Date: Sat, 29 Oct 2005 16:38:41 +0100 From: Thomas Hurst <tom.hurst@clara.net> To: Xin LI <delphij@frontfree.net> Cc: current@freebsd.org, Marian Hettwer <MH@kernel32.de> Subject: Re: MySQL Performance 6.0rc1 Message-ID: <20051029153841.GA29342@voi.aagh.net> In-Reply-To: <1130320668.810.87.camel@spirit> References: <435F48DA.6060009@kernel32.de> <1130320668.810.87.camel@spirit>
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[-- Attachment #1 --] * Xin LI (delphij@frontfree.net) wrote: > Some observations that I think can affect MySQL performance: > - Our malloc(3) implementation might be sub-optimal for the workload. I've tried linking MySQL against some of the alternatives in ports. I must be missing something since I could never make it do more than start up and lock up. > - Lack of some POSIX system call which was implemented in other ways > (e.g. we do not have fsyncdata yet) > - Some detailed implementation difference between our and Linux's > threading library, or MySQL itself. Terry posted an interesting comment on /. giving some reasonable sounding suggestions as to why MySQL's performance is so pessimised on FreeBSD (and others): http://slashdot.org/comments.pl?sid=162629&tid=7&cid=13611424 -- Thomas 'Freaky' Hurst http://hur.st/ [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDY5d/NBBHZ542MwQRArVzAKCKDF+7CW5jZVPuBFS0533P2S6nNACePn3h jwkR9RV/doDfHDaGFjRyoNE= =xlY7 -----END PGP SIGNATURE-----help
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