which of the recent governors gives best performance?
lazy, interactive, smartassv2?
Thanks guys
I just use Ondemand. I've tried others but I always end going back to it.
I've heard interactive is good for performance. I was under the impression that lazy and smartass were more geared towards battery saving.
Sent from my Nexus S using xda premium
I use lazy or ondemand typically.
Follow the leader @corythug
for performance, ondemand with a sampling rate of 15000 and up threshold of 98.
simms22 said:
for performance, ondemand with a sampling rate of 15000 and up threshold of 98.
Click to expand...
Click to collapse
simms, I am assuming this will drain battery faster as the default sampling rate is 40000. Am I correct?
Sampling Rate – An interval (in microseconds) at which the governor will poll for updates. When this happens, the governor will decide whether to scale the CPU up or down.
Up Threshold – Defines a percentage from 1% to 100%. When the CPU load reaches this point, the governor will scale the CPU up.
i like smartassV2 1200 / 100
Naa Laa said:
simms, I am assuming this will drain battery faster as the default sampling rate is 40000. Am I correct?
Sampling Rate – An interval (in microseconds) at which the governor will poll for updates. When this happens, the governor will decide whether to scale the CPU up or down.
Up Threshold – Defines a percentage from 1% to 100%. When the CPU load reaches this point, the governor will scale the CPU up.
Click to expand...
Click to collapse
no. itll actually be a little better on battery, a little more efficient than the default. and itll give the ui a little speed boost.
Isn't interactive supposed to be a 'better OnDemand'
I'm thinking it's the opposite, that on demand was an improved interactive, but I could be wrong. I really don't notice much difference between any of them. On lazy and smartassv2 I seem to get more random problems. Really though, what's best questions are left for you to explore and find out. Some people on these threads use their phone for most their computing needs and some barely even use their phone.
Sent from my Nexus S 4G
i use smartass 1200/200 on matrix 10.0 kernal n havent had any issues..i get awesome battery life 18+ hours with light to moderate use
Sent from my Nexus S 4G using XDA Premium App
I'm voting for interactive, I've had great battery life and performance from it fwiw
Sent from my Nexus S 4G using Tapatalk
What's actually the difference? Is there any guide to read?
gellow said:
What's actually the difference? Is there any guide to read?
Click to expand...
Click to collapse
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.
interactive – Available in newer kernels, and becoming the default scaling option in some official Android kernels. The interactive governor is functionally similar to the ondemand governor with an even greater focus on responsiveness.
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.
smartass – Included in some custom kernels. The smartass governor effectively gives the phone an automatic Screen Off profile, keeping speeds at a minimum when the phone is idle.
SOURCE: http://setcpu.com/#7
I've tried different configurations but always end up going for ondemand.
There is no "best governor", just like there's no best brand of beer. My favorite, however, is smartassv2. Great performance and battery life - probably one of the better compromises.
But I don't drink beer!
Sent from my Nexus S using XDA App
okay im sorry if this is one of the most noobish questions, but what exactly are governors , and how do they help ?
Sent from my Mytouch 4G Running Capychimps Sense 3.5 rom (v.4.0)
Cpu governors "govern" how the cpu works. There is a list somewhere that explains what a few of them do. Basically they dictate how your cpu behaves and therefore the performance you see and power consumption you experience. I'll see if I can find that list.
Edit:
- The ondemand governor is the default option used by Android. It scales the CPU speed between the minimum and maximum speeds depending on CPU load. If the system needs more speed, the kernel will rapidly scale up the CPU speed. - The conservative sets the CPU speed in a similar way to the ondemand governor, but scales the CPU up much less rapidly. This would theoretically save battery power, but may lead to less responsiveness. - The userspace governor is currently useless. It's another way for applications to set the CPU speed that SetCPU does not use. - The powersave governor always keeps the CPU at the minimum set frequency. - The performance governor always keeps the CPU at the maximum set frequency.
Except for "userspace," no matter which governor you set, the CPU will always stay within the bounds of the maximum and minimum speeds you set in SetCPU.
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!
Sent from my HTC Glacier using XDA App
estallings15 said:
Cpu governors "govern" how the cpu works. There is a list somewhere that explains what a few of them do. Basically they dictate how your cpu behaves and therefore the performance you see and power consumption you experience. I'll see if I can find that list.
Edit:
- The ondemand governor is the default option used by Android. It scales the CPU speed between the minimum and maximum speeds depending on CPU load. If the system needs more speed, the kernel will rapidly scale up the CPU speed. - The conservative sets the CPU speed in a similar way to the ondemand governor, but scales the CPU up much less rapidly. This would theoretically save battery power, but may lead to less responsiveness. - The userspace governor is currently useless. It's another way for applications to set the CPU speed that SetCPU does not use. - The powersave governor always keeps the CPU at the minimum set frequency. - The performance governor always keeps the CPU at the maximum set frequency.
Except for "userspace," no matter which governor you set, the CPU will always stay within the bounds of the maximum and minimum speeds you set in SetCPU.
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!
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
wow ! , thanks i guess im gonna get rid of my sleeping profile and start using smartass, thanks for the help
Sent from my Mytouch 4G Running Capychimps Sense 3.5 rom (v.4.0)
do you happen to know any info about smartassv2 ? , i just checked my list and i have both smartass and smartassv2
Sent from my Mytouch 4G Running Capychimps Sense 3.5 rom (v.4.0)
You're welcome! By the way, I'd appreciate it if you'd hit the Thanks button. I help people all the time and am rarely thanked. I'm starting to get a complex. Ha.
Sent from my HTC Glacier using XDA App
jjbat87 said:
do you happen to know any info about smartassv2 ? , i just checked my list and i have both smartass and smartassv2
Sent from my Mytouch 4G Running Capychimps Sense 3.5 rom (v.4.0)
Click to expand...
Click to collapse
Smart ass v2 is just an update of smart ass v1
Sent from my HTC Glacier using XDA App
1) Ondemand
2) Ondemandx
3) Conservative
4) Interactive
5) Interactivex
6) Lulzactive
7) Smartass
8) SmartassV2
9) Intellidemand
10) Lazy
11) Lagfree
12) Lionheart
13) LionheartX
14) Brazilianwax
15) SavagedZen
16) Userspacce
17) Powersave
18) Performance
1) Ondemand:
Default governor in almost all stock kernels. One main goal of the ondemand governor is to switch to max frequency as soon as there is a CPU activity detected to ensure the responsiveness of the system. (You can change this behavior using smooth scaling parameters, refer Siyah tweaks at the end of 3rd post.) Effectively, it uses the CPU busy time as the answer to "how critical is performance right now" question. So Ondemand jumps to maximum frequency when CPU is busy and decreases the frequency gradually when CPU is less loaded/apporaching idle. Even though many of us consider this a reliable governor, it falls short on battery saving and performance on default settings. One potential reason for ondemand governor being not very power efficient is that the governor decide the next target frequency by instant requirement during sampling interval. The instant requirement can response quickly to workload change, but it does not usually reflect workload real CPU usage requirement in a small longer time and it possibly causes frequently change between highest and lowest frequency.
2) Ondemandx:
Basically an ondemand with suspend/wake profiles. This governor is supposed to be a battery friendly ondemand. When screen is off, max frequency is capped at 500 mhz. Even though ondemand is the default governor in many kernel and is considered safe/stable, the support for ondemand/ondemandX depends on CPU capability to do fast frequency switching which are very low latency frequency transitions. I have read somewhere that the performance of ondemand/ondemandx were significantly varying for different i/o schedulers. This is not true for most of the other governors. I personally feel ondemand/ondemandx goes best with SIO I/O scheduler.
3) Conservative:
A slower ondemand which scales up slowly to save battery. The conservative governor is based on the ondemand governor. It functions like the ondemand governor by dynamically adjusting frequencies based on processor utilization. However, the conservative governor increases and decreases CPU speed more gradually. Simply put, this governor increases the frequency step by step on CPU load and jumps to lowest frequency on CPU idle. Conservative governor aims to dynamically adjust the CPU frequency to current utilization, without jumping to max frequency. The sampling_down_factor value acts as a negative multiplier of sampling_rate to reduce the frequency that the scheduler samples the CPU utilization. For example, if sampling_rate equal to 20,000 and sampling_down_factor is 2, the governor samples the CPU utilization every 40,000 microseconds.
4) Interactive:
Can be considered a faster ondemand. So more snappier, less battery. interactive is designed for latency-sensitive, interactive workloads. Instead of sampling at every interval like ondemand, it determines how to scale up when CPU comes out of idle. The governor has the following advantages: 1) More consistent ramping, because existing governors do their cpu load sampling in a workqueue context, but interactive governor does this in a timer context, which gives more consistent CPU load sampling. 2) Higher priority for CPU frequency increase, thus giving the remaining tasks the CPU performance benefit, unlike existing governors which schedule ramp-up work to occur after your performance starved tasks have completed. Interactive It's an intelligent Ondemand because of stability optimizations. Why??
Sampling the CPU load every X ms (like ondemand) can lead to under-powering the CPU for X ms, leading to dropped frames, stuttering UI, etc. Instead of sampling the CPU at a specified rate, the interactive governor will check whether to scale the CPU frequency up soon after coming out of idle. When the CPU comes out of idle, a timer is configured to fire within 1-2 ticks. If the CPU is very busy between exiting idle and when the timer fires, then we assume the CPU is underpowered and ramp to max frequency.
5) Interactivex:
This is an Interactive governor with a wake profile. More battery friendly than interactive.
6) Lulzactive:
This new find from Tegrak is based on Interactive & Smartass governors and is one of the favorites.
Old Version: When workload is greater than or equal to 60%, the governor scales up CPU to next higher step. When workload is less than 60%, governor scales down CPU to next lower step. When screen is off, frequency is locked to global scaling minimum frequency.
New Version: Three more user configurable parameters: inc_cpu_load, pump_up_step, pump_down_step. Unlike older version, this one gives more control for the user. We can set the threshold at which governor decides to scale up/down. We can also set number of frequency steps to be skipped while polling up and down.
When workload greater than or equal to inc_cpu_load, governor scales CPU pump_up_step steps up. When workload is less than inc_cpu_load, governor scales CPU down pump_down_step steps down.
Example:
Consider
inc_cpu_load=70
pump_up_step=2
pump_down_step=1
If current frequency=200, Every up_sampling_time Us if cpu load >= 70%, cpu is scaled up 2 steps - to 800.
If current frequency =1200, Every down_sampling_time Us if cpu load < 70%, cpu is scaled down 1 step - to 1000.
7) Smartass:
Result of Erasmux rewriting the complete code of interactive governor. Main goal is to optimize battery life without comprising performance. Still, not as battery friendly as smartassV2 since screen-on minimum frequency is greater than frequencies used during screen-off. Smartass would jump up to highest frequency too often as well.
8) SmartassV2:
Version 2 of the original smartass governor from Erasmux. Another favorite for many a people. The governor aim for an "ideal frequency", and ramp up more aggressively towards this freq and less aggressive after. It uses different ideal frequencies for screen on and screen off, namely awake_ideal_freq and sleep_ideal_freq. This governor scales down CPU very fast (to hit sleep_ideal_freq soon) while screen is off and scales up rapidly to awake_ideal_freq (500 mhz for GS2 by default) when screen is on. There's no upper limit for frequency while screen is off (unlike Smartass). So the entire frequency range is available for the governor to use during screen-on and screen-off state. The motto of this governor is a balance between performance and battery.
9) Intellidemand:
Intellidemand aka Intelligent Ondemand from Faux is yet another governor that's based on ondemand. Unlike what some users believe, this governor is not the replacement for OC Daemon (Having different governors for sleep and awake). The original intellidemand behaves differently according to GPU usage. When GPU is really busy (gaming, maps, benchmarking, etc) intellidemand behaves like ondemand. When GPU is 'idling' (or moderately busy), intellidemand limits max frequency to a step depending on frequencies available in your device/kernel for saving battery. This is called browsing mode. We can see some 'traces' of interactive governor here. Frequency scale-up decision is made based on idling time of CPU. Lower idling time (<20%) causes CPU to scale-up from current frequency. Frequency scale-down happens at steps=5% of max frequency. (This parameter is tunable only in conservative, among the popular governors )
To sum up, this is an intelligent ondemand that enters browsing mode to limit max frequency when GPU is idling, and (exits browsing mode) behaves like ondemand when GPU is busy; to deliver performance for gaming and such. Intellidemand does not jump to highest frequency when screen is off.
10) Lazy:
This governor from Ezekeel is basically an ondemand with an additional parameter min_time_state to specify the minimum time CPU stays on a frequency before scaling up/down. The Idea here is to eliminate any instabilities caused by fast frequency switching by ondemand. Lazy governor polls more often than ondemand, but changes frequency only after completing min_time_state on a step overriding sampling interval. Lazy also has a screenoff_maxfreq parameter which when enabled will cause the governor to always select the maximum frequency while the screen is off.
11) Lagfree:
Lagfree is similar to ondemand. Main difference is it's optimization to become more battery friendly. Frequency is gracefully decreased and increased, unlike ondemand which jumps to 100% too often. Lagfree does not skip any frequency step while scaling up or down. Remember that if there's a requirement for sudden burst of power, lagfree can not satisfy that since it has to raise cpu through each higher frequency step from current. Some users report that video playback using lagfree stutters a little.
12) Lionheart:
Lionheart is a conservative-based governor which is based on samsung's update3 source. Tweaks comes from 1) Knzo 2) Morfic (MY FAVORITE DEV) The original idea comes from Netarchy. See here. The tunables (such as the thresholds and sampling rate) were changed so the governor behaves more like the performance one, at the cost of battery as the scaling is very aggressive.
To 'experience' Lionheart using conservative, try these tweaks:
sampling_rate:10000 or 20000 or 50000, whichever you feel is safer. (transition latency of the CPU is something below 10ms/10,000uS hence using 10,000 might not be safe).
up_threshold:60
down_threshold:30
freq_step:5
Lionheart goes well with deadline i/o scheduler. When it comes to smoothness (not considering battery drain), a tuned conservative delivers more as compared to a tuned ondemand.
13) LionheartX
LionheartX is based on Lionheart but has a few changes on the tunables and features a suspend profile based on Smartass governor.
14) Brazilianwax:
Similar to smartassV2. More aggressive ramping, so more performance, less battery.
15) SavagedZen:
Another smartassV2 based governor. Achieves good balance between performance & battery as compared to brazilianwax.
16) Userspace:
Instead of automatically determining frequencies, lets user set frequencies.
17) Powersave:
Locks max frequency to min frequency. Can not be used as a screen-on or even screen-off (if scaling min frequency is too low).
18) Performance:
Sets min frequency as max frequency. Use this while benchmarking!
So, Governors can be categorized into 3/4 on a high level:
1.a) Ondemand Based:
Works on "ramp-up on high load" principle. CPU busy-time is taken into consideration for scaling decisions. Members: Ondemand, OndemandX, Intellidemand, Lazy, Lagfree.
1.b) Conservative Based:
Members: Conservative, Lionheart, LionheartX
2) Interactive Based:
Works on "make scaling decision when CPU comes out of idle-loop" principle. Members: Interactive, InteractiveX, Lulzactive, Smartass, SmartassV2, Brazilianwax, SavagedZen.
3) Weird Category:
Members: Userspace, Powersave, Performance.
Regards
Avetis
Correction:Brazilianwax also falls in weird category.
Nice info in one place!
And what about wheatley, abyssplug and hotplug governors?
ThANK you for this! I've always wanted to know this information
From the giant: Galaxy Note
Cool...that makes Android even more sophisticated
Can I get & use governors?
I know I am going to sound like a noob, but I keep hearing about these, and I am interested in what they can do for me. What I cannot figure out is what they are (I see what they do) and where to get them.
My phone is rooted, but stock ROM. Can I get & use governors?
jeromepearce said:
I know I am going to sound like a noob, but I keep hearing about these, and I am interested in what they can do for me. What I cannot figure out is what they are (I see what they do) and where to get them.
My phone is rooted, but stock ROM. Can I get & use governors?
Click to expand...
Click to collapse
download "No-frills CPU control" from the market
This may explain a bit more detail => http://forum.xda-developers.com/showthread.php?t=1369817
jeromepearce said:
I know I am going to sound like a noob, but I keep hearing about these, and I am interested in what they can do for me. What I cannot figure out is what they are (I see what they do) and where to get them.
My phone is rooted, but stock ROM. Can I get & use governors?
Click to expand...
Click to collapse
A lot of people recommend using SmartAssV2 and SavagedZen, between both I've never really seen the performance differences or benefits based on my own usage. I did actually see a performance drop in the UI if I change my CPU mode from dualcore to hot plug if I use any of the custom governors.
With the performance level on the Galaxy Note, I dont think its necessary to change anything even the battery savings on this might be miniscule at best.
nbass668 said:
download "No-frills CPU control" from the market
Click to expand...
Click to collapse
Thanks for that. I can't see any better governors than SetCPU, however, although they may be applied better (SetCPU seems to stop my phone sleeping, kind of a Red-Bull effect?)
---------- Post added at 12:20 PM ---------- Previous post was at 12:17 PM ----------
aatjitra said:
This may explain a bit more detail => http://forum.xda-developers.com/showthread.php?t=1369817
Click to expand...
Click to collapse
OK, so it appears I need to flash a custom kernel then? One day I'll feel confident enough to understand the difference between a kernel and a ROM, and feel confident enough to apply either. I guess I have more to read....
Yup, flash a custom kernel. Use CWM or Mobile Odin.
Sent from my GT-N7000 using xda premium
jeromepearce said:
Thanks for that. I can't see any better governors than SetCPU, however, although they may be applied better (SetCPU seems to stop my phone sleeping, kind of a Red-Bull effect?)
---------- Post added at 12:20 PM ---------- Previous post was at 12:17 PM ----------
OK, so it appears I need to flash a custom kernel then? One day I'll feel confident enough to understand the difference between a kernel and a ROM, and feel confident enough to apply either. I guess I have more to read....
Click to expand...
Click to collapse
It depends on what rom/kernel/governor you are using.
Sent from my GT-N7000 using xda premium
What about Abyssplug and Weathley governers ?
Sent from my SGH-T989 using XDA
Avetny,
Could you please also elaborate on the I/O Schedular: Noop, deadline, cfq/bfq, vr and sio. If you have time off course
Thanks in advance
Isn't this the same content as this thread?
http://forum.xda-developers.com/showthread.php?t=1369817
Sent from my GT-N7000 using xda premium
This should be stickied
Sent from my GT-N7000 using Tapatalk
GOVERNORS info
:good: Thanks a lot. This is exactly what I am looking for.
hi guys.
i'm just wondering if you have any good/best configuration for savies kernel?
and how can i make deep sleep activate with savies kernel?
im noob guys.
use
FOr battery saving
min:312 Mhz
max:624 Mhz
gov:consevative
i/o:deadline
for gaming+battery draining
max:832
min:624
gov:lagfree
i/o:cfq
datz it....
Governers main function is to change frequencies, so you should keep the min-max as 312-824, and let the governer do the rest (battery saving governers tend to keep freq as low as possible and performance governers the other way). In that way, you can get maximum efficiency without losing performance..
For complete/only battery saving:
governer: powersave
i/o: deadline
For battery saving with moderate performance:
governer: ondemand
i/o: deadline
For good performance with moderate battery savings :
governer : smartass v2
i/o: sio/deadline (sio for more perfomance)
For pure performance or extreme gaming:
governer: performance
i/o: sio
Ref : http://forum.xda-developers.com/showthread.php?t=1507204
For deep sleep, you dont need to activate anything, it activates itself when the screen goes off, its the setting where cpu is at lowest freq state and minimal load
Personally, I am really enjoying zzmoove ("relax" profile) on Boeffla kernel. I can't really seem to find another governor that can give me good battery life with such a minimal impact on speed.
Got anything better? Bonus points for your favorite I/O scheduler/readahead buffer settings!
Currently I'm liking IntelliMM (sometimes not so fluent) and SmartMax + SmartMax EPS (tiny bit less fluent)
Best would be to get CPU Spy (2.0), use each governor for 2 days and see which one spends the most time on low frequencies. Also, I noticed schedulers also impact performance, so try tripndroid / zen / fiops also.
Zzmove Battery plus profile, Smartmax , InteliMM and Franco's Conservative(not standard conservative)
except for zzmove i tune myself just a lil all the other governors.
i m aiming for decent battery life( between 5 and 6 hours SOT) with good performance.( i dont underclock my cpu lower than 1953 and my gpu lower than 462)
for Gpu governor i love Simple_ondemand . and for schedulers i prefer FIOPS