Date: Mon, 27 Aug 2001 20:23:26 +0100 From: David Malone <dwmalone@maths.tcd.ie> To: Martin Blapp <mb@imp.ch> Cc: freebsd-bugs@FreeBSD.org Subject: Re: kern/30135: Time drifting on STABLE SMP when calling gettimeofday Message-ID: <20010827202326.A99505@walton.maths.tcd.ie> In-Reply-To: <200108271750.f7RHo2j29464@freefall.freebsd.org>; from mb@imp.ch on Mon, Aug 27, 2001 at 10:50:02AM -0700 References: <200108271750.f7RHo2j29464@freefall.freebsd.org>
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On Mon, Aug 27, 2001 at 10:50:02AM -0700, Martin Blapp wrote: > But why does gettimeofday() modify the system counter > only on SMP systems ? Can you see what "sysctl kern.timecounter.hardware" outputs under SMP and UP on that machine? I'd expect the SMP one to say "i8254" and the UP one to say "TSC". When running UP you could try changing the timecounter to whatever is in use under SMP and see if the problem can then be reproduced under UP. David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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