On Thu, 23 Jun 2005, Steve Roome wrote:
The different threading libraries are more for completeness. In my
last test I saw <10% difference between them on amd64.
Well, I finally got some tests out for FreeBSD/i386 with -current, Here
we go with a bunch of results of FreeBSD 6 with mysql and different
threading libraries, as for you, there's sadly not enough in it so far.
Maybe I need to tune a whole bunch of stuff I've missed ?
What version of MySQL are you using? I saw much better FreeBSD MySQL
performance with 4.0.x than 4.1.x in terms of transactions per second, and
am wondering what changed in MySQL -- did it start using different IPC
primitives, threading primitives, etc? I realize it complicates testing,
but if you have a chance to compare 4.0.x and 4.1.x across linux and
freebsd, that would be quite helpful, so we can see if there's a change in
relative performance. Most of my work to optimize MySQL performance with
SMP has been using 4.0.x, FYI, so 4.1.x might require different
optimization strategies.
Robert N M Watson
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