Install powertop fedora

These suggestions appear at the bottom of the screen, and specify a key for you to press to accept PowerTOP 's suggestion. As PowerTOP refreshes periodically, further suggestions appear. In Figure 2. When it runs, PowerTOP gathers statistics from the system and presents you with several important lists of information. The second piece of information is a summary of the actual wakeups per second of the machine. The number of wakeups per second gives you a good measure of how well the services or the devices and drivers of the kernel are performing with regard to power usage on your system.

The more wakeups per second you have, the more power is consumed, so lower is better here. Next, PowerTOP provides an estimate of the actual power usage of the system, if available. Expect PowerTOP to report this figure on laptops while they are in battery mode.

Any available estimates of power usage are followed by a detailed list of the components that send wakeups to the CPU most frequently. To turn off an old SYSV service permanently, run:. If the trace looks like it is repeating itself, then you probably have found a busy loop.

Fixing such bugs typically requires a code change in that component, which again goes beyond the scope of this document. Please report such issues into the Bugzilla. As seen in Figure 2.

Below these is a short summary, featuring total wakeups per second, GPU operations per second, and virtual filesystem operations per second. In the rest of the screen there is a list of processes, interrupts, devices and other resources sorted according their utilization.

If properly calibrated, a power consumption estimation for every listed item in the first column is shown as well. In the Idle stats tab, use of C-states is shown for all processors and cores. In the Frequency stats tab, use of P-states including the Turbo mode if applicable is shown for all processors and cores. This is a good indication of how well CPU usage has been optimized. The Device Stats tab provides similar information to Overview but only for devices. The Tunables tab contains suggestions for optimizing the system for lower power consumption.

Use the up and down keys to move through suggestions and the enter key to toggle the suggestion on and off. These tunings are not persistent across reboots.

To make them persistent you can use the powertop2tuned tool refer to Section 2. The utility has several screens.

To quit, hit the Esc key. The shortcuts are also listed at the bottom of the screen for your convenience. The utility shows you power usage for various hardware and drivers. But it also displays interesting numbers like how many times your system wakes up each second. Processors are so fast that they often sleep for the majority of a second of uptime.

If you want to maximize battery power, you want to minimize wakeups. You can hit Enter on any tunable to switch it to the other setting. To use it, run this command:. Caveat about this service and tunables: Certain tunables may risk your data, or on some odd hardware may cause your system to behave erratically. This means a power saving setting trades off data security. Paul W. Frields has been a Linux user and enthusiast since , and joined the Fedora Project in , shortly after launch.

He was a founding member of the Fedora Project Board, and has worked on docsc, websites, advocacy, toolchain, and package maintenance. He currently lives with his wife and two children in Virginia where he also runs a recording studio 5thdom.

Many do not. Thanks for the example! Would love to have also an easy way to switch from performance mode to save power mode. Also, are this settings active also when computer is plugged with power cable? Since service ordering may not be fully deterministic in systemd, you might get different results per boot. Note also that TLP is more complex and configurable.

For many users this is unwanted. Others prefer it. Interesting utility. I find it easier than the touchpad which I hardly ever use because I have better control over the pointer that way. The notebook was purchased new in February and has an Intel Core im processor and an HM75 chipset. Could we start listing some options we should usually change, too get better battery life, which I think is the worst thing Linux has in laptops?

It is fedora site not ubuntu … lol but maybe sudo ap-get install powertop … btw….