Date: Tue, 21 Sep 1999 01:38:25 +1000 (EST) From: Bruce Evans <bde@zeta.org.au> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Michael Reifenberger <root@nihil.plaut.de>, Warner Losh <imp@village.org>, Andrzej Bialecki <abial@webgiro.com>, "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net>, Matthew Dillon <dillon@apollo.backplane.com>, N <niels@bakker.net>, current@FreeBSD.ORG Subject: Re: 2xPIIIx450 results & NFS results Message-ID: <Pine.BSF.4.10.9909210129440.47163-100000@alphplex.bde.org> In-Reply-To: <12842.937688435@critter.freebsd.dk>
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> I remember this one too. I think the problem is that we fail to
> service the RTC intr for some reason. This patch was only a
> workaround, and received a verbal broadside from Bruce if I
> remember right.
>
> Maybe it should be added under a sysctl until a better solution
> is know.
>
> --- clock.c Sat Sep 18 22:41:40 1999
> +++ clock.c.new Sun Sep 5 13:21:35 1999
> @@ -203,4 +203,6 @@
> clkintr(struct clockframe frame)
> {
> + while (rtcin(RTC_INTR) & RTCIR_PERIOD)
> + statclock(&frame);
> if (timecounter->tc_get_timecount == i8254_get_timecount) {
> disable_intr();
Use a watchdog timeout like you should for any device that may hang.
Don't waste time running it every clock tick.
ISTR that we thought that the bug might be caused by a bug in unwanted
SMI interrupt handling.
Bruce
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