Re: sched_yield() version 2.4.24
From: Denis Vlasenko
Date: Tue Mar 30 2004 - 14:42:55 EST
On Tuesday 30 March 2004 19:52, Ben Greear wrote:
> Chris Friesen wrote:
> > The cpu util accounting code in kernel/timer.c hasn't changed in 2.4
> > since 2002. Must be somewhere else.
> > Anyone else have any ideas?
> As another sample point, I have fired up about 100 processes with
> each process having 10+ threads. On my dual-xeon, I see maybe 15
> processes shown as 99% CPU in 'top'. System load was near 25
> when I was looking, but the machine was still quite responsive.
There was a top bug with exactly this symptom. Fixed.
I use procps-2.0.18.
> I'm guessing this is just an artifact of having lots of processes running
> very often and top is just not able to calculate with fine enough
> This is on 2.4.25 kernel.
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