May 2017
Beginner
552 pages
28h 47m
English
Content preview from Linux Shell Scripting Cookbook - Third Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
How to do it...
The powertop application measures per-module power consumption and supports interactively optimizing power consumption:
With no options, powertop presents a display on the terminal:
# powertop
The powertop command takes measurements and displays detailed information about power usage, the processes using the most power, and so on:
PowerTOP 2.3 Overview Idle stats Frequency stats Device stats Tunable Summary: 1146.1 wakeups/sec, 0.0 GPU ops/secs, 0.0 VFS ops/sec and 73.0% C Usage Events/s Category Description 407.4 ms/s 258.7 Process /usr/lib/vmware/bin/vmware 64.8 ms/s 313.8 Process /usr/lib64/firefox/firefox
The -html tag will cause powertop to take measurements over a period of time and generate an HTML report with ...