Greg 'groggy' Lehey wrote:
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.
You find ktrace result of mysql:
http://people.freebsd.org/~davidxu/mysql/mysql_ktrace.txt
gettimeofday() almost follows every network I/O.
Also you can find its I/O size:
http://people.freebsd.org/~davidxu/mysql/iosize.txt
I guess the gettimeofday() call is relevant to mysql's
connection keepalive work, sounds like a very silly method.
David Xu
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