Originally posted by molecule-eye
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Is Intel's PowerTOP Utility Still Beneficial In 2016 On Ubuntu 16.04 To Save Power?
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@ext73
If you want that I look at a website then it needs to be in English or German language. Btw. the default settings of a kernel need to run on most systems, this is certainly not optimal for power saving. But if the system crashes or has choppy USB input then you most likely wont use it.
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Originally posted by molecule-eye View PostYou have to test battery run time, not wattage usage. You can really lower the watts used on your computer by simply restricting the cores from running at their highest frequency. But you'll also spend more time executing code that way, so you won't necessarily get better battery lfie, depending on the task.
One of the tests was the critical power consumption at idle, so that's moot; in second it looks like the tests complete in the same time from power consumption line. Avoiding unwanted wake-ups ought improve a benchmark performance, because the CPU is focussed on doing the work, rather than servicing distractions.
The battery life, adds variables and takes too long to practically test, but it makes sense if power top, helps reduce the amount of work done that battery life will be longer so reducing Watts is a useful measurement.
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Originally posted by Kano View Post@ext73
This is always board specific. One of my test boxes has got problems when i enable ASPM in the firmware. You can not say do this or that in general. Powertop can help you to configure whats working of course, but it is impossible to get a generic solution with lots of items enabled by default. For laptops you certainly want to maximize the battery life, but don't forget to disable a 2nd gfx chip while doing so...
https://dl.dropboxusercontent.com/u/...ny/optimus.pngLast edited by ext73; 15 March 2016, 04:21 PM.
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You have to test battery run time, not wattage usage. You can really lower the watts used on your computer by simply restricting the cores from running at their highest frequency. But you'll also spend more time executing code that way, so you won't necessarily get better battery lfie, depending on the task.
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@ext73
This is always board specific. One of my test boxes has got problems when i enable ASPM in the firmware. You can not say do this or that in general. Powertop can help you to configure whats working of course, but it is impossible to get a generic solution with lots of items enabled by default. For laptops you certainly want to maximize the battery life, but don't forget to disable a 2nd gfx chip while doing so...
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Originally posted by uid313 View PostYou get better battery, but maybe you get lower performance.
So you probably want to do this on your laptop, but not on your desktop.
I wonder if the Dell Sputnik "Developer Edition" laptop preloaded with Ubuntu is configured this way.
And yes, I had to put in an exception for my keyboard to keep it usable, and I also ended up cranking the dirty write back value beyond the powertop recommendation as well (60s instead of 15).
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Originally posted by uid313 View PostYou get better battery, but maybe you get lower performance.
So you probably want to do this on your laptop, but not on your desktop.
I wonder if the Dell Sputnik "Developer Edition" laptop preloaded with Ubuntu is configured this way.
but here you do not have to go to a special compromise = you have separate modes [and it is usually a few] for AC and battery Here is an example of work the mechanism [my authorship] APM 5.1 - power and performance management for Ubuntu/Kubuntu/... - on the following configuration:
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You get better battery, but maybe you get lower performance.
So you probably want to do this on your laptop, but not on your desktop.
I wonder if the Dell Sputnik "Developer Edition" laptop preloaded with Ubuntu is configured this way.
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Originally posted by Kano View PostI don't think powertop should be run by default while you install Linux. It can introduce lots of problems too if USB is in powersave mode and other things. If somebody likes it can be still used after install - then the user has at least full control and (should) know how to adjust the settings.
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