PowerTOP：在Linux上监视电量使用和改善笔记本电池寿命

运行如下命令生成 PowerTop 的 HTML 报告。

$ sudo powertop --html=powertop.html
modprobe cpufreq_stats failedLoaded 100 prior measurements
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
Devfreq not enabled
glob returned GLOB_ABORTED
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only
Preparing to take measurements
To show power estimates do 182 measurement(s) connected to battery only
Taking 1 measurement(s) for a duration of 20 second(s) each.
PowerTOP outputing using base filename powertop.html

打开 file:///home/daygeek/powertop.html 文件以访问生成的 PowerTOP 的 HTML 报告。

自动调整模式

这个功能可以将所有可调整选项从 BAD 设置为 GOOD，这可以提升 Linux 中的笔记本电池寿命。

$ sudo powertop --auto-tune
modprobe cpufreq_stats failedLoaded 210 prior measurements
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
Devfreq not enabled
glob returned GLOB_ABORTED
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only
To show power estimates do 72 measurement(s) connected to battery only
Leaving PowerTOP

（编辑：应用网_阳江站长网）

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