Steve Roome wrote:
Sorry, good point, here's the my.cnf we're using. Please note however
that although the configuration may not be optimal, we have been using
the same config for benchmarking on Linux also. No matter how broken
this my.cnf is we still shouldn't find MySQL running half the speed on
an "identical" setups only switching from Linux to FreeBSD.
Hi,
Have you tested some more real-world queries on Linux vs. FreeBSD?
The select-key.smack is a very simple test, a very small table (5.3MB on
disk, 90k rows), no joins/sorts and only selects from index. Maybe the
performance difference just affects the connect/communication/thread
syncronistaion and thus this simple test is a worst case test of
performance between Linux & FreeBSD.
I'll try to set up something here so I can make some tests too...
How does a P4/Xeon compare to Athlon64/Opteron on these tests (Linux vs
FreeBSD) the long pipeline in the P4 (Prescott/Nocona) is difficult to
optimize for, SMP syncronisation is also much more expensive on
netburst, maybe the are better at doing this in Linux?
Regards,
Martin
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