Date: Fri, 28 Oct 2005 12:33:11 +0300 From: Pertti Kosunen <pertti.kosunen@pp.nic.fi> To: current@freebsd.org Cc: "Yuriy N. Shkandybin" <jura@networks.ru> Subject: Re: Timers and timing, was: MySQL Performance 6.0rc1 Message-ID: <4361F057.4030904@pp.nic.fi> In-Reply-To: <43615BBB.2080702@paradise.net.nz> References: <21137.1130401220@critter.freebsd.dk> <00a801c5dacf$db3b7700$6504010a@Jura> <43613541.7030009@mac.com> <43615BBB.2080702@paradise.net.nz>
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Mark Kirkwood wrote:
> 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.]
Does polling affect to this test?
I get:
null function: 0.01060
getpid(): 0.41378
time(): 0.66705
gettimeofday(): 0.64459
FreeBSD 6.0-BETA5 #1: Sun Oct 9 13:09:23 EEST 2005
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(TM)Processor (1009.95-MHz 686-class CPU)
# Enable Polling
options DEVICE_POLLING
# Timecounter "i8254"
options HZ=2299
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