Date: 20 Aug 2001 09:18:25 -0700 From: Jon Noack <noackjr@compgeek.com> To: freebsd-smp@FreeBSD.org Subject: Re: Bye bye dear SMP-system Message-ID: <20010820161825.1908.cpmta@c017.sfo.cp.net>
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I have 2 machines running dual Celeron 500s on BP6s. The only problems I have come across have had to do with the HPT366 controller. I use IBM 75GXP hard drives in the machines and enabled tagged queuing (using the 'hw.ata.tags="1"' line in /boot/loader.conf). Under heavy reads (but not heavy writes - weird), the kernel would post an "ad0: READ command timeout <snip> resetting" error followed by an "ad0: invalidating queued requests" error. That was shortly followed by a hard lock. I tried 'hw.ata.wc="1"' instead and have had no problems (except if and when the UPS dies). I could reproduce the error by cvsuping my source tree to RELENG_4_3. The first time was fine, as there was some writing because several items were being updated (from 4.3-release). Later attempts (which were almost solely reads) always resulted in a hard lock. Jon On Mon, 20 August 2001, Joachim Strömbergson wrote: <snip> > So, a few questions: > (1) Is late 4.3-STABLE and 4.4-RC unstable in SMP mode? I suspect not, > > (2) How to go about catching the lock? Console doesn't show anything, > the machines simply freezes over, > > (3) Any BP6-user with similar experience that have any ideas? <snip> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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