Date: Mon, 29 Oct 2012 21:06:00 -0500 From: Chuck Burns <break19@gmail.com> To: freebsd-stable@freebsd.org Subject: Re: CPU Competition Issue Message-ID: <508F3608.3000301@gmail.com> In-Reply-To: <M.O.0.1210292022200.70211@ertyu.org> References: <M.O.0.1210292022200.70211@ertyu.org>
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On 10/29/2012 08:33 PM, Steven Nikkel wrote: > I'm running a long duration CPU-centric process that will gobble up all > available CPU time. I have it set to run at nice +20. While it's running > I've noticed other processes have a hard time getting CPU time and run > their activites very slowly. The processes I've noticed issues with are > IO involved, but they don't appear to be IO blocked as they run > dramatically faster and use much more CPU time when the CPU intensive > process is not running. I haven't noticed issues with other processes, > but I haven't been looking. If I push my CPU intensive process into idle > priority 1, all the other processes return to their normal behaviour as > if it's not running. > > This seems to be a specific behaviour on this one machine running > 9.0-RELEASE-p4 on an Atom 330 dual core. I've tried with and without > hyperthreading enabled with no noticeable change in behaviour. > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" I will likely irritate some people, but you could try the 4BSD scheduler, see if that gives you better results.
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