a scheduling question
Mikhail Teterin
mi at corbulon.video-collage.com
Wed May 19 20:34:50 PDT 2004
Here is a top's snapshot from a dual CPU machine. Two lame encoders
compete for the first CPU, while the total idle time is 35.6%. Why is
that? Because they are nice? Is niceness really supposed to allow for
wasted CPU? Thanks!
5.2-CURRENT #0: Wed May 12
-mi
last pid: 947; load averages: 1.69, 1.27, 1.25 up 1+23:07:07 23:30:41
144 processes: 3 running, 138 sleeping, 1 stopped, 2 zombie
CPU states: 4.9% user, 51.2% nice, 7.0% system, 1.4% interrupt, 35.6% idle
Mem: 461M Active, 235M Inact, 191M Wired, 48M Cache, 111M Buf, 62M Free
Swap: 2048M Total, 288K Used, 2047M Free
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND
842 mi 139 10 3216K 2056K RUN 0 0:32 46.09% 46.09% lame
454 mi 139 10 3216K 2056K RUN 0 1:11 44.53% 44.53% lame
476 mi -8 10 5920K 5108K cbwait 1 0:08 7.03% 7.03% cdparanoi
411 mi -8 10 6664K 5952K cbwait 0 0:06 4.69% 4.69% cdparanoi
687 root 77 0 209M 162M select 1 210:44 3.12% 3.12% XFree86
743 root 95 18 3456K 1844K select 1 112:34 3.12% 3.12% fam
32537 mi 77 0 90424K 43896K select 1 64:32 3.12% 3.12% kdeinit
[...]
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