Date: Tue, 15 May 2001 08:53:38 -0600 From: Charles Randall <crandall@matchlogic.com> To: 'Poul-Henning Kamp' <phk@critter.freebsd.dk>, Dave Leimbach <dleimbac@MPI-Softtech.Com> Cc: tlambert2@mindspring.com, eischen@vigrid.com, dillon@earth.backplane.com, dleimbac@earthlink.net, freebsd-questions@FreeBSD.ORG, arch@FreeBSD.ORG Subject: RE: Gettimeofday Again... Message-ID: <5FE9B713CCCDD311A03400508B8B30130828ED85@bdr-xcln.corp.matchlogic.com>
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Isn't that what kern.timecounter.method (documented in the microtime() man page) is for? That manual page states that this can be toggled. Charles -----Original Message----- From: Poul-Henning Kamp [mailto:phk@critter.freebsd.dk] Sent: Tuesday, May 15, 2001 8:11 AM To: Dave Leimbach Cc: tlambert2@mindspring.com; eischen@vigrid.com; dillon@earth.backplane.com; dleimbac@earthlink.net; freebsd-questions@FreeBSD.ORG; arch@FreeBSD.ORG Subject: Re: Gettimeofday Again... In message <200105151353.IAA27481@MPI-Softtech.Com>, Dave Leimbach writes: >Thanks for all of the great answers... > >For now if I want to see better performance of the timing code I can just >"sysctl -w kern.timecounter.hardware=TSC"?? You can try it, but depending on a lot of stuff it may not A) work nor B) be a good idea if it does. If you want a faster (but less exact!) gettimeofday, change the call to microtime() to getmicrotime() in the gettimeofday() in kern_time.c -- 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. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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