Bill Nottingham wrote:
Thomas Cameron (thomas.cameron@xxxxxxxxxxxxxxx) said:
Would you like your laptop battery to last longer? Would you like your
servers to use less electricity? We certainly would. So we're investigating
and fixing Fedora to use less juice.
Does it matter which version of Fedora we use? I am on F7 x86_64.
Not really - the results are a little more digestible on x86 due
to tickless being used there, but there's still good data to be
found.
Bill
Here's mine, f8test1 x86_64. What does it mean? :)
no ACPI power usage estimate available
Top causes for wakeups:
84.3% (987.8) <interrupt> : extra timer interrupt
8.6% (100.6) <interrupt> : eth1
4.0% ( 46.8) <interrupt> : HDA Intel
0.8% ( 8.8) <interrupt> : libata
0.5% ( 6.4) artsd : schedule_timeout (process_timeout)
0.2% ( 2.0) <kernel core> : queue_delayed_work_on
(delayed_work_timer_fn)
0.1% ( 1.6) X : do_setitimer (it_real_fn)
0.1% ( 1.6) S06cpuspeed : queue_delayed_work_on
(delayed_work_timer_fn)
0.1% ( 1.6) kdesktop : schedule_timeout (process_timeout)
0.1% ( 1.4) <interrupt> : sata_nv
0.1% ( 1.4) kwin : schedule_timeout (process_timeout)
0.1% ( 1.2) kicker : schedule_timeout (process_timeout)
0.1% ( 1.0) artsd : do_setitimer (it_real_fn)
0.1% ( 1.0) klipper : schedule_timeout (process_timeout)
0.1% ( 1.0) automount : futex_wait (hrtimer_wakeup)
0.1% ( 1.0) dhcdbd : schedule_timeout (process_timeout)
0.1% ( 1.0) kwrapper : do_nanosleep (hrtimer_wakeup)
0.1% ( 0.6) knotify : schedule_timeout (process_timeout)
0.0% ( 0.4) <kernel core> : neigh_table_init_no_netlink
(neigh_periodic_timer)
0.0% ( 0.4) gpg-agent : schedule_timeout (process_timeout)
0.0% ( 0.4) hald-addon-stor : schedule_timeout (process_timeout)
0.0% ( 0.4) klauncher : schedule_timeout (process_timeout)
0.0% ( 0.4) kded : schedule_timeout (process_timeout)
0.0% ( 0.4) yum-updatesd : schedule_timeout (process_timeout)
0.0% ( 0.2) konsole : schedule_timeout (process_timeout)
0.0% ( 0.2) X : schedule_timeout (process_timeout)
0.0% ( 0.2) rsyslogd : do_setitimer (it_real_fn)
Suggestion: Enable the CONFIG_NO_HZ kernel configuration option.
This option is required to get any kind of longer sleep times in the CPU.
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