I didn't personally measure it, though someday I hope to be able to,
but I did read in several places that using the ULE scheduler was the
better choice to use with FreeBSD. Here are the links that are
noteworthy:
http://wikitest.freebsd.org/moin.cgi/MySQL
http://blog.gslin.org/archives/2005/12/12/252/
Romeo
On Jan 27, 2006, at 3:22 PM, Kris Kennaway 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
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