Hello, I would like to know, what is best setcpu speed to use maximum and minimum? My maximum currently is 768 and minimum 245. on scalling I checked: ondemand, or should i need to check something else? And I picked set on boot. Sorry for the questions.
snikeris said:
Hello, I would like to know, what is best setcpu speed to use maximum and minimum? My maximum currently is 768 and minimum 245. on scalling I checked: ondemand, or should i need to check something else? And I picked set on boot. Sorry for the questions.
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it completely depends on the rom you are using and which cpu speed ssuits your phone the best as there is no confirmation which will work the best
I'm looking at the governors in Ziggy's kernel packed with Gingeritis3D and I've got some questions I was hoping someone could help me out with.
For smartass, there are some that aren't standard. The seem sorta self-explanatory, but I was wondering what the following are exactly and what the values mean:
Up_rate_us
down_rate_us
ramp_up_step
ramp_down_step
sample_rate_jiffies
For the lagfree governor I'm curious about the following:
sampling_rate_max
sampling_rate_min
sampling_rate
sampling_down_factor
freq_step_down
My last question would be:
Why does this kernel go horribly unstable as soon as a I mess with any of the smartass values. I've screwed with these on other kernels with no problem and no matter what I do, any adjustment to the smartass gov values yields a completely unstable device.
Hello,
I'm writing this thread to know which processor options would be optimal in our minis. The best settings, which give me the best performance/battery, I've found are:
CPU Governor: SMARTASSV2 (Default)
Min Freq: 19MHz
Max Freq: 748MHz
Undervolt: TRUE
I'm also using Apex Launcher. Which settings are you using?
Note: This are just my results, be careful when you change your processor settings.
fuchini said:
Hello,
I'm writing this thread to know which processor options would be optimal in our minis. The best settings, which give me the best performance/battery, I've found are:
CPU Governor: SMARTASSV2 (Default)
Min Freq: 19MHz
Max Freq: 748MHz
Undervolt: TRUE
I'm also using Apex Launcher. Which settings are you using?
Note: This are just my results, be careful when you change your processor settings.
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Whats the purpose of Undervolting when you have it's max frequency as overclock?
zvdelossantos said:
Whats the purpose of Undervolting when you have it's max frequency as overclock?
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Because it undervolts on every frequency below 600, and his minimum is 19, so when the phone is idle or doesn't need all of the processing power he saves battery
The SmartAss governor is very good at picking the right frequencies for any given job, so it doesn't allways run on 748Mhz, not even when you're using the phone.
SmG67 said:
because it undervolts on every frequency below 600, and his minimum is 19, so when the phone is idle or doesn't need all of the processing power he saves battery
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That is the same very purpose of SMARTASSV2 to undervolt your device when idle or on sleepmode and overclocks it when on process. So ticking the undervolt wont affect your device because the one that manage the frequency will be the COUgovernor.
zvdelossantos said:
That is the same very purpose of SMARTASSV2 to undervolt your device when idle or on sleepmode and overclocks it when on process. So ticking the undervolt wont affect your device because the one that manage the frequency will be the COUgovernor.
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The SmartAss Governor only governs the frequencies, not the voltage that the Processor uses. there is a difference between the speed the cpu runs on (Mhz) and the amount of Electricity (Volts) it gets fed
Say Qualcomm has said it needs 5 volts to run at the stock frequency of 600Mhz, then the processor will always get 5 Volts, no matter which frequency it uses.
Undervolting will feed it less than the 5Volts when the frequencies are lower, SmartAss won't do that, it will run the 19Mhz still on 5Volts.
(Voltages are examples, i don't know the exact values, but I know that running on 122 or less will be stable on less than half of the nominal power)
SmG67 said:
The SmartAss Governor only governs the frequencies, not the voltage that the Processor uses. there is a difference between the speed the cpu runs on (Mhz) and the amount of Electricity (Volts) it gets fed
Say Qualcomm has said it needs 5 volts to run at the stock frequency of 600Mhz, then the processor will always get 5 Volts, no matter which frequency it uses.
Undervolting will feed it less than the 5Volts when the frequencies are lower, SmartAss won't do that, it will run the 19Mhz still on 5Volts.
(Voltages are examples, i don't know the exact values, but I know that running on 122 or less will be stable on less than half of the nominal power)
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Nice yes yes. good reply. now I know whats the use of undervolting. thanks for the explanation
SmG67 said:
The SmartAss Governor only governs the frequencies, not the voltage that the Processor uses. there is a difference between the speed the cpu runs on (Mhz) and the amount of Electricity (Volts) it gets fed
Say Qualcomm has said it needs 5 volts to run at the stock frequency of 600Mhz, then the processor will always get 5 Volts, no matter which frequency it uses.
Undervolting will feed it less than the 5Volts when the frequencies are lower, SmartAss won't do that, it will run the 19Mhz still on 5Volts.
(Voltages are examples, i don't know the exact values, but I know that running on 122 or less will be stable on less than half of the nominal power)
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nice to see some piece of truth over here (not perfect, but well explained)
de-noobing is good from time to time
xda is overcrowded of false answers given by people thinking they know but don't
anywhere, at anytime, newbies asking get fake answers from people wanting to help but failing to do so , due to lack of knowledge.
as everyone, i might be one of these, but try not to be.
make sure you know what you are talking about before spreading your (incomplete or false) knowledge
this was my thought of the day
matmutant said:
nice to see some piece of truth over here (not perfect, but well explained)
de-noobing is good from time to time
xda is overcrowded of false answers given by people thinking they know but don't
anywhere, at anytime, newbies asking get fake answers from people wanting to help but failing to do so , due to lack of knowledge.
as everyone, i might be one of these, but try not to be.
make sure you know what you are talking about before spreading your (incomplete or false) knowledge
this was my thought of the day
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Click to collapse
Would you mind to add that to FAQs to avoid false answers?
Tom.K said:
Would you mind to add that to FAQs to avoid false answers?
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of course i don't
do you mean only the explanation about oc/uv ?
i can add it, note that a while ago i wrote pieces of information about those things
Hey, thanks a lot for all the replies. I had no idea why my settings worked like i wanted.
I've read that pegasusq should be aware of multi-core CPUs and should be able to deactivate not-needed cores.
But, on SGS2 a lot of people keeps using ondemand. Even CM keeps ondemand as default scheduler.
Is ondemand still better option as maybe it is better to run one core at 200MHz using ondemand then one core at 500MHz using pegasusq... ?
tnttrx said:
I've read that pegasusq should be aware of multi-core CPUs and should be able to deactivate not-needed cores.
But, on SGS2 a lot of people keeps using ondemand. Even CM keeps ondemand as default scheduler.
Is ondemand still better option as maybe it is better to run one core at 200MHz using ondemand then one core at 500MHz using pegasusq... ?
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This could be helpful.
Please search next time as I just typed "ondemand vs pegasusq" into the search bar.
kilometers4 said:
This could be helpful.
Please search next time as I just typed "ondemand vs pegasusq" into the search bar.
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thx for pointing out, but in that thread I've just found things that I already mentioned: pegasusq is made for multi-cores and it has integrated hotplug.
unfortunately, I had no chance to find any real-world use comparison of pegasusq and ondemand (or other schedulers) regarding power consumption nor responsiveness.
tnttrx said:
thx for pointing out, but in that thread I've just found things that I already mentioned: pegasusq is made for multi-cores and it has integrated hotplug.
unfortunately, I had no chance to find any real-world use comparison of pegasusq and ondemand (or other schedulers) regarding power consumption nor responsiveness.
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pegasusq in my opinion is the better governor to use, largely because it can tell if is more than one core and respond accordingly. Pair that with CPU Sleeper Dual Core and you're golden as far as power saving awareness. SIO I hear is the best i/o scheduler to use for power consumption, deadline in my opinion is the best for pure performance however be careful because If you do overload and a process misses a deadline it will hiccup or even freeze.
Hey
After I rooted (and reflashed) my Z5C, I noticed that the battery was draining very quickly. Then I found out that it had been running on max frequency w/ the performance governor. So I wanted to ask if anyone knows the default/stock frequency, governor and scheduler? And for some reason it sets itself to performance and on the highest frequency so I have to set it manually apparently...
Kernel auditor can possibly help