Date: Mon, 30 Jun 2008 21:03:03 +0200 From: Kris Kennaway <kris@FreeBSD.org> To: Michel Talon <talon@lpthe.jussieu.fr> Cc: questions@FreeBSD.org Subject: Re: Too Much Context Switching? Message-ID: <48692DE7.3020502@FreeBSD.org> In-Reply-To: <20080630181755.GA3327@lpthe.jussieu.fr> References: <20080630165205.GA3033@lpthe.jussieu.fr> <48691D7C.2090804@FreeBSD.org> <20080630181755.GA3327@lpthe.jussieu.fr>
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Michel Talon wrote: > On Mon, Jun 30, 2008 at 07:53:00PM +0200, Kris Kennaway wrote: >> Yep, it could be that -- what confuses me though is that it is claimed >> that performance suddenly regressed. If so then this cannot be the >> underlying cause. > > It may be that the load has augmented to the point that contention > imposes a rapid regression on throughput. Yes, it could be that. I don't know off-hand whether multiple threads are counted separately by vmstat (at a guess I'd say no), but ps/top/etc should show how many are active in the python process. Kris
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