Subject: sysmon uses more power
To: None <tech-kern@netbsd.org>
From: Iain Hibbert <plunky@rya-online.net>
List: tech-kern
Date: 09/23/2007 10:50:19
Hi,
I noticed after updating kernel recently that when my laptop is
otherwise quiescent (eg left on overnight), the fan is coming on every 20
seconds or so as if there is some CPU intensive task running. previously I
could tell when a build had finished by the lack of noise..
looking at the output from 'top -tSd1':
load averages: 0.01, 0.01, 0.05 up 0 days, 17:24 09:04:40
59 threads: 1 idle, 57 sleeping, 1 on processor
CPU states: % user, % nice, % system, % interrupt, % idle
Memory: 112M Act, 71M Inact, 708K Wired, 15M Exec, 130M File, 41M Free
Swap: 256M Total, 3256K Used, 253M Free
PID LID USERNAME PRI STATE TIME WCPU CPU COMMAND NAME
0 3 root 27 smtaskq 3:00 1.12% 1.12% [system] sysmon
246 1 root -14 select 19:46 0.00% 0.00% XFree86 -
408 1 plunky -14 select 1:46 0.00% 0.00% icewm -
0 20 root 18 syncer 0:10 0.00% 0.00% [system] ioflush
1866 1 plunky -14 select 0:06 0.00% 0.00% gnome-vfs-da -
0 14 root -22 envsysev 0:05 0.00% 0.00% [system] envsysev
493 1 plunky -14 select 0:04 0.00% 0.00% screen-4.0.3 -
3550 1 plunky -14 select 0:03 0.00% 0.00% xterm -
0 23 root -6 physiod 0:01 0.00% 0.00% [system] physiod
802 1 plunky -14 select 0:01 0.00% 0.00% gconfd-2 -
2332 1 plunky -14 select 0:01 0.00% 0.00% screen-4.0.3 -
0 2 root 106 IDLE 0:00 0.00% 0.00% [system] idle/0
4343 1 plunky 28 CPU 0:00 0.00% 0.00% top -
0 15 root 10 usbevt 0:00 0.00% 0.00% [system] usb1
0 17 root 10 usbevt 0:00 0.00% 0.00% [system] usb2
0 13 root 10 cardslot 0:00 0.00% 0.00% [system] cardslot1
0 12 root 10 cardslot 0:00 0.00% 0.00% [system] cardslot0
0 11 root 10 pmsreset 0:00 0.00% 0.00% [system] pms0
I see that the [sysmon] task is using significant amounts of cpu time; is
this proper?
iain