Date: Fri, 28 Oct 2005 11:59:07 +1300 From: Mark Kirkwood <markir@paradise.net.nz> To: Chuck Swiger <cswiger@mac.com> Cc: David Xu <davidxu@freebsd.org>, "Yuriy N. Shkandybin" <jura@networks.ru>, current@freebsd.org Subject: Re: Timers and timing, was: MySQL Performance 6.0rc1 Message-ID: <43615BBB.2080702@paradise.net.nz> In-Reply-To: <43613541.7030009@mac.com> References: <21137.1130401220@critter.freebsd.dk> <00a801c5dacf$db3b7700$6504010a@Jura> <43613541.7030009@mac.com>
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Chuck Swiger wrote:
> FreeBSD 5.4-STABLE i386
> null function: 0.01278
> getpid(): 0.51329
> time(): 2.54771
> gettimeofday(): 2.54982
>
Chuck - very interesting results. I happen to have a PIII 1Ghz running
5.4-RELEASE so thought it would be interesting to reproduce your
numbers. My null and getpid pretty much do, but the time functions seem
much quicker on my machine - some sort of regression in 5.4-STABLE maybe?
null function: 0.01578
getpid(): 0.49136
time(): 0.83031
gettimeofday(): 0.78838
However, we are still slower than Linux :-(.
[Running a pretty much stock kernel, except for:
#cpu I486_CPU
#cpu I586_CPU
and timer.c is compiled w/o any optimization.]
cheers
Mark
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