Date: Fri, 10 Jun 2005 19:05:00 -0400 (EDT) From: Daniel Eischen <deischen@freebsd.org> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-stable@freebsd.org, Tom Gidden <gid@lonres.com>, Guy Helmer <ghelmer@palisadesys.com> Subject: Re: FreeBSD MySQL still WAY slower than Linux Message-ID: <Pine.GSO.4.43.0506101904250.11535-100000@sea.ntplx.net> In-Reply-To: <20050610210847.GA58308@xor.obsecurity.org>
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On Fri, 10 Jun 2005, Kris Kennaway wrote: > On Fri, Jun 10, 2005 at 10:04:23PM +0100, Tom Gidden wrote: > > Hi Guy, > > > > On 10 Jun 2005, at 21:37, Guy Helmer wrote: > > > > > >Have you tried a kernel with PREEMPTION enabled? I haven't > > >quantified the effect, but it's improved performance in some > > >situations. > > >Have you tried increasing vfs.read_max? > > > > Thanks for your suggestions... I've given them a go, and it looks > > like there's no discernible difference in performance for either/ > > both, on KSE, libthr or LinuxThreads. =( > > Did you retry with HTT yet? Note that it's disabled by default in > FreeBSD, so if you see no performance improvement when you only turn > it on in the BIOS, that could be why. Or repeat the Linux tests without HTT enabled. -- DE
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