Date: Fri, 28 Oct 2005 10:33:37 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: David Xu <davidxu@freebsd.org> Cc: Mark Kirkwood <markir@paradise.net.nz>, current@freebsd.org, "Yuriy N. Shkandybin" <jura@networks.ru> Subject: Re: Timers and timing, was: MySQL Performance 6.0rc1 Message-ID: <20051028083337.GB3596@garage.freebsd.pl> In-Reply-To: <436171E2.6050206@freebsd.org> References: <21137.1130401220@critter.freebsd.dk> <00a801c5dacf$db3b7700$6504010a@Jura> <43613541.7030009@mac.com> <43615BBB.2080702@paradise.net.nz> <4361683E.7040504@freebsd.org> <436171E2.6050206@freebsd.org>
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On Fri, Oct 28, 2005 at 08:33:38AM +0800, David Xu wrote:
+> Run it on IBM thinkpad T43:
+> null function: 0.00435
+> getpid(): 0.27038
+> time(): 4.67393
+> gettimeofday(): 4.66421
+>
+> gettimeofday is horribly slow.
+> The system has Intel 915PM chipsets, Pentium 1.86Ghz,
+> powerd daemon is turned off.
Hmm:) On mine t43:
null function: 0.00403
getpid(): 0.30784
time(): 1.94495
gettimeofday(): 1.94236
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) M processor 2.00GHz (1995.01-MHz 686-class CPU)
# sysctl kern.timecounter
kern.timecounter.stepwarnings: 0
kern.timecounter.nbinuptime: 728148402
kern.timecounter.nnanouptime: 2
kern.timecounter.nmicrouptime: 2477266
kern.timecounter.nbintime: 597941774
kern.timecounter.nnanotime: 24410690
kern.timecounter.nmicrotime: 573531048
kern.timecounter.ngetbinuptime: 1385823
kern.timecounter.ngetnanouptime: 128529
kern.timecounter.ngetmicrouptime: 104152069
kern.timecounter.ngetbintime: 0
kern.timecounter.ngetnanotime: 18
kern.timecounter.ngetmicrotime: 7198569
kern.timecounter.nsetclock: 4
kern.timecounter.hardware: ACPI-fast
kern.timecounter.choice: TSC(800) ACPI-fast(1000) i8254(0) dummy(-1000000)
kern.timecounter.tick: 1
--
Pawel Jakub Dawidek http://www.wheel.pl
pjd@FreeBSD.org http://www.FreeBSD.org
FreeBSD committer Am I Evil? Yes, I Am!
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