Date: Sat, 18 Aug 2001 20:47:35 -0700 (PDT) From: Mario Doria <mariodoria@yahoo.com> To: Greg Lehey <grog@FreeBSD.org> Cc: Sean Davis <dive-fb@endersgame.net>, freebsd-questions@freebsd.org Subject: Re: microuptime() oddness Message-ID: <20010819034735.24582.qmail@web14207.mail.yahoo.com> In-Reply-To: <20010819131455.D35750@wantadilla.lemis.com>
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--- Greg Lehey <grog@FreeBSD.org> wrote: > [Format recovered--see http://www.lemis.com/email/email-format.html] > > Your MUA wraps quoted text incorrectly. > > On Saturday, 18 August 2001 at 20:42:29 -0700, Mario Doria wrote: > > > > --- Greg Lehey <grog@FreeBSD.org> wrote: > >> On Monday, 13 August 2001 at 3:25:37 -0400, Sean Davis wrote: > >>> Hello, I have a machine (AMD Athlon 1.2ghz, 256MB ram) running > >>> FreeBSD-stable, and have been noticing a lot of weird kernel > debug > >>> messages like: > >>> > >>> microuptime() went backwards (7718.041075 -> 7718.-695325418) > >>> calcru: negative time of -1984433927 usec for pid 365 > (setiathome) > >>> <repeat many, many times> > >>> > >>> Does anyone have any idea whats causing this? > >> > >> It's a bug which seems to be triggered by something to do with AMD > >> processors, though we're not sure whether it's the processor or > >> (more likely) the BIOS. If you disable APM, it should go away. I > >> have four AMD processors here, and they all showed it with APM > >> enabled. > > > > I got the same results on a Celeron @ 500MHZ on a ThinkPad A20m > Laptop. > > I had installed XFree86-4.1 and KDE2. When I was changing my > default > > fixed width font, XFree would crash and I would be back at the > console > > with lots of messages like "microuptime went backwards" and then > how > > much it went backwards. This happened also with XFree 4.0.3 and on > two > > fresh installs. I don't remember if it had apm enabled, I think it > did. > > > > Sorry I cannot give more details, but that machine right now is > with > > IBM because of hard disk problems. > Forgot to mention it, it both happened with 4.3-RELEASE and with 4.3-STABLE, CVSUPed around July 23. Mario Doria __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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