Date: Tue, 13 Dec 2005 21:48:50 +0800 From: David Xu <davidxu@freebsd.org> To: Peter Pentchev <roam@ringlet.net> Cc: freebsd-performance@freebsd.org, "Gustavo A. Baratto" <gbaratto@superb.net> Subject: Re: mysql benchmarks Message-ID: <439ED142.3070105@freebsd.org> In-Reply-To: <20051213134218.GB1142@straylight.m.ringlet.net> References: <032801c5fd32$df28c3b0$6400a8c0@garrincha> <439A4301.5030404@freebsd.org> <439A5411.8090005@lbl.gov> <20051213134218.GB1142@straylight.m.ringlet.net>
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Peter Pentchev wrote: >>So, if both systems use gettimeofday, then slow may be somewhere else. >> >> > >Errrr... I think David might have meant that the original poster should >simply set kern.timecounter.hardware to 'TSC', not i8254 or something >else. This would not change whether MySQL uses gettimefday() or not, >it would simply change the in-kernel method of obtaining the actual >time of day - at least that's how I understand it :) > >G'luck, >Peter > > > Err, I just wanted to know the best performance current FreeBSD can achieve. The timer problem had already been discussed several times in the list, I don't want to repeat it here. David Xu
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