Date: Fri, 27 Oct 2006 10:06:38 +0800 From: David Xu <davidxu@freebsd.org> To: John Birrell <jb@what-creek.com> Cc: current@freebsd.org Subject: Re: HEADSUP: KSE about to become a kernel option Message-ID: <200610271006.38851.davidxu@freebsd.org> In-Reply-To: <20061027005733.GA31389@what-creek.com> References: <20061026213343.GA29160@what-creek.com> <200610270851.39444.davidxu@freebsd.org> <20061027005733.GA31389@what-creek.com>
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On Friday 27 October 2006 08:57, John Birrell wrote: > On Fri, Oct 27, 2006 at 08:51:39AM +0800, David Xu wrote: > > By compiling kernel without KSE option, super-smack's select-key.smack > > with 10 clients on Athlon64 dual-core 3800+ breaks 31000 q/s, otherwise > > it can only get 29000 q/s. Mysql version is 5.0.24a, FreeBSD AMD64. > > So that must be the difference in context switch time? > > -- > John Birrell I assume that without KSE, the scheduler's code size is reduced, this saves I-CACHE and execution time. David Xu
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