![如何调试 tick_sched_timer 高电量使用率?](https://linux22.com/image/1629355/%E5%A6%82%E4%BD%95%E8%B0%83%E8%AF%95%20tick_sched_timer%20%E9%AB%98%E7%94%B5%E9%87%8F%E4%BD%BF%E7%94%A8%E7%8E%87%EF%BC%9F.png)
我的 tick_sched_timer 消耗了大量电量,这是 powertop 的输出:
The battery reports a discharge rate of 24.7 W
The power consumed was 516 J
The estimated remaining time is 3 hours, 0 minutes
Summary: 2419.8 wakeups/second, 0.0 GPU ops/seconds, 0.0 VFS ops/sec and 54.8% CPU use
Power est. Usage Events/s Category Description
2.38 W 5.5 ms/s 600.6 Timer tick_sched_timer
1.15 W 294.3 ms/s 174.1 Process [PID 3900] /usr/lib/firefox/firefox -contentproc -childID 3 -isForBrowser -prefsLen 244 -prefMapSize 220560 -parentBuildID 2020
845 mW 9.0 ms/s 209.6 Process [PID 3749] /usr/lib/firefox/firefox -new-window
615 mW 4.3 ms/s 154.0 Process [PID 3773] /usr/lib/firefox/firefox -new-window
561 mW 7.8 ms/s 137.6 Process [PID 3920] /usr/lib/firefox/firefox -contentproc -childID 3 -isForBrowser -prefsLen 244 -prefMapSize 220560 -parentBuildID 2020
408 mW 4.8 ms/s 101.4 Timer hrtimer_wakeup
387 mW 9.4 ms/s 94.3 Process [PID 3906] /usr/lib/firefox/firefox -contentproc -childID 3 -isForBrowser -prefsLen 244 -prefMapSize 220560 -parentBuildID 2020
340 mW 9.8 ms/s 82.2 Process [PID 2895] /usr/share/teams/teams --type=renderer --autoplay-policy=no-user-gesture-required --enable-features=SharedArrayBuffe
328 mW 36.8 ms/s 67.3 Process [PID 4103] /usr/lib/firefox/firefox -contentproc -childID 6 -isForBrowser -prefsLen 7352 -prefMapSize 220560 -parentBuildID 202
243 mW 11.6 ms/s 56.9 Process [PID 2518] /usr/share/teams/teams
209 mW 8.0 ms/s 49.7 Process [PID 3784] /usr/lib/firefox/firefox -new-window
200 mW 6.8 ms/s 47.9 Interrupt [7] sched(softirq)
166 mW 10.0 ms/s 36.6 Process [PID 3737] /usr/lib/firefox/firefox -new-window
160 mW 13.0 ms/s 32.7 Process [PID 3774] /usr/lib/firefox/firefox -new-window
152 mW 3.8 ms/s 37.1 Process [PID 2892] /usr/share/teams/teams --type=renderer --autoplay-policy=no-user-gesture-required --enable-features=SharedArrayBuffe
148 mW 0.9 ms/s 37.0 kWork engine_retire
139 mW 19.7 ms/s 27.3 Process [PID 3875] /usr/lib/firefox/firefox -contentproc -childID 2 -isForBrowser -prefsLen 244 -prefMapSize 220560 -parentBuildID 2020
115 mW 8.4 ms/s 23.6 Process [PID 2303] /usr/bin/gnome-shell
113 mW 4.4 ms/s 26.8 Process [PID 2597] /usr/share/teams/teams
102 mW 623.3 µs/s 25.6 Interrupt [0] HI_SOFTIRQ
98.6 mW 1.2 ms/s 24.5 Process [PID 3891] /usr/lib/firefox/firefox -contentproc -childID 2 -isForBrowser -prefsLen 244 -prefMapSize 220560 -parentBuildID 2020
97.7 mW 6.9 ms/s 22.0 Process [PID 4226] /usr/lib/firefox/firefox -contentproc -childID 7 -isForBrowser -prefsLen 7399 -prefMapSize 220560 -parentBuildID 202
96.8 mW 148.8 µs/s 24.4 kWork idle_work_handler
88.8 mW 291.3 µs/s 22.4 Process [PID 11] [rcu_sched]
84.3 mW 5.2 ms/s 19.3 Process [PID 5261] /usr/lib/firefox/firefox -contentproc -childID 12 -isForBrowser -prefsLen 7445 -prefMapSize 220560 -parentBuildID 20
81.2 mW 1.1 ms/s 20.1 Interrupt [17] idma64.1
71.8 mW 0.9 ms/s 17.8 Process [PID 4249] /usr/lib/firefox/firefox -contentproc -childID 7 -isForBrowser -prefsLen 7399 -prefMapSize 220560 -parentBuildID 202
71.4 mW 3.0 ms/s 16.9 Process [PID 2188] /usr/bin/ibus-daemon --daemonize --xim
65.3 mW 12.2 ms/s 10.8 Process [PID 2064] /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -background none -noreset -keeptty -verbose
59.6 mW 0.8 ms/s 14.8 Process [PID 4126] /usr/lib/firefox/firefox -contentproc -childID 6 -isForBrowser -prefsLen 7352 -prefMapSize 220560 -parentBuildID 202
56.0 mW 1.6 ms/s 13.6 Process [PID 5333] /usr/lib/firefox/firefox -contentproc -childID 13 -isForBrowser -prefsLen 7493 -prefMapSize 220560 -parentBuildID 20
53.0 mW 127.3 µs/s 13.4 kWork psi_avgs_work
您知道我怎样才能找出导致此问题的原因吗?