Date: Sat, 05 Sep 1998 09:33:10 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Terry Lambert <tlambert@primenet.com> Cc: mike@smith.net.au (Mike Smith), bde@zeta.org.au, caj@lfn.org, freebsd-current@FreeBSD.ORG Subject: Re: bzero bandwidth computation Message-ID: <11201.904980790@critter.freebsd.dk> In-Reply-To: Your message of "Sat, 05 Sep 1998 07:07:47 -0000." <199809050707.AAA29484@usr08.primenet.com>
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In message <199809050707.AAA29484@usr08.primenet.com>, Terry Lambert writes: >> The current set of symptoms *seem* to be related to cycle-counter >> related interpolation being off because either the tick rate is erratic >> or the CPU speed is non-constant. It's looking like we can't rely on >> the cycle counter for accurate timing - this will be an issue with >> desktops as PC98 and PC99 systems start to become common too. 8( > >What does the cycle counter do in a HLT'ed CPU? count. -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." "ttyv0" -- What UNIX calls a $20K state-of-the-art, 3D, hi-res color terminal To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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