How does interactive governor work

Awesome mate. Well put and now I have a better understanding of how all of these governors actually work. Thanks man! I find Chill on clusters on big. Awesome performance and screen off time is minimal.

Nice article. Nice Blog Very goood information i got from your blog. Thank you and Share some more android stuff here. Ow, how does mpdecision is the best for performance and battery life? I don't think that list is right. It can be a little too aggressive with switching on cores. I think you are right to think that technically it isn't the best in both cases, so I might have to do further research!

Very informative, thanks for the hard work. Now I can really explore kernel auditor. One question as a noob,can i set hotplug driver to mpdecision? Or is it actually default? Mine Isn't qualocom device Or between intelliplug and thunderplug which one is better? Finally,between elementalx and interactive which is better? Tanks for comparison :. Post a Comment Please respect the admin of the website and don't post spam!

Spam will be removed through moderation so you will be wasting time if you do so! Post something meaningful that will help the developer or others : If spam becomes a problem, I will remove the ability to create comments once again. There are many CPU governors available on android, but there are some important things people should look out for before selecting their new governor:. Speed - Some governors are faster than others and some are slower. This all depends on if the governor is biased towards performance or towards battery life.

Balanced governors tend to be on the middle-ground providing optimal speed when required. Battery life - Generally, if the governor is biased towards performance, it will drain your battery faster. If the governor is biased towards battery life, the battery should drain slower. If the governor is balanced, then it will try to provide optimal performance while trying to be battery friendly when possible. This also depends on usage patterns and other factors such as background applications or wakelocks when your CPU is on even though your screen is off.

Stability - The stability of a governor is dependent on a number of factors like how well the developer has implemented the governor and can vary between different devices.

One governor may work well for a specific platform but may not work well on others. It is also important to look out if the governor is a Work-In-Progress WIP where bugs may be encountered during usage. Smoothness - Not to be confused with speed, a governor can be fast but it doesn't also mean it is smooth. Some governors implement features such as touch boost to help improve the "responsiveness" when touch events are registered.

Others may choose to ramp down the frequency over a timer to attempt to provide CPU power for successive events. Therefore, it has a balance between battery savings and performance. This means slightly more battery drainage than the original PegasusQ but it is still a balanced governor. ZZmanx ZZmanx is exactly the same as ZZmove, but it has been renamed because DorimanX made it into his own version possibly better performance.

However, it still suffers from below average gaming performance. Refer to ZZmoove description for guide on profiles.

Dynamic Interactive DynInteractive This governor dynamically adjusts itself according to load. That means it's settings are dynamic always changing and not static not changing. Dyninteractive still obtains the same great balance between battery life and performance found in the original interactive governor and improves it even further.

This is not the same as the original interactive governor because of this unique behavior. Ktoonservative is based on the Conservative governor, but with the addition of new tunable variables and hotplugging.

It aims to be very responsive while also being good at saving battery. This governor is highly configurable and is found in ktoonsez's kernels. Performance may cry PMC A governor based on Smartmax except it's heavily tweaked for better and maximum battery life. This is not a gaming governor! Dance Dance Based on conservative with some smartass features, it scales accordingly to conservatives laws. So it will start from the bottom, take a load sample, if it's above the upthreshold, ramp up only one speed at a time, and ramp down one at a time.

It will automatically cap the off screen speeds to Mhz, and if your min freq is higher than mhz, it will reset the min to mhz while screen is off and restore it upon screen awakening, and still scale accordingly to conservatives laws. So it spends most of its time at lower frequencies. The goal of this is to get the best battery life with decent performance. It is a performance focused governor but also blends with some battery savings.

It also fixes the problem where the governor is set only for the first core, but now governs all cores right from whatever utility you use. There have been comments on the lack of stability with this governor. It is designed to work within those fixed voltage ranges in order to maximize battery performance while creating a smooth UI operations.

It is battery friendly and spends most of the time at lower frequencies. Interactive Pro A newer modified version of interactive which is optimized for devices such as the One Plus One. It is a more efficient than the original Interactive because it continuously re-evaluates the load of each CPU therefore allowing the CPU to scale efficiently.

Slim A new governor from the cm branch and the slimrom project. This is a performance optimized governor and has been tuned a lot for newer devices such as the One Plus One. Ondemand EPS. A modified version of Ondemand and is optimized for newer devices.

It is based on the Semaphore Kernel's Ondemand which is more optimized for battery life. The EPS at the end stands for Extreme power savings so this governor is biased to power savings! This means it uses less battery than the original Smartmax so it is not a very good gaming governor again! This is only found on newer devices. Uberdemand is Ondemand with 2-phase feature meaning it has a soft cap at MHz so your cpu won't always go directly to max, made by Chet Kener.

Default is Load for frequency increase is still evaluated every sampling rate. If unsure have a look at the help section of the driver. Fallback governor will be the performance governor. So the results show that Wheatley works as intended and ensures that the C4 state is used whenever the task allows a proper efficient usage of the C4 state. For more demanding tasks which cause a large number of wakeups and prevent the efficient usage of the C4 state, the governor resorts to the next best power saving mechanism and scales down the frequency.

So with the new highly-flexible Wheatley governor one can have the best of both worlds. Obviously, this governor is only available on multi-core devices. When screen is off, frequency is locked to global scaling minimum frequency. Unlike older version, this one gives more control for the user. We can also set number of frequency steps to be skipped while polling up and down. Ongoing processes in the queue, we know that multiple processes can run simultaneously on.

To ensure that each process has its fair share of resources, each running for a certain period and will eventually stop and then again placed in the queue until it is your turn again. If a program is terminated, so that others can run the program with the highest priority in the current queue is executed. A Krait CPU can smoothly scale from low power, lowleakage mode to blazingly fast performance. Believe it's a governor that is mfg'd by qualcomm to utilize new on chip features.

Checks for offline cpus and short circuits some unnecessary checks to improve code execution paths AdaptiveThis driver adds a dynamic cpufreq policy governordesigned for latency-sensitive workloads and also for demandingperformance. This governor attempts to reduce the latency of clockincreases so that the system is more responsive tointeractive workloads in loweset steady-state but toto reduce power consumption in middle operation level level upwill be done in step by step to prohibit system from going tomax operation level.

A good compromise between performance and battery. In addition to the SoD is a prevention because it usually does not hotplug. It has three settings: battery saver, balanced and performance. In addition to a performance boost, there is also the governor zzmove optimized. With this guide I hope to have done something pleasant, good read.

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Thanks for your info ;. Awesome info! Thanks for the info.. Good one. If the load is below this value then the CPU scale to some lower freq below the hi speed freq set. For example: 90 Reaching this load hi speed freq is hit. Below this load lower intermediate freq below hi speed freq defined. For example: It means MHz. For example: 90 it means load target is Within this if the load reaches 40 then MHz is used and hold down timer is run to decide whether to ramp further up or down.

For example: This means governor will began doing cpu load calculations every 30ms. In such case, the governor will run to max CPU freq to take off the load. But then the power dissipation be more due running at max freq. So to over this a threshold is defined in timer slack, which makes load follow interactive governor.

How do I apply these settings for Yureka..? Read through the commands. I assume you would have basic knowledge about Unix commands. Remove the file extension init.