Date: Sat, 28 Jan 2006 13:03:31 +0000 From: Chris <chrcoluk@gmail.com> To: Kris Kennaway <kris@obsecurity.org> Cc: Romeo Theriault <romeotheriault@gmail.com>, freebsd-questions@freebsd.org Subject: Re: mysql - linuxthreads Message-ID: <3aaaa3a0601280503t2dc3e92ej@mail.gmail.com> In-Reply-To: <20060127202202.GA65737@xor.obsecurity.org> References: <DD408EDB-CC70-47BC-A8A9-3B0CE21596AD@gmail.com> <20060127202202.GA65737@xor.obsecurity.org>
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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? Chris
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