Develop Bugs

What is the best setting for SetCpu?

Guys! What is the best setting for Set Cpu? I need to conserve battery. My battery lasts about 12 hours. Im using a Reflex S 2.04 rom but i shifted to Leedroid 2.4.1. My settings are 768 On demand and 245 max 245 min on demand for powersave.
What is smart ass? How does it affect the system?

On SetCpu, I run overclocked 1200 till under 80%
Then about 80
700 at 70% battery
600 at 50%
I don't wish to run lower, as the desire gets a little wonky below 500mhz
3 profiles. I can get 3 days battery

I use no frills CPU - oc 1114, ondemand governor 245-1114.
Get about 12 he's heavy use, up to 2 days light. Today I have done 3+ hrs train journey with music, browsing and SMS, checked mail, now hanging about on this forum! 41% left.

All other governors are ****. Just use ondemand.
Im set at 128-1190 ondemand.
Sent from CM7

Meaple said:
All other governors are ****. Just use ondemand.
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Why?
I use smartass @128-768 Mhz.

remember to use screen off feature (saves a lot of battery)

I've been meaning to ask for a while but what's the difference between the governors, such as ondemand smartass etc...? Thanks. Dan.
Sent from my HTC Desire using XDA App

MatDrOiD said:
Why?
I use smartass @128-768 Mhz.
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Because they don't work well. When you need CPU power they tend to lag and it takes that little extra longer which does my head in. Whether it's just me I don't know but it is so annoying. I have noticed it when playing games like RoboDefence. That's why I stick to ondemand because it actually works.

for the sleep off what is the best setting? screen off 245 max 245 min on demand? or 245 max 128min smart ass?

With smartass you do not have to set a profile for screen off. Smartass uses automatically the min cpu-frequency you set. So if you set smartass for screen off, you have two "screen off"-profiles. I think that could cause problems. You should set the screen-off-profile on [email protected] to avoid waking up problems, which can occur with this min 128 and max 245 for screen off-profile.

Meaple said:
Because they don't work well. When you need CPU power they tend to lag and it takes that little extra longer which does my head in. Whether it's just me I don't know but it is so annoying. I have noticed it when playing games like RoboDefence. That's why I stick to ondemand because it actually works.
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+1 Agree totally
Ondemand is the only governor which doesnt make my phone lag.

westleydan said:
I've been meaning to ask for a while but what's the difference between the governors, such as ondemand smartass etc...? Thanks. Dan.
Sent from my HTC Desire using XDA App
Click to expand...
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You can find this in the wiki...

westleydan said:
I've been meaning to ask for a while but what's the difference between the governors, such as ondemand smartass etc...? Thanks. Dan.
Sent from my HTC Desire using XDA App
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From SetCPU-Website:
ondemand – Available in most kernels, and the default governor in most kernels. When the CPU load reaches a certain point (see “up threshold” in Advanced Settings), ondemand will rapidly scale the CPU up to meet demand, then gradually scale the CPU down when it isn't needed.
conservative – Available in some kernels. It is similar to the ondemand governor, but will scale the CPU up more gradually to better fit demand. Conservative provides a less responsive experience than ondemand, but can save battery.
performance – Available in most kernels. It will keep the CPU running at the “max” set value at all times. This is a bit more efficient than simply setting “max” and “min” to the same value and using ondemand because the system will not waste resources scanning for CPU load.
powersave – Available in some kernels. It will keep the CPU running at the “min” set value at all times.
userspace – A method for controlling the CPU speed that isn't currently used by SetCPU. For best results, do not use the userspace governor.
Click to expand...
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smartass governor – is based on the concept of the interactive governor.
I have always agreed that in theory the way interactive works – by taking over the idle loop – is very attractive. I have never managed to tweak it so it would behave decently in real life. Smartass is a complete rewrite of the code plus more. I think its a success. Performance is on par with the “old” minmax and I think smartass is a bit more responsive. Battery life is hard to quantify precisely but it does spend much more time at the lower frequencies.
Smartass will also cap the max frequency when sleeping to 352Mhz (or if your min frequency is higher than 352 – why?! – it will cap it to your min frequency). Lets take for example the 528/176 kernel, it will sleep at 352/176. No need for sleep profiles any more!
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Source: http://www.ziggy471.com/2010/11/07/smartass-governor-info/

SetCPU settings for Epic 4g

Im new to android, what is the best setting for setcpu for balancing performance and battery life. Thanks in advance
Sent from my SPH-D700 using XDA App

What Rom/kernel are you on? Voltage Control might be the better option.

The Root said:
What Rom/kernel are you on? Voltage Control might be the better option.
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On leaky gingerbread eeo3, don't know what kernel but kernel version is 2.6.35.7, firmware is 2.3.3...

The lower the maximum speed you can tolerate will give you the max battery life. A lot of people keep 800 Mhz as max for that reason.

If you want a good mix between battery and performance, I recommend keeping your maximum clock at 1000Mhz (default) and lowering your minimum clock to 100Mhz (default should be 200Mhz) if your phone will allow it.

Blankrubber said:
If you want a good mix between battery and performance, I recommend keeping your maximum clock at 1000Mhz (default) and lowering your minimum clock to 100Mhz (default should be 200Mhz) if your phone will allow it.
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Yeah, just make sure you have journaling on if you are going to try 100 Mhz. A lot of phones get the sleep of death from that. Mine is one of those. Then you will have to pull the battery and adjust your settings to 200 Mhz minimum on SetCPU.

Or....You could not use 100mhz at all!
It uses the same voltage as 200mhz. And by increasing the amount frequencies scaled makes the phone slower.
800mhz max, 200mhz min. 800mhz is volted -75 over 1ghz. Which should increase battery life.

Awsome stuff guys. Thanks for all the great info and to all that reply... Thanks again
Sent From My Epic 4G

darkierawr said:
Or....You could not use 100mhz at all!
It uses the same voltage as 200mhz. And by increasing the amount frequencies scaled makes the phone slower.
800mhz max, 200mhz min. 800mhz is volted -75 over 1ghz. Which should increase battery life.
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I'd quote him but I'm on my phone. Rodderik has stated that all the frequencies use the same internal voltage except for 100mhz, which uses a slightly less internal voltage. What we're adjusting and seeing read in voltage control is the arm voltage, or the processor voltage at each frequencies. I'm not sure the exact difference, but there is a slight drop in voltage at 100mhz compared to the other frequencies? A battery saving difference? Who knows
Sent from my SPH-D700 using XDA App

Just insalled new syndicate frozen rom. Set cpu not compatible? Installed set cpu and every time screen goes to sleep, I can't get it to wake up unless I pull out battery. Anybody else having this problem on this rom?
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otee670 said:
Just insalled new syndicate frozen rom. Set cpu not compatible? Installed set cpu and every time screen goes to sleep, I can't get it to wake up unless I pull out battery. Anybody else having this problem on this rom?
Sent from my SPH-D700 using XDA Premium App
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Everyone try conservative now, not on demand...
Edit::: The problem is with Voltage control 4b4, I'm going to test more before I report and start a thread, but feel free to...
Help support autism awareness,it only takes 2 seconds to help make a difference...
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Just changed setting to coservative and so far it seems to be working. settings is max-1300000 min-200 conservative (charging) max-1300000 min-1300000 conservative (screen off) max-400 min-400 consevative... on screen off, I tried max-200 min-200 phone stays in sleep. This what worked for me...
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Thanks to ecooce
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[Q] Setting clock speed to 800 -1200 mhz?

I know unrooted desire z devices always work at 800mhz. My device is set to 245mhz min and 1400mhz max (interactive or smartass governor). It sometimes causes my device to wake up a bit late. I wonder how long time my battery goes if I set my device at min 800 mhz and max 1200 or 1400 mhz... Did anyone try this clock speeds?

Deadly Sto(R)m said:
I know unrooted desire z devices always work at 800mhz. My device is set to 245mhz min and 1400mhz max (interactive or smartass governor). It sometimes causes my device to wake up a bit late. I wonder how long time my battery goes if I set my device at min 800 mhz and max 1200 or 1400 mhz... Did anyone try this clock speeds?
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That's way too low of a min speed, just bump it up to the next (I think it's 386) and you should see noticable improvement.
I'd also suggest the ondemand gov; since it only ramps up to the top speed when needed, then drops it back down again, you should get a bit better battery life.
Sent from my HTC Vision using XDA App

OriginalGabriel said:
That's way too low of a min speed, just bump it up to the next (I think it's 386) and you should see noticable improvement.
I'd also suggest the ondemand gov; since it only ramps up to the top speed when needed, then drops it back down again, you should get a bit better battery life.
Sent from my HTC Vision using XDA App
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i read ondemand and conservative governors are od, so using interactive or smartass are better then using others. I will try min 368 mhz but am not sure if it works...

What are you trying to accomplish by messing with the clock speed? Leave it alone at default. Performance difference is NEGLIGIBLE (bottleneck is elsewhere), and all you'll accomplish is eating the battery and burning it up with excessive heat caused by excessive clock.

dhkr234 said:
What are you trying to accomplish by messing with the clock speed? Leave it alone at default. Performance difference is NEGLIGIBLE (bottleneck is elsewhere), and all you'll accomplish is eating the battery and burning it up with excessive heat caused by excessive clock.
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Click to collapse
First of all, I would like to thank you for your comments.
People don't do anything to access root if they don't want to mess device. I am one of them and want to have a device which both has performance and visuality. You offered me to not to change clock speeds. But we know HTC Desire Z is scheduled to work at 800mhz everytime (default). My opinion is just to set minimum clock speed to 800 mhz or something like this. If my device was burn by this clock speed, it was already dead.
Today i tried this clock speed (min 614, max 1382) and during the day it didn't heat up. Moreover, 8 hours passed, i played NFS for about 1,5 hour, made some call and 30 percent of battery left. It seems this clockspeeds doesn't cause battery drain or i couldn't feel it...
EDIT: 13 hours passes, 16 percent battery left (I made minimum 30 minutes of call)

[Q] Underclocking Query

How much can the phone be underclocked while maintaining the stability of the system?
What would happen if i set Max freq to 600 Mhz?
What is the best thing to do to save up the very last bit of juice in the battery for emergency situations where i would only need the phone and message facility? Besides switching off Bt,wifi,sync.
Im asking because i was wondering if underclocking "too much" saves a substantial amount of battery when my battery is quite low and I am "hours away" from a charging port!
And is there a way to change the carrier name on the notification drop down to whatever we want.
Sorry if i sound noobish or if a similar query has been asked before
Thnx.

Underclocking the CPU dramatically isn't going to gain you a great deal in the way of extra battery life because:
1. Unless you are heavily taxing the CPU (complex 3d games etc), the biggest drains on the battery are the screen and the radio.
2. If the screen is off, the phone will drop the CPU frequency right down anyway.
The best way to get extended battery life is simply to carry spare batteries!
Regards,
Dave
Sent from my GT-N7100 using Tapatalk 2

I think 600mhz is way too low and counter productive or for that matter anything less than 1ghz. The phone will lag alot and you'll have freezes. You'll probably end up using up alot of the battery life trying to get tasks completed. You could try leaving the stock clockspeed 1.6ghz, set minimum cores to 2 and slightly undervolt to -25mv, leave the gpu setup to its default 533mhz and also undervolt to -25mv using a kernel that supports stweak app. Then run an app called Stability Test for 10minutes to check for errors.
Also I tried Go Power Master, which can be assigned to disable certain features once your battery hits critical low levels.
Sent from my GT-N7100 using xda premium

bushako said:
I think 600mhz is way too low and counter productive or for that matter anything less than 1ghz. The phone will lag alot and you'll have freezes. You'll probably end up using up alot of the battery life trying to get tasks completed. You could try leaving the stock clockspeed 1.6ghz, set minimum cores to 2 and slightly undervolt to -25mv, leave the gpu setup to its default 533mhz and also undervolt to -25mv using a kernel that supports stweak app. Then run an app called Stability Test for 10minutes to check for errors.
Also I tried Go Power Master, which can be assigned to disable certain features once your battery hits critical low levels.
Sent from my GT-N7100 using xda premium
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Thats quite informative. Thanx!

minimum cpu speed question

Have a question regarding min CPU speed vs voltage. I run task's Roman with stock kernel. My phone is not stable unless I up the voltage on the CPU clock at both the 189 and 378 speeds to 925mv.
So here's the question... since both speeds use 925mv, wouldn't it make more sense just to leave the min CPU speed at 378? Seems to me the faster min speed would process faster allowing the phone to go into deep sleep faster and saving battery.
Thoughts?

192 and 384, you mean?
Personally, I prefer my min at 192 not cos of mV difference, but cos it keeps my phone lots cooler when at min speeds.

I asked a similar question with no response. mine goes down to 81mhz and stays stable but a higher clock speed uses the same voltage so I thought just run the higher one. unless deep sleep is consistent then it shouldnt matter. but for cases like bluetooth or music streaming the higher speed might seem better. but the more heat thing must cause more battery usage I would think

s384 said:
I asked a similar question with no response.....
....more heat thing must cause more battery usage I would think
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Looks like some thread lost with time...
More heat isn't good... heat is nothing but energy dissipated... and that means energy lost... So more heat is an indicator that you are kinda pushing your CPU to work hard and harder the work, more the battery utilized.

The voltage consumption of a CPU is calculated by f*V^2. So to answer the question, even if two frequencies share the same voltage, the lower frequency will still consume less power than the higher frequency.
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