Date: Tue, 13 Apr 1999 18:55:16 +0100 From: Tony Finch <dot@dotat.at> To: hackers@freebsd.org Subject: Re: 'alternate system clock has died!' message from systat under 3.1-REL & STABLE with SMP Message-ID: <E10X7P2-00036B-00@fanf.noc.demon.net> In-Reply-To: <E10X3zx-0002t8-00@fanf.noc.demon.net> References: <19990412190816.O23025@globix.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Tony Finch <dot@dotat.at> wrote: >Marko Bukvic <marko@globix.net> wrote: >> >>I've got a new Asus XG-DLS dual Xeon motherboard with two Pentium II 450MHz Xeon >>procs and if I compile in SMP support I get the following problem: >> >>After bootup, if I start top and set the delay seconds (s) to 0(zero) the cpu >>load for the top process goes all the way up, and then after a little while it >>goes all the way down and everything has the same cpu utilization of 0.00%. >> >>Then if I start systat vmstat 1, it says: >> >> The alternate system clock has died! >> Reverting to ``pigs'' display. > >We have also seen this on an Asus P2B-DS (440BX chip set) with dual >PII 450MHz (not Xeon). The problem doesn't occur with 400MHz >processors. As a guess we tried compiling a kernel with >BETTER_CLOCK_DIAGNOSTIC but we didn't get any additional diagnostics. A suggestion from Tor Egge seems to have solved the problem (although he says it's a kludge that doesn't solve it properly). We added the contents of rtcintr() to the start of clkintr() in /sys/i386/isa/clock.c. Tony. -- f.a.n.finch dot@dotat.at fanf@demon.net Arthur: "Oh, that sounds better, have you worked out the controls?" Ford: "No, we just stopped playing with them." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E10X7P2-00036B-00>