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- Antares Auto-tune
- Powertop Auto Tune System Parts
- Powertop Auto Tune
- Powertop Auto Tune System Diagram
- Powertop Auto Tune System Requirements
Fks@thinkmad $ sudo powertop -auto-tune modprobe cpufreqstats failedLoaded 220 prior measurements RAPL device for cpu 0 RAPL Using PowerCap Sysfs: Domain Mask f.
PowerTOP is a Linux utility that can monitor and display a system's electrical power usage. It is useful as a hardware monitoring and diagnostic tool. It is among the most powerful battery stretching utilities for notebook computers.
Antares Auto-tune
- 1Installation
- 2Configuration
- 3Usage
- 4Troubleshooting
Installation
Kernel
Several kernel options must be enabled in the kernel for PowerTOP to work properly. These include: CONFIG_DEBUG_FS, CONFIG_TRACING, CONFIG_BLK_DEV_IO_TRACE, CONFIG_TIMER_STATS (was removed in kernel 4.11), CONFIG_CPU_FREQ_STAT, and CONFIG_CPU_FREQ_STAT_DETAILS (removed in 4.11, and rolled into CONFIG_CPU_FREQ_STAT).
CONFIG_TIMER_STATS has been removed from kernel, see https://patchwork.kernel.org/patch/9561519/
For newer Intel Core series of processors (based on the Sandy Bridge microarchitecture or newer) enable the powercap sysfs driver via CONFIG_POWERCAP and CONFIG_INTEL_RAPL.
Optionally, for wireless power saving enable: CONFIG_TRACEPOINTS.
https://perfmeluga.tistory.com/9. Free samples for ableton. If the above options have not properly been enabled Portage will display warning messages at the end of the emerge. Teaches cooking ii restaurant recipes at home free download windows 10. If help is required for upgrading the kernel while enabling the above options, be sure to see the kernel upgrade article!
USE flags
USE flags forsys-power/powertoptool to diagnose issues with power consumption and power management
X | Add support for X11 |
nls | Add Native Language Support (using gettext - GNU locale utilities) |
unicode | Add support for Unicode |
Emerge
After setting USE flags, emerge PowerTOP:
Configuration
PowerTOP does not have any configuration other than passing options via the command-line.
Calibration
Calibration can be performed in order for PowerTOP to gain an understanding of the system:
Usage
Invocation
Troubleshooting
Powertop Auto Tune System Parts
Could not find a Makefile in the kernel source directory
After an emerge a message similar to the following message may be displayed:
This warning indicates the PowerTOP ebuild has attempted to verify a successful operating environment for the PowerTOP software package. In order to be sure PowerTOP will work as intended, at the end of the emerge process, a check is ran against the current kernel source configuration. In the case of the above message two warnings were provided:
Powertop Auto Tune
- No kernel sources have been detected. This can happen as a result of running an emerge --depclean or failed to have a specific kernel set using the eselect kernel command.
- Since no kernel sources have been detected Portage was not able to scan the kernel's .config file to determine if the correct features have been enabled in the kernel. According to the error message above, five features are not set. The features may or may not be set in the current running kernel. Portage is simply making the user aware there is no way to verify these features have been set without a .config file. If PowerTOP can perform some functions but not others, be sure all the kernel features listed have been enabled. For more information on how to do so consult the kernel configuration article.
See also
- Power management — describes methods to save energy for longer battery runtimes, a quieter computer, lower power bills, and an environmentally friendly impact.
External resources
- https://www.linux.com/learn/powertop-finds-power-hogs-your-linux-pc - A Linux.com article on using PowerTOP to measure large power consumers.
- https://01.org/sites/default/files/page/powertop_users_guide_201406.pdf - A PowerTOP user guide writen by two Intel employees (PDF).
Powertop is a tool provided by Intel to enable various powersaving modes in userspace, kernel and hardware. It is possible to monitor processes and show which of them are utilizing the CPU and wake it from its Idle-States, allowing to identify applications with particular high power demands.
Powertop Auto Tune System Diagram
- 2Usage
- 3Troubleshooting
Installation
Install the powertop package.
Usage
Powertop suggests a few methods to reduce the power consumption further. However, in interactive mode, powertop does not display the parameters. To find out which ones are suggested, proceed as follows:
- If you have changed parameters (e.g. in powertop), reboot so that the system has default state of the parameters.
- Use powertop to produce a report on parameters:
# powertop --html=powerreport.html - Open the report in your favorite web browser. The 'Tuning' tab of the report now shows the actual parameters suggested by the tool to apply to save power. You may extract the commands with
awk -F '</?td ?>' '/tune/ { print $4 }' powerreport.html.
Apply settings
There are two ways to automatically apply the suggested settings:
- Recommended: You can apply these settings at boot by using module parameters, udev rules and sysctl. For details, see the power management page.
- You can use the
--auto-tunefeature from powertop which sets all tunable options to their GOOD setting. This can be combined with systemd service to have the tunables set on boot. Remember to enable/start the service.
Troubleshooting
Error: Cannot load from file
If you receive an error like the following when starting powertop, it's likely that powertop has not collected enough measurement data yet. To fix this, keep powertop running for a certain time connected to battery power only.
Powertop Auto Tune System Requirements
Calibration to prevent inaccurate measurement
If you experience inaccurate measurement, then it is likely that you need to calibrate powertop first. This can be done by running powertop with the --calibrate parameter.
See also