Date: Sat, 28 Jan 2006 13:49:01 -0500 From: Kris Kennaway <kris@obsecurity.org> To: Chris <chrcoluk@gmail.com> Cc: Romeo Theriault <romeotheriault@gmail.com>, freebsd-questions@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: mysql - linuxthreads Message-ID: <20060128184900.GA25785@xor.obsecurity.org> In-Reply-To: <3aaaa3a0601280503t2dc3e92ej@mail.gmail.com> References: <DD408EDB-CC70-47BC-A8A9-3B0CE21596AD@gmail.com> <20060127202202.GA65737@xor.obsecurity.org> <3aaaa3a0601280503t2dc3e92ej@mail.gmail.com>
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--OgqxwSJOaUobr8KG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sat, Jan 28, 2006 at 01:03:31PM +0000, Chris wrote: > On 27/01/06, Kris Kennaway <kris@obsecurity.org> wrote: > > > > On Fri, Jan 27, 2006 at 03:15:05PM -0500, Romeo Theriault wrote: > > > A week or so ago I wrote to the this list asking about Freebsd and > > > Mysql, wondering if you still needed to compile Mysql with > > > linuxthreads to get better performance under Freebsd 6. I didn't get > > > much of a response so I looked around for the answer. I thought I'd > > > write back to the mailing list to tell anyone interested what I found. > > > > Thanks, this is always useful! > > > > > In the Freebsd 6.0 is seems that to get the best MySQL performance > > > you need to do a few things. > > > #compile your kernel with the ULE scheduler > > > > I'd be inclined to doubt this..all my measurements show ULE is slower > > than 4BSD except at negligible load. How did you measure it? > > > > > #use the TSC timecounter > > > #use the libthr threading library with mysql > > > > You definitely want libthr. > > > > Kris > > > > > > > is there large differences between libthr on 6.x and 5.x, I mean is libthr > the best option for 5.x also? I don't know, sorry. You should try it and see - it's easy to switch in using libmap.conf. Kris --OgqxwSJOaUobr8KG Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFD27ycWry0BWjoQKURApWaAJwJAaNl74jiYbQzLEsiBXjRCFaIIACeKemO cBNJq9ZDvjIdaP7gLYbVPCM= =/FEA -----END PGP SIGNATURE----- --OgqxwSJOaUobr8KG--
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