Date: Fri, 10 Jun 2005 17:08:48 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Tom Gidden <gid@lonres.com> Cc: freebsd-stable@freebsd.org, Guy Helmer <ghelmer@palisadesys.com> Subject: Re: FreeBSD MySQL still WAY slower than Linux Message-ID: <20050610210847.GA58308@xor.obsecurity.org> In-Reply-To: <57D8CF12-24EA-4017-863C-D4F31FAFF35D@lonres.com> References: <746fd037f6ca8131a8fb8938f1e346e9@lonres.com> <20050610170537.GA67849@bibipentium.lonres.com> <42A9FA02.5080401@palisadesys.com> <57D8CF12-24EA-4017-863C-D4F31FAFF35D@lonres.com>
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--pf9I7BMVVzbSWLtt Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 10, 2005 at 10:04:23PM +0100, Tom Gidden wrote: > Hi Guy, >=20 > On 10 Jun 2005, at 21:37, Guy Helmer wrote: > > > >Have you tried a kernel with PREEMPTION enabled? I haven't =20 > >quantified the effect, but it's improved performance in some =20 > >situations. > >Have you tried increasing vfs.read_max? >=20 > Thanks for your suggestions... I've given them a go, and it looks =20 > like there's no discernible difference in performance for either/=20 > both, on KSE, libthr or LinuxThreads. =3D( 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. Kris --pf9I7BMVVzbSWLtt Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCqgFfWry0BWjoQKURAmulAJ9BQX+hTluS2hvGV0ruqASVQ7Rn5ACgjJ/P Xkn6Ig+9fxYWEbY5MDRml9Y= =aUBo -----END PGP SIGNATURE----- --pf9I7BMVVzbSWLtt--
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