Date: Thu, 07 Jul 2011 14:21:27 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-questions@freebsd.org Cc: freebsd-current@freebsd.org Subject: Re: Heavy I/O blocks FreeBSD box for several seconds Message-ID: <iv48c7$nab$2@dough.gmane.org> In-Reply-To: <4E14A54A.4050106@freebsd.org> References: <20110706170132.GA68775@troutmask.apl.washington.edu> <5080.1309971941@critter.freebsd.dk> <20110706180001.GA69157@troutmask.apl.washington.edu> <4E14A54A.4050106@freebsd.org>
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On 06/07/2011 20:11, Nathan Whitehorn wrote: > I've seen exactly this problem with multi-threaded math libraries, as > well. Using parallel GotoBLAS on FreeBSD gives terrible performance > because the threads keep migrating between CPUs, causing frequent cache > misses. On both schedulers?
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