Re: Timers and timing, was: MySQL Performance 6.0rc1

From: Mark Kirkwood (markir_at_paradise.net.nz)
Date: 10/28/05

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    Date: Fri, 28 Oct 2005 11:59:07 +1300
To: Chuck Swiger <cswiger@mac.com>

    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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