Develop Bugs

overclocking dhd

I have recently rooted my dhd and currently running CM7. Using the cpu setting within the performance menu I am wondering what peoples thoughts are on a noticeable but safe increase of cpu speed. its set as 1017MHz which i believe is default. I am told I can run anything up to 1500 safely. can anyone confirm this and also tell me what kind of result (performance and battery life) i should expect.
thanks

Well, I use Android Revolution HD (a sense rom, meaning heavy UI!) and i overclock to about 1.3GHz. In terms of battery life when it's awake, it seems a drain a teeny bit more readily, but I've never had a freeze on sense (quite rare)
On stock it underclocks to let the processor max at around 400MHz when the screens off, so that helps to really save a lot of battery on standby. On CM, I'd expect it'd feel more or less the same in terms of performance after you hit 1.2/1.3GHz

hmohammed43 said:
Well, I use Android Revolution HD (a sense rom, meaning heavy UI!) and i overclock to about 1.3GHz. In terms of battery life when it's awake, it seems a drain a teeny bit more readily, but I've never had a freeze on sense (quite rare)
On stock it underclocks to let the processor max at around 400MHz when the screens off, so that helps to really save a lot of battery on standby. On CM, I'd expect it'd feel more or less the same in terms of performance after you hit 1.2/1.3GHz
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thanks for the reply mate. going to try out revolution HD soon i think. have you overclocked using a third party app or is there one built into that rom?
also im a little confused by the governors. 'on demand' is the default governor. Does that mean it will only use the max selected cpu speed when necessary? would you recommend using a difference setting?
cheers

rhodri11 said:
thanks for the reply mate. going to try out revolution HD soon i think. have you overclocked using a third party app or is there one built into that rom?
also im a little confused by the governors. 'on demand' is the default governor. Does that mean it will only use the max selected cpu speed when necessary? would you recommend using a difference setting?
cheers
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Click to collapse
The CPU is managed by the ROM itself. You can tweak it yourself by using setCPU (or similar), but I can advise you not to. Can't help you with the governors buddy, since I dunno what it is
Cheers

darude0306 said:
The CPU is managed by the ROM itself. You can tweak it yourself by using setCPU (or similar), but I can advise you not to. Can't help you with the governors buddy, since I dunno what it is
Cheers
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nice one dude

I'm running cm7 and I'm overclocked to 1.5 ghz. It's been totally fine for months.
Sent from my Motorola Startac running Atari 2600 software!

rhodri11 said:
thanks for the reply mate. going to try out revolution HD soon i think. have you overclocked using a third party app or is there one built into that rom?
also im a little confused by the governors. 'on demand' is the default governor. Does that mean it will only use the max selected cpu speed when necessary? would you recommend using a difference setting?
cheers
Click to expand...
Click to collapse
Lucky you picked a linuxhead!
The system itself has a daemon (background process built into the system) that handles overclocking. It's all explained on the page and also on this thread:
http://forum.xda-developers.com/showpost.php?p=14638641&postcount=34279
You can use another app (like SetCPU) but the daemon usually handles screen off's quicker. The governors basically determine how the processor frequency is changed. I'll explain the common ones:
Performance - Runs at highest speed, so if you have a range of 200 to 1.3G, it'll stay at 1.3G all the time, not usually the best
Ondemand - The universal default for phone overclocking, it only changes the speed up after a certain percentage of the CPU is used, and it switches on the fly, so if the CPU is used too much at 400MHz, it'll ramp it up to maybe 600 or 800, and if it's still overused, it'll put it up to maybe 1 or 1.2G
Conservative - This is like ondemand, except it makes the changes more gradual. It can give noticable lags in the foreground at times, so this is mainly used when the phone is asleep (screen off)
Smartass - This governor is like ondemand, except it'll less readily switch frequencies to higher values when it detects the screen off. This isn't really used because the overclocking daemons take into account the phone being awake or not
Basically, there isn't really a need to change governors, only really frequencies if anything. The thread, however, does tell you how to change governors.

Im using latest LeeDroid GB 3.2.1 and to be honest with the work he's done with the Kernal (3.1.8BFS) I have found that the ROM is a lot MORE responsive without me overclocking the CPU.
Im not really sure how it all works, but I guess doing this on different ROMS has its own different out comes.

overclocking has me confused too, is there really that much of a benefit in it? how much will i gain from it?

toby_lerone said:
overclocking has me confused too, is there really that much of a benefit in it? how much will i gain from it?
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There is a benefit when you use certain apps, or even sense itself. For example, I've never had sense ui freeze, or go slow. The under clocking helps to improve the rubbish battery life when your phone is asleep.
In terms of measuring the gain, I have no idea. Really, I'd think you could use a process heavy app, or benchmarking app and see.
There's also loads of guides on overclocking to help out! (that's how I got the hang of it! )
Sent from my Desire HD using XDA Premium App

For the need on OC, it depends on the kind of apps u're using. If u're happy w a non OC DHD, its totally up to u.
But for the UC, it works as a terrific battery saver, mich better/effective than other battery saver soln on market

The safe range depends on the DHD as the manufacturing changed even though same part, i'm OC 1.5GHz "On Demand" profile and under clock 245MHz on screen off "Power Save" profile.
Getting approx a day usage on Lee 2.1.

Undervolting

I wanted to know some more about undervolting and was hoping someone could help and explain a bit. Basically, what I'm seeing is when I undervolt my device on the max side of things, eventually the device freezes and needs a battery pull or reboots. When I don't touch the max voltage values and only drop the min values the phone seems more stable and doesn't reboot. Can someone explain if my thinking of only undervolting the min values is correct and why this may be happening. Also, what would be the proper way to undervolt the phone? I have been using system tuner to do so on deck's 1.3 ROM using the Lee +sbc kernel. Thanks for taking the time to read this and for all the helpful responses.
Sent from my Decked Evo running Lee+sbc... It's easier this way.

I have this same question! I was trying to figure this out becuase the freedom kernels have something to do with under and over voltage to allow better OC? not sure on why the you would need and over voltage to over clock?...

What is your ROM/Kernel setup?
Remember that undervolting and underclocking are two different things. Over/underclocking, via apps like setcpu, raise/lower the frequency at which your processor operates. Over/undervolting raises/lowers the power voltage available to your processor at any given frequency. This can potentially cause problems if you have a kernel set to undervolt your processor while running an app like setcpu to overclock it. This may be why you are seeing issues with your phone.

pmacevad said:
[snip]
I have been using system tuner to do so on deck's 1.3 ROM using the Lee +sbc kernel.
[snip]
Sent from my Decked Evo running Lee+sbc... It's easier this way.
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Concordium said:
What is your ROM/Kernel setup?
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OP clearly states he's running Deck's 1.3 and Tiamat 3.3.7 (aka LEE kernel)
OP should also state Deck's ROM version but I'm assuming 1.3d as it's most popular next to 1.3 Stable.
I'm running the same setup - Deck's 1.3d with LEE SBC. I'd like someone to explain (as the OP also asked) the difference between the MIN and MAX sides of the undervolting equation please.
(I do understand underclocking AND that it is a separate and different animal and for the record, my EVO is UC'd to 128/499MHz and using Smartass governor)
I'm just not sure what I'm looking at in the ST interface (what's the first number and what's the number in [] brackets?) and also not sure just why there is both a min and max voltage for each frequency and how it affects performance.
Thanks much for any inputs.
J.

I use vipermod and terminal emulator for aosp roms its much more stable than using system tuner and you can drop all voltages with a single command it all depends on your particular hardware but typically around -100 the phone will lag or freeze i usually stick to -50 at stock voltages and -25 on overclock i never overclock over 1075mhz as anything higher and my phone tries to cook my fingers however now im oc to 1.6ghz on my et4g with a 200mhz min and it stays nice and cool like it was clocked at 1.2ghz stock the exynos is capable of clock speeds up to 2 ghz but the phone doesnt handle those speeds well similar to the evo not liking anything over 1.19 at 1.2 on the evo theres a good chance of frying the logic board or bursting the battery from heat if you overclock dont undervolt too much as it makes the processor get really really hot due to it having to work harder from lack of energy to power it
We are legion, for we are many
Sent from my Anonymous DeathStar in the depths of GalaXy S2

To answer the min/max at each freq min is the lowest voltage that freq will run while idle max is the highest voltage the freq will run while in use the voltages are depenedant on the load running at the particular freq ie how many process' are running the more process' the higher the voltage required to power the processor
We are legion, for we are many
Sent from my Anonymous DeathStar in the depths of GalaXy S2

Is there an app the will show actual voltage the CPU is using in real time?
Sent from my Synergized Aggressive Lionfish Evo using the XDA app

bmw pro will u can set the mv on the widget or set recording in the app and it will log the info
We are legion, for we are many
Sent from my Anonymous DeathStar in the depths of GalaXy S2

I had a similar issue with undervolting and underclocking. I was setting my CPU min/max to 128-499 MHz and undervolting to -75 or -100 using Lee with Smartass v1. But I was getting too many random reboots and freezes on each ASOP rom I tried (e.g. Deck 1.3d, CM7).
I've been playing around with these settings. I changed my CPU to 128-576, no undervolting, and SZ 2.2.1 with SavagedZen governor. I haven't had any random reboots and my batter life is about the same...plus my phone is MUCH snappier. I'm still getting a little screen on lag but not nearly as much as I was at 128-499 and undervolted.
As a note, I normally run Deck 1.3d as my daily driver but for the last couple days I've been running KWIQ. It's definitely giving 1.3d a run for its money as becoming my daily driver.
Anywho, are there any rules of thumb with undervolting and underclocking? Like is 128 MHz is too low with -100 undervolting? Or are these things pretty much phone dependent? I know each phone seems to respond different to these things.

-EViL-KoNCEPTz- said:
To answer the min/max at each freq min is the lowest voltage that freq will run while idle max is the highest voltage the freq will run while in use the voltages are depenedant on the load running at the particular freq ie how many process' are running the more process' the higher the voltage required to power the processor
Click to expand...
Click to collapse
Thank you. That made good sense to me. Question then: is it suggested/typical to drop min and max by equal amounts or is it typical to drop min more (so there's juice for the proc under load but maybe being more aggressive with the sleeping/idle side of things or can the proc run at a given frequency at different voltages)?
jackfrost909 said:
I'm just not sure what I'm looking at in the ST interface (what's the first number and what's the number in [] brackets?)
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Click to collapse
Are you familiar enough with ST to shed some light on this? Please if so. Thank you.
detcup4evr said:
Is there an app the will show actual voltage the CPU is using in real time?
Click to expand...
Click to collapse
-EViL-KoNCEPTz- said:
bmw pro will u can set the mv on the widget or set recording in the app and it will log the info
Click to expand...
Click to collapse
Though I have to recheck this I don't remember BMW showing the voltage being used at each frequency just the overall voltage draw. If you know otherwise or another tool that does, please share
Thanks for all the help.
J.
--
Tapa Tapa Tapa..
Let's see.. My phone flies, my battery doesn't suck.. and your point was.... ?
OG EVO - Deck'd and LEE'd because it's just better this way.

Lionfish kernel
Has anyone tried undervolting with lionfish kernel on SENSE Roms, is it stable?

einstein562 said:
Has anyone tried undervolting with lionfish kernel on SENSE Roms, is it stable?
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Click to collapse
I use aggressive and it works well but some phones don't like it, hopefully I can get vipermod to work, and that will allow you to adjust each frequency independently
Sent from my Synergized Aggressive Lionfish Evo using the XDA app

I actually just got rid of lionfish aggressive on MikG3.11
I had a lot of lagginess, but battery life was really good... Back to anthrax for me, lionfish was based at one point on freedom kernels I thought, maybe one of those would be better...?
What's the best thing to use to control undervolting on sense roms?
Sent from my PC36100 using Tapatalk 2

Is the battery life improvement substantial when undervolting?
I have governators set at 240-650max and am getting decent life on my ics savoca kernel.
What % improvements are obtained?

Well I don't have logcats and scientific evidence, but I saw about 12 hour days, with moderate use, everything syncing, lots of text a few calls, hotspot for an hour or so, some web browsing, but the random revolts and lagginess on that was horrible, freedom was better.... It's worth it to underclock
I have everything set to 384-1152.
Different governors for profiles, screen off @ conservative because I have a lot to sync
Sent from my PC36100 using Tapatalk 2

Best Overclock settings specifically for the Play?

I'm using NoFrills CPU and want to find the right balance between overclocking, performance and battery...
What speeds and governors are everybody using for their Plays?

I'm using 1.2 Ghz max 130 Mhz min with SmartassV2 and sio. All seems okay to me.

I'm using 921mhz-122mhz intellidemand2 with sio governor and everything is smooth + battery is great
Sent from my R800i using xda premium

1401Mhz Max, 180Mhz Min (when Screen On), 785Mhz Max-180Mhz Min (When Screen Off)
Noop + InteractiveX
---------- Post added at 12:27 PM ---------- Previous post was at 12:26 PM ----------
1401Mhz Max, 180Mhz Min (when Screen On), 785Mhz Max-180Mhz Min (When Screen Off)
Noop + InteractiveX

So many different settings!
Was hoping there'd be a 'common' setting that everyone kind of determined was best.
Thank though.
Still interesting, and would like to see what more people are using still.

Mines currently 1.613 Ghz Max, 245 Mhz Min. Virtuous Governor, Noop I/O Scheduler.
On intensive apps I change the max clock to 1.901Ghz however this I don't recommend for most people.
I also only use 1.9Ghz when using Android 2.3.7 with DoomKernel, as only that Kernel seems to allow for voltage changes... Which i apply when using that kind of speed, whereas the default voltages are much higher for that clock than I usually set.
Everyone's Play is different, and not all Plays can sustain high clocks at specific voltages. You need to find your own 'sweet spot'.

Spizzy01 said:
You need to find your own 'sweet spot'.
Click to expand...
Click to collapse
Is there an app for that?

No.
You need to increase your clock little by little until you're happy. Then, if you're on GB using DoomKernel you need to lower the voltage as much as you can without it crashing if you want it perfect.
Most people simply oc though and don't bother with the voltages, but it will reduce power consumption and extend the life of your phone with the OC enabled.. As normally running your CPU past its specification will wear it out faster.
Sent from my R800i using xda premium

As DiKeJ said in his ROM thread:
In my opinion, interactiveX, and frequency of CPU 364.8-1305.6MHz gives awesome stability and performance
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:good:

TRUE FACT.

you should use a kernel that allows you to undervolt... there was some article with the galaxy S3, where they tested different settings with OC+UV and YES, Under Volting gives better battery life!!
A lot of people here say, that UV will have no effect on battery, but they have no idea how a processor works... so they just should stfu!!

ElementalX kernel - what's the fuss about

Hey guys
Before rooting my tablet I want to know something. Whats the fuss about this specific kernel? I literally see it everywhere ( well done to the dev )
I kinda want to overclock my nexus too 1.7ghz but Im not sure that kernel can do it? I also want amazing battery life I get around 7.5 already so by no means is it bad
J
Sent from my Nexus 7 using xda app-developers app

I've got elementalx on my nexus 7 2013 : it works perfectly on 1.7ghz... And this kernel has some cool features like double tap to wake... For the battery, you can underclock but while you overclock just a bit, the battery life will be OK
So, flash it ! ?
Térence
Sent from my Nexus 7 using xda app-developers app

JackHanAnLG said:
Hey guys
Before rooting my tablet I want to know something. Whats the fuss about this specific kernel? I literally see it everywhere ( well done to the dev )
I kinda want to overclock my nexus too 1.7ghz but I'm not sure that kernel can do it? I also want amazing battery life I get around 7.5 already so by no means is it bad
Click to expand...
Click to collapse
I didn't know there was any kind of a fuss! I think that we are all lucky in the sense that we have multiple good choices for kernels on the Nexus devices and most others in general.
It goes without saying that any custom kernel is going to give you the ability to overclock and it just boils down to what the max MHz is that any specific device can handle. Not that I've tried it but I've seen claims of 1.9 MHz and higher (ElementalX) running fine but each device is going to be different and I personally don't see the point of overclocking that high. I've had mine at 1.7 and 1.8 MHz to run some benchmarks, try different governors (elementalX & ondemand) and get an idea about battery life at those frequencies. Did all that so I can get a comparison to what I see running 1.6 MHz which is what I use everyday, that plus the gpu is set at 450 MHz while using the ondemand governor for both cpu and gpu. I do have to say that my N7 ran very well at 1.7 and 1.8 MHz but "my" goal is to get the best combination of performance and battery life, for my use. I generally see 7- 10 hrs of screen on time which includes watching video and some gaming. Not using any third party apps to control the kernel, mostly default settings when using the aroma installer, slight undervolt for 384 MHz, I don't use DT2W or S2W,. Basically... it's just too easy to install the ElementalX kernel, not worry about having to dial it in and still see a noticeable improvement in performance and battery life. No fuss, no muss!

What are your settings?
!PimpedOutNexus7!

shaolinz said:
What are your settings?
!PimpedOutNexus7!
Click to expand...
Click to collapse
Aroma installer;
Set each core separately = no
Max Cpu Frq = 1620Mhz
L2 cache and bus = elementalx
Undervolt = 850 min
Thermal = run hot. Mine never gets hot at 1.6 MHz and this way you don't have to worry about thermal throttling.
Max GPU = 450 MHz
Gpu governor = ondemand
i/o scheduler = deadline.
Sleep/wake settings = None
Other settings = use stock ondemand settings. enable max screen freq, enable usb fastcharge, disable magnetic screen off, disable fsysnc, all other options unchecked,
---------- Post added at 06:51 PM ---------- Previous post was at 06:42 PM ----------
You can use the elementalx governor which does a great job and does improve battery life. In the other settings page leave "use ondemand governor' unchecked and check the box for "gboost." For gaming I personally like to leave mine set up with the ondemand governor, seems just a little bit smoother with less frame drops. You can try both to see which works better for you.

Thanks a lot in will let you know how it goes ....great help +1
!PimpedOutNexus7!

Hmmm feels like its running hot
!PimpedOutNexus7!

[Q] CPU Temperature exceeding 80°C! How dangerous?

Hi guys,
I understand that some heat when running resource intensive applications and games is to be expected but I believe I've passed into the danger zone, so to speak. When playing XCOM my CPU temperature quickly exceeds 80°C. From my googling on the matter I have come to assume that a temperature as high as 80°C is dangerous for the hardware of the device, but I have had trouble finding upper threshold limits for the model itself.
I guess my questions are as follows:
1) How damaging would running the CPU at 80°C for an extended duration (1hr +) be?
2) What would you consider the max acceptable CPU temperature to be?
3) Assuming it is as bad as thought, what are my options to reduce the CPU temperature, short of avoiding the problem applications? Underclocking seems to be a common suggestion, but I get the feeling that XCOM, or similarly taxing applications, may just fail to run or become incredible sluggish under such constraints.
My device is rooted and running Lean Kernel v2.4 along with the w03Slim ROM. Found here: http://forum.xda-developers.com/showthread.php?t=2638116
I've done similar test runs in the Temasek kernel with the recommended configurations through Trickster Mod and there is no difference, the CPU still exceeds 80°C when playing XCOM. After a week or so of googling, searching the forums, and digging through device manuals I feel like I'm spinning my wheels.
Any insight or advice you all might have is greatly appreciated.

Solved!
http://forum.xda-developers.com/showpost.php?p=52464294&postcount=2495
Sent from my SM-N900T using XDA Premium 4 mobile app

Does not exceeds to 80c now?

You can try a custom kernel, i would recommend you BioShock kernel, with conservativex, max freq 2.2 ghz and undervolt 25 mV... No more over warming for me, great performance and battery life
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel

dramitt_live said:
You can try a custom kernel, i would recommend you BioShock kernel, with conservativex, max freq 2.2 ghz and undervolt 25 mV... No more over warming for me, great performance and battery life
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel
Click to expand...
Click to collapse
Agree with this post, conservativex is a great governor to keep your cpu in check and not over throttle itself, also check out my thread I made here awhile back and apply the 8th post down. It really helped keep the temp down on my phone when playing graphically intensive games like dead trigger 2,riptide gp2 etc. Also if you have trickster mod or faux clock(really recommended) you can scale down your max frequency, that should really help keep it cooler and you won't see much of a performance drop (if any) while gaming or heavily using your phone.
Sent from my SM-N900T using xda premium

d12unk13astard said:
Agree with this post, conservativex is a great governor to keep your cpu in check and not over throttle itself, also check out my thread I made here awhile back and apply the 8th post down. It really helped keep the temp down on my phone when playing graphically intensive games like dead trigger 2,riptide gp2 etc. Also if you have trickster mod or faux clock(really recommended) you can scale down your max frequency, that should really help keep it cooler and you won't see much of a performance drop (if any) while gaming or heavily using your phone.
Sent from my SM-N900T using xda premium
Click to expand...
Click to collapse
Does it works with KitKat?
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel

dramitt_live said:
Does it works with KitKat?
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel
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Click to collapse
Yes I have applied it on kk roms too, phone idles and runs much cooler after applied.
Sent from my SM-N900T using Tapatalk

d12unk13astard said:
Yes I have applied it on kk roms too, phone idles and runs much cooler after applied.
Sent from my SM-N900T using Tapatalk
Click to expand...
Click to collapse
Sounds great.. But i have a question.. Some settings are for ondemand based govs wich are unstable with kk... So would you recommend to try this with interactivex? Or wich one. TIA
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel