Re: New buffer cache + SMP + mke2fs with 4MB success

Matthias Urlichs (smurf@nova.noris.net)
14 Jul 1997 18:19:36 +0200

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Harald Koenig <koenig@tat.physik.uni-tuebingen.de> writes:
> >
> > All of next week will be dedicated to pre-2.0.31-3
>
> we've been using this patch to run "real" background jobs, which shouldn't
> compete even with "nice 19" user processes, for a long time now (both SMP
> and non-SMP) with no problems at all.
>
Um, right, but nice-19-processes shouldn't compete (much) with nice-0
processes either. Unfortunately, they do, you get 50% CPU time for both if
you wait long enough.

nova:~ 40$ ps axlr
F UID PID PPID PRI NI SIZE RSS WCHAN STAT TTY TIME COMMAND
40 202 7176 7003 20 0 1304 740 0 R p5 0:49 -bash
100040 202 7175 7170 20 9 1288 832 0 R N p9 0:29 -bash

Note the identical 'PRI' values...

-- >From a fallen tree, all make kindling. -- Spanish proverb

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