new benchmarks. WAS: FreeBSD MySQL still WAY slower than Linux

[Greg 'groggy' Lehey]

On Friday,  2 December 2005 at 13:23:50 +1100, Michael Vince wrote:
> It would be good to actually see the Linux performance on the exact same
> hardware, all we ever see is how it is on FreeBSD.
>
> MySQL has very frequent use of queries of the system time and is
> well known in FreeBSD to be slower because its more expensive to
> call compared to Linux, which has less precision time.

I've heard this claim again and again, and I intend to look at it when
I have time.  I find it difficult to believe that this alone could
explain the sometimes horrendous performance differences (3 to 1) that
have been reported.

Can somebody tell me:

1.  How many calls there are per second?
2.  Where they're coming from?  This would involve profiling, of
    course.

Greg
--
See complete headers for address and phone numbers.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-performance/attachments/20051209/881a100f/attachment.bin