Date: Fri, 28 Oct 2005 11:43:32 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: "Yuriy N. Shkandybin" <jura@networks.ru>, David Xu <davidxu@freebsd.org>, Mark Kirkwood <markir@paradise.net.nz>, current@freebsd.org Subject: Re: Timers and timing, was: MySQL Performance 6.0rc1 Message-ID: <30513.1130492612@critter.freebsd.dk> In-Reply-To: Your message of "Fri, 28 Oct 2005 11:10:16 %2B0200." <20051028091016.GC3596@garage.freebsd.pl>
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In message <20051028091016.GC3596@garage.freebsd.pl>, Pawel Jakub Dawidek write s: > >--eHhjakXzOLJAF9wJ >Content-Type: text/plain; charset=iso-8859-2 >Content-Disposition: inline >Content-Transfer-Encoding: quoted-printable > >On Fri, Oct 28, 2005 at 10:47:06AM +0200, Poul-Henning Kamp wrote: >+> In message <20051028083337.GB3596@garage.freebsd.pl>, Pawel Jakub Dawide= >k write >+> s: >+>=20 >+> >Hmm:) On mine t43: >+> > >+> > null function: 0.00403 >+> > getpid(): 0.30784 >+> > time(): 1.94495 >+> > gettimeofday(): 1.94236 >+> > >+> >Timecounter "i8254" frequency 1193182 Hz quality 0 >+>=20 >+> ...This is not relevant information, because... >+>=20 >+> >kern.timecounter.hardware: ACPI-fast >+>=20 >+> You're using the ACPI-fast timecounter. > >I thought so:) Is there a way to switch used timecounter or is this choosen >automatically? By default the timecounter with the highest score is selected (but negative scores are never selected automatically). You can override this with sysctl kern.timecounter.hardware=something where something is one of the timecounters listed in kern.timecounter.choice -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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