Date: Thu, 22 Dec 2005 21:04:25 +0000 From: Chris <chrcoluk@gmail.com> To: Scott Long <scottl@samsco.org> Cc: freebsd-performance@freebsd.org, Gea-Suan Lin <gslin@gslin.org>, leo.huang.gd@gmail.com, Rink Springer <rink@il.fontys.nl> Subject: Re: Benchmark MySQL Performance On FreeBSD And Linux Message-ID: <3aaaa3a0512221304p3a35b1ecj@mail.gmail.com> In-Reply-To: <43A35A1E.3020408@samsco.org> References: <20051216064615.GA41775@gslin.org> <20051216070609.GA3216@il.fontys.nl> <20051216204322.GA66409@gslin.org> <43A35A1E.3020408@samsco.org>
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On 17/12/05, Scott Long <scottl@samsco.org> wrote: > > Gea-Suan Lin wrote: > > > On Fri, Dec 16, 2005 at 08:06:09AM +0100, Rink Springer wrote: > > > >>>And you should disable these options, it may increase ~10% again: > >>> > >>>-cpu I486_CPU > >>>-cpu I586_CPU > >>> cpu I686_CPU > >> > >>A recent discussion on -STABLE warned against removing I586_CPU, refer > >>to > >> > http://lists.freebsd.org/pipermail/freebsd-stable/2005-December/020696.ht= ml > >>for more information. > > > > > > Thanks, I'll try it later. > > > > BTW, did anyone try using jemalloc to test mysql ? > > > > It was tried recently using supersmack and unix domain sockets. The > results were slightly slower (around 6%, IIRC). The theory is that > jemalloc doesn't pad out allocations as much, so there is high potential > for cache line sharing (and thus cache thrash) between CPUs. > > Scott Guys how do I know which threading library I am using, os is 5.4 STABLE and I only enabled build_static options the rest is default, so which threading library am I using. If I am not using libthr how do I use that in 5.x Thanks. Chris
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