Date: Sun, 7 May 2006 21:09:00 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Kris Kennaway <kris@obsecurity.org> Cc: performance@freebsd.org, current@freebsd.org, csjp@FreeBSD.org Subject: Re: Fine-grained locking for POSIX local sockets (UNIX domain sockets) Message-ID: <20060507210824.F17611@fledge.watson.org> In-Reply-To: <20060507195941.GA2978@xor.obsecurity.org> References: <20060506150622.C17611@fledge.watson.org> <200605071949.54978.hadara@bsd.ee> <20060507190844.K46997@fledge.watson.org> <200605072200.42529.hadara@bsd.ee> <20060507191641.GA1851@xor.obsecurity.org> <20060507205627.B46997@fledge.watson.org> <20060507195941.GA2978@xor.obsecurity.org>
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On Sun, 7 May 2006, Kris Kennaway wrote: >> Typically, I do 12 runs of supersmack in each configuration, and discard >> the first 2 runs in which the cache and scheduler (etc) are still settling, >> as I'm interested in the steady state. > > Yeah, forgot to mention that too. Also keeping in mind that mysql > performance is not time-constant, e.g. you should restart it in between test > configurations instead of comparing early and late times. Yeah, very much so -- my normal test procedure is to reboot between runs, allowing the first to cycles in the test to warm things up. Robert N M Watson
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