On Thu, 16 Jun 2005, Steve Roome wrote:
The good news though, is that the Mysql folks have agreed to setup tests
to profile mysql on identical hardware running FreeBSD and Linux with an
aim to find out exactly where the problem really is. They reckon they'll
spend at least two weeks trying to find out why Linux is so much faster
- if they do this right I'd be surprised if we can't improve things
quite a lot.
Also, it'd be good if any of you who still have an interest in this
could add any ideas or suggestions that may help *them* with their
testing. If so, just get in touch with me asap before they get too stuck
into anything that might prove fruitless.
Here's hoping we can get MySQL running as well on FreeBSD as it ought
to.
Please let me know if there's any support for this activity I can provide.
I spent a fair amount of time identifying bottlenecks for MySQL in the 5.x
cycle, and I know David Xu ([EMAIL PROTECTED]) has also spent quite a
bit of time looking at the threading side, resulting in a lot of his work
on libthr in 6.x. It would probably be a good idea to (a) move further
discussion to [EMAIL PROTECTED], and (b) make sure that the
performance work is starting with a recent 6.x baseline (with debugging
turned off).
thanks for the time you've been putting into this!
Robert N M Watson
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