such a low state, functions and background services such as music, sync etc... are preformed much slower, hence the "lag".
One of my main points is about the phones CPU "governor" this basically controls how android will handle your phones cores, and resources currently there are many available in the current kernels, however, as more kernels come there may be more "governors" available on our devices these include:
SmartassV2
Interactive
Lagfree
Conservative
Loinheart
Ondemand
Preformance
All of these governor's will make a slight or more noticeable change to the performance of your phone there will be some screenies of my setup below the main post.
The overclocking application I use is called SetCPU thus is available here on xda for free, but is also paid for on both the android market and the amazon market place. If you wish to get it from xda, for now search it because I will add the thread link to this post soon.
As mentioned before if you have issues regarding overclock your phone be sure to post and I and other will be glad to help out, remember no question is stupid.
The kind of information of which will be posted and discussed in this thread is:
Temperatures of devices cores.
Screenies of peoples "profiles"
Selected governors
Questions regarding overclocking
Solutions to problems for users having issues
The five posts after this one are as follows:
CPU profiles, examples and what they do.
Thermal throttling, what it is and also what concerns it.
Governor, recommended ones and more in-depth of what they do.
How to flash New kernels for new users.
Questions and answers (FAQ).
So let's fill this thread with useful information and questions regarding all this overclocking business
But please do not spam this thread with useless information because we do not want this locked, as I could be a resource, also if you guys want this post sticked please say so and I'll see if it can be done.
Overclocking profiles
Okay as mentioned before in the above post I will post some screenies of my current profiles, of which I prefer. However you can use my settings as a reference and create your own, if you do make a screenie of your setup and post it to give others more options, or more understanding of what these are, and what they are about.
A little more indepth about CPU profiles is that let's say if you wanted to conserve more battery during the night for example, you could create a profile saying what clock speeds to run at, at particular times this meaning from 12AM-8AM with a clock speed of 122mhz-386mhz this configuration will save more power than 122mhz-600mhz or 767mhz or even 806mhz in an overclockers case.
For example my clock speeds are:
122mhz-3xxmhz in sleep mode
806mhz-806mhz when charging
122mhz-4xxmhz from 2.00AM to 8.00AM
2xxmhz-806mhz when doing tasks in sleep mode such as titanium backup.
Update: It appears with some configurations, that if music is playing the lag may be present when waking the device.
Potential thermal throttling
Just like any other computer weather it is a desktop, laptop, phone or even a tablet, and no not the ones you eat lol
All have thermal limits, also known as thermal throttling which is the CPUs thermal limit, when this reached the system may become unstable,reboot,or turn off entirely depending on what the device is coded to do in these situations.
I have a theory of why some people's phones can overclock higher than others without issues, or really high core temperatures. I think it is down to the environmental variables which include:
Humidity, the more humid the environment is the harder it is to cool a device, due to a higher density of water being in the air unable to transfer heat effectively.
Heat, this is a big problem for computers what are overclocked, more speed means mote heat! Unlike a gaming computer, where there is a whacking heatsink to cool the CPU efficient enough to prevent overheating
However, for any android phones, tablets it is a different story, the cooling system inside these devices is known as static cooling, meaning there is mire heating being trapped inside the system and isn't being moved my fans etc...
Now I believe if the people having issues with overclocking should post their temperatures of their CPU to see if there is a difference between devices which can overclock far, and the ones that can't.
To get more information on temperatures I think anyone who is overclocked should post their temps both idle, and after playing some games etc...
For example, using the setCPU application widget on my home scene I can read my temps of my CPU on the fly, if you can't provide a screenshot of this for what ever reason then post you information like below:
IDLE: @122mhz-806mhz is around 18-22 degrees.
AFTER WORK (GAMES,APPS ETC...) @122mhz-806mhz is around 32-39 degrees
If people post these figures then we will know if there is much of a temperature difference between devices.
Let's get some boss results and figures to help figure out potential crashes,reboots etc... Some users have experienced.
Remember, that thermal throttling, slows down the CPU, so it doesn't cause damage to it
CPU governors what are they?
In the brief explanation in the first post a Cpu governor basically tells android how to access the hardware, in this case the CPU. Basically each governor has a set amount of variables of how long processes can use a thread on the CPU, or how the system handles simple requests, the governor controlles all of the things android puts through our hardware.
Intact a CPU governor is so low level it is actually inside the android linux kernel, meaning that the kernel compiler needs to code these into the kernel to make them available.
There are many governors available, of which can be used under certain circumstances for example:
Conservative, this governor will try to cut the amount of clock cycles the phone will process data with, hence the name conservative meaning it will save power where possible, but resulting in lower performance.
Preformance, this governor is used to squeeze every little bit of performance out of your system possible, great for gaming but not so great for battery life.
I will list other governor functions later on.
Currently the governor I recommend is based solely on use, I mostly use Lagfree which is both good battery life and gaming performance.
If you guys use any others governors post it with why you think it is the best config for you, including your temps, clock speeds etc...
Remember this thread is about gathering information about the thermal relation between phones what can overclock far, and ones that can't.
Recommended Governors and schedulers​
Flashing a Boot.img
Recently I have had messages from new users who are confused about installing this rom, Well i'm here to help! So I have written a short guide on how to flash the rom, kernel etc... In short simple steps:
Copy the newest nameless to your sd card
Install the rom as normal
When it says reboot after installation is finished, uncheck that box and go back into recovery
Then on the main recovery screen there will be a reboot into fastboot, click that. Note: have your computer plugged into your phone before this, because it will connect better.
Next on your computer find the nameless rom package open it and find a folder called, "Kernel_boot_img"
My advice is to try the 767mhz kernel first, see if your phone boots if it does try the 806mhz after, if it also boots you have a high over clocked phone
You will need to flash the boot.img as normal (fastboot flash boot boot.img), whatever kernel it is (767, or 806mhz) And don't forget the wipe the cache after installing the new kernel as this could cause problems to fix this use this command, "Fastboot wipe cache" then followed by "fastboot reboot" then your phone should reboot.
TO CLEAR ANY CONFUSION:
Don't flash both kernels at one time, it will not work like that try one at a time to see if it boot with success.
If it doesn't boot with one of the kernels, then try the other one most phone work with the 767mhz kernel, while others work with the 806mhz
If nothing else work message me and I will try to help, however your phone should work and boot with success with these step, be sure to follow them closely.
Good luck, I hope this helps any new comers having problems.
Y U NO Work? FAQ
Y U NO WORK! Is often said by people who are angry your phone isn't working with some kernels, I am going to list some of the most asked questions new users have sent me regarding this subject:
Q: My phone won't boot, instead it is stuck at the green and white "HTC" screen.
A: All I can say my friend is try the other kernels available on the nameless thread there are currently two of which are 768mhz and 806mhz if you have tried both you unfortunately have a phone what doesn't like extra heat.
Screenshots
Screenshots coming soon
Reminders about thread, Kernel history, Member temps etc...
If other users require extra help please post a question below, me and other members will be glad to help you out and get you on your way. However, remember that this thread needs to remain clean! No spam posts, and no flaming arguments!
This thread is a home to share the following things,as mentioned above, and try to resolve potential issues regarding overclocking these include:
Phone CPU temputures
What kernels work, which ones don't
The highest temputures you have, compared to other who cannot overclock
Screenshots of profile settings and temps
XDA Kernel history​XDA member reported temperatures and clock speeds​
Neoyoli
767 oc kernel - performance/deadline
IDLE: @767mhz-767mhz is around 27-31 degrees.
AFTER GAMING, ANTUTU: @767mhz-767mhz is around 35 degrees
nikhil16242​I use 722mhz max - 320mhz min lagfree-deadline
Temps:
Idle : 28-30 'C
Charging : 34-35 'C
Charging + Playing a heavy game like shadowgun : 40-41 'C​
einstein.frat
I leave it at 722max 320min it is 30'c 87'f I use smartass2 and sio
Whoamigriffiths
normal temps quite high 32-35 after antututututututuutututu 37.2 @806mhz, performance governor ​
Wow its War and Peace!
Awsome work , thankyou. I'll sort out my temps etc later tonight as I have to go out now . and I'll hit you up with some much deserved thanks . For some reason my counter says I've used 8 already and I've not used it yet
Thanks Richard . I'm trying my best to resolve issues other members are having. I'm soon going to make another thread to help out with issues on roms, cache errors etc... So look out for that one.
Hopefully this thread can be stickied, so all new and existing members can see it without creating new threads with the same questions, as it is a waste of space.
okay, here I go: me and my phone live in London, today the weather turned to nice lol.
767 oc kernel - performance/deadline
IDLE: @767mhz-767mhz is around 27-31 degrees.
AFTER GAMING, ANTUTU: @767mhz-767mhz is around 35 degrees
And, strangely since I'm using either V6 SuperCharger (it has a kernel panic tweak) or the performance/deadline combo, the phone did not reboot on 767, previously I had to downclock to 722 to make it stable, because it rebooted under heavy usage like gaming.
I will try different combos and report back if it stayed stable.
But I was wondering if the issue with the 806mhz kernel was due to heat, the phone would still boot up, isn't it?
Re: Overclocking information, governors, profiles, problems, solutions and FAQ
I leave it at 722max 320min it is 30'c 87'f I use smartass2 and sio.
What's good configuration anyone know?
I know old settings that are good are
Ondemand-noop
Ondemand-deadline
Lionheart-sio
Lagfree-sio
Smartass2-sio
Hmm that might not be strictly true, a CPU can get hot after first boot up very quickly just like any Computer, I have some other ideas why some peoples phones don't boot too, i'll post them in my thread and update it.
I use 722mhz max - 320mhz min lagfree-deadline .
None of the 800mhz OC kernel works for me.Doesnt even get to boot animation
Temps:
Idle : 28-30 'C
Charging : 34-35 'C
Charging + Playing a heavy game like shadowgun : 40-41 'C
I really dont think its due to high temperature (but one can never be sure about these things) as even at 41 'C the phone doesnt actually reboot.It only reboots on setting a higher OC like 767mhz
Interesting, nikhil16242 I will try to get shadow gun and use the same clock speed as you and compare my temps to yours, see if there is a difference between them.
I have another idea what it could be, and i think it is related to what frequencies each phone supports maybe einstein.frat could try something slightly under 806mhz and see if it works. But i think it is how to frequencies are counted on the kernel, maybe if einstein.frat can change some of the values, to lower variables it may work I need to look this up any input about how kernels work would be helpful.
have any of you guys tried to flash the 806mhz kernel WITHOUT wiping the cache through fastboot?
Re: Overclocking information, governors, profiles, problems, solutions and FAQ
Yes .
Tried all possible combinations like flashing the rom cleanly and flashing kernel,flashing kernel with and w/o wiping cache .
Sent from my HTC Desire C using xda app-developers app
Did the first overclock kernel work for you, by zeroprobe?
Re: Overclocking information, governors, profiles, problems, solutions and FAQ
Yeah, oc kernel by zerophobe did boot for me, but I think it used "fake" overclocking since benchmark scores where more or less the same as stock kernel .
Sent from my HTC Desire C using xda app-developers app
Well i think figures should be changed inside the kernel, I don't know what maybe some of us can experiment with unstable kernels. It is two things heat, or how the kernel is coded, which ever way we need to find out, hopefully overtime we will.

Overclock CM11

Hi there,
really sorry if this has already been around, but i've been searching this forum up and down and didn't find a thing.
Anyways, i was wondering how i could enable overclocking under cm11 nightly? Could anyone point me towards a solution? Thanks
Well ...
http://forum.xda-developers.com/droid-4/development/5-0-custom-oc-kernel-t3041512
It should work (in the past it works)
Install it on your Cyanogenmod Rom
Fervi
ferviverus said:
Well ...
http://forum.xda-developers.com/droid-4/development/5-0-custom-oc-kernel-t3041512
It should work (in the past it works)
Install it on your Cyanogenmod Rom
Fervi
Click to expand...
Click to collapse
There's a guy who said that that kernel doesnt work on cm11...it work's for you in the past?
For CM11 and other AOSP 4.4 ROMS, the most fully-featured and overclockable kernel is JBX. You can use the one intended for the RAZR.
Joojoobee's is good, and certainly the best for Lollipop, but due to its extra voltage management stuff the JBX kernel has a higher overclock ceiling.
Use the newest kernel from here.
Boot into Safestrap, make a backup in case something goes horribly wrong, then flash the package to start up the installer. In the installer, don't install any of the tweaks, at least a couple of them cause instability for our phone, and don't bother with the init.d stuff. Just install the kernel itself and Trickster Mod. Trickster, FYI, is probably the best app for managing JBX, but other apps can as well.
Done. Reboot phone, hopefully it won't bootloop, once back up increase speed until it starts freezing when you try to use it, bump voltage 10-20mv, find ceiling again. I think the JBX thread has better/more detailed instructions, but that's about the gist of it.
Maximum advised voltage is 1490mv iirc, don't try to even approach that unless you want to cook eggs on the back of your phone.
Thanks a bunch!
After messing around with both solutions, Jojobee's solution gave me a bootloop but the other one worked.
However i can't seem to get past 1300mhz when overclocking, that seems to be the limit. I was aiming to try to reach 1400, any idea how i could go about that? I can't seem to find an option to set the max frequency higher than 1300.
Well i was playing a little with JBX kernel..these are my conclusions:
- Kernel install/works fine if you don't install 10% battery mode..otherwise you are goingo to have android crashes
- Kernel performance it's below than current cm11 m13 stock kernel...i believe is due to full scale freq that it has...cpu spend a lot time switching from one freq to another...if you overclocked you will have almost the same performance than NON-OC stock kernel..that's why stargo applied and later reverted full scale on stock months ago...meaby if JBX kernell would have support to boost driver (like cm12 OC kernel) it would be better...but it hasnt...
So my conclusions...dont waste time on JBX kernel...sorry my 4 my english
Enviado desde mi XT894 mediante Tapatalk
Milp said:
However i can't seem to get past 1300mhz when overclocking, that seems to be the limit. I was aiming to try to reach 1400, any idea how i could go about that? I can't seem to find an option to set the max frequency higher than 1300.
Click to expand...
Click to collapse
I don't think you can set the CPU higher than 1.3ghz, at least not in the way you're thinking.
In the case of the JBX kernel, you overclock the Main Processor Unit (MPU) speed. I don't remember what tab it's under in Trickster, but it should be the same one as the voltage settings. I couldn't even begin to guess where it'd be as far as other apps.
The default is 100mhz. This is multiplied by each frequency step; e.g. 1.3ghz is actually a 13x multiplier of the base 100mhz.
So to obtain 1.4ghz(ish), simply increase the MPU clock from 100mhz to 108mhz, since 108*13=1404.
If you're lucky, you'll be be able to do this without needing to touch the voltage, if not...read the FAQ in the JBX post, because I don't remember offhand exactly how to set voltages :v
Once you know how, I would think a 5-10mv bump would be all that'd be needed to stabilize most CPUs for 1.4ghz.
fyi, ignore if you already have stuff for these:
Antutu is a decent app for both testing stability and checking to make sure you're not hitting the heat throttle.
Cooltool isn't a bad thing to use either, if configured to show CPU speeds, since it'll show you if the CPU has been forcefully throttled back (if the CPU gets too hot, it'll forcefully change the maximum multiplier to 10x/11x to protect itself from baking; if it does, back your voltage off and be happy with whatever speed you've attained).

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