Date: Fri, 5 Mar 2004 05:17:48 +0200 From: Ion-Mihai Tetcu <itetcu@apropo.ro> To: "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: freebsd-current@freebsd.org Subject: Re: SCHED_ULE + nice strangeness? Message-ID: <20040305051748.50b6a538@it.buh.cameradicommercio.ro> In-Reply-To: <200403051303.17461.doconnor@gsoft.com.au> References: <200403051303.17461.doconnor@gsoft.com.au>
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On Fri, 5 Mar 2004 13:03:17 +1030 "Daniel O'Connor" <doconnor@gsoft.com.au> wrote: > Hi, > I have found that if I run Audacity (sound editor > ports/audio/audacity) and do a CPU intensive task (eg noise removal, > FFT filter, etc) my system becomes almost unusable (takes seconds for > the mouse to respond, X shows signs of getting CPU very very rarely > etc). > > I attempted to fudge a fix by reniceing X -20 and Audacity +10 but it > didn't seem to make things any better.. I also found that in top the > NICE column bears little resemblance to my setting.. I saw values like > -100, -140, and 0. > > I haven't tried the same thing in SCHED_4BSD.. My kernel dates from > around the beginning of February (-current) What if you try to rtprio 16 -some_root_own_process ? I got panic: Negative nice count with sources about 2 Feb trying this on portsdb -Uu.. Upgraded to yesterday sources and it's still there. Fully reproducible. I've posted details on 3, but nobody seems to care. Another strange thing: #sh while true do done and watch how sh gets in top. Kill the loop when it's about 70% CPU and switch to top again. It's still there for about 10 seconds. -- IOnut Unregistered ;) FreeBSD user
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