Date: Fri, 31 Aug 2001 11:13:24 +0930 From: Greg Lehey <grog@FreeBSD.org> To: clemensF <rabat@web.de> Cc: FreeBSD Questions <questions@FreeBSD.org> Subject: Re: microuptime() went backwards Message-ID: <20010831111324.A57354@wantadilla.lemis.com> In-Reply-To: <20010830060127.L19000@spotteswoode.yi.org>; from rabat@web.de on Thu, Aug 30, 2001 at 06:01:27AM %2B0200 References: <20010830060127.L19000@spotteswoode.yi.org>
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[redirected to -questions; this is not a -stable issue] On Thursday, 30 August 2001 at 6:01:27 +0200, clemensF wrote: > the clock skew on my k2-6 pc is indicated, usually between the third and > forth decimal after the dot, and i can't get it right. the problem is > worst with freebsd, i did not see it with openbsd. > > i tried: "sysctl -w kern.timecounter.method=1", which is the standard > setting now, no success. i even fiddled with "options NTIMECOUNTER=20" > entries in my kernel config, this also did not help. i had the counter > from 5 up to a few thousand(!), to no avail. > > doesn't this look like interrupts beeing masked for too long? > > clemens > > ps: typical entries in `dmesg -a` look like: > > Wed Aug 29 16:12:25 CEST 2001 > microuptime() went backwards (7633.019507 -> 7633.019407) > pid 16331 (vile), uid 65534: exited on signal 6 (core dumped) > cd9660: RockRidge Extension > microuptime() went backwards (27387.137508 -> 27387.137407) > microuptime() went backwards (27888.555071 -> 27888.554971) > microuptime() went backwards (37977.157270 -> 37977.156967) > > happens from thrice up to a few dozen times, depending on load. > > the board is a gigabyte GA-5AA, super7 mainboard with a k6-2 550Mhz, the > graphics are a "bulk" Xpert@play, agp interfaced. Try disabling APM. Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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