Date: Sat, 27 May 2000 12:38:36 -0700 From: Doug Barton <DougB@gorean.org> To: "Jacob A. Hart" <c9710216@studentmail.newcastle.edu.au> Cc: Sheldon Hearn <sheldonh@uunet.co.za>, FreeBSD-CURRENT <freebsd-current@FreeBSD.ORG> Subject: Re: Scheduler changes? Message-ID: <3930243C.CBAA911E@gorean.org> References: <20000526131949.A9232@carcass.au.hartware.com> <74533.959349665@axl.ops.uunet.co.za> <20000527173624.A207@carcass.au.hartware.com>
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"Jacob A. Hart" wrote:
>
> On Fri, May 26, 2000 at 04:01:05PM +0200, Sheldon Hearn wrote:
> >
> >
> > On Fri, 26 May 2000 13:19:49 +1000, "Jacob A. Hart" wrote:
> >
> > > For the past couple of weeks I've noticed rc5des isn't playing friendly with
> > > the other processes on my system. When running a CPU intensive task (such
> > > as a buildworld, MP3 encoder, or xmame) rc5des hogs around 20-30% CPU even
> > > though, by default, it is niced at +20.
> >
> > As a datapoint, I have a one week old (2000-05-18) CURRENT box that runs
> > setiathome all day every day. When builds kick in, setiathome gets
> > relagated to the single-digit percentiles in top's display of CPU users.
> > This is only true when serious building is happening; those aspects of
> > the build that I can imagine are more I/O than CPU intensive give
> > setiathome a fighting chance.
Try setting the nice value for rc5 to something lower than 20, but
higher than the highest (lowest) value running on your system. There was
a bug with the scheduler in the past that items run at nice 20 were
actually getting more cpu than they were supposed to. If this change
fixes things for you, please report it asap, since my understanding is
that this problem is rather elusive and annoying.
Thanks,
Doug
--
"Live free or die"
- State motto of my ancestral homeland, New Hampshire
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