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Date:      Wed, 26 Oct 2005 13:38:07 +0100 (BST)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        Marian Hettwer <MH@kernel32.de>
Cc:        current@freebsd.org
Subject:   Re: MySQL Performance 6.0rc1
Message-ID:  <20051026133606.O32255@fledge.watson.org>
In-Reply-To: <435F6B01.5020003@kernel32.de>
References:  <435F48DA.6060009@kernel32.de> <20051026105411.L32255@fledge.watson.org> <435F6B01.5020003@kernel32.de>

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On Wed, 26 Oct 2005, Marian Hettwer wrote:

>> - Use libmap to configure the mysql server to use libthr instead of
>>   libpthread
>> 
> uh. Last time I fiddled around with libmap.conf was back in FreeBSD 5.1 
> ... could you enlighten me a wee bit in regards to libmap.conf ? :) If 
> not, I'll stress google a bit and hopefully find something useful...

libmap.conf(5) has the details, including examples.  The easy (cheating) 
way to accomplish the same thing is to replace /usr/lib/libpthread with 
/usr/lib/libthr :-).  Remember that for linker changes to the thread 
library to affect an application, you need to stop and restart the 
application.

> my.cnf is pretty much my-medium.cnf on Debian and FreeBSD. Although, 
> Debian has MySQL 4.1.11 and FreeBSD Ports has MySQL 4.1.14. As mentioned 
> before, this benchmark here is a quick shot. However, the difference 
> shouldn't be _that_ large (3600 vs. 14000).

I think you will find people generally agree with this viewpoint. :-)

BTW, you're running MySQL over UNIX domain sockets, not TCP, right?

Robert N M Watson



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