From owner-freebsd-current Wed Oct 29 18:07:01 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id SAA04540 for current-outgoing; Wed, 29 Oct 1997 18:07:01 -0800 (PST) (envelope-from owner-freebsd-current) Received: from sendero-ppp.i-connect.net (sendero-ppp.i-Connect.Net [206.190.143.100]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id SAA04530 for ; Wed, 29 Oct 1997 18:06:56 -0800 (PST) (envelope-from shimon@sendero-ppp.i-connect.net) Received: (qmail 1671 invoked by uid 1000); 30 Oct 1997 02:07:21 -0000 Message-ID: X-Mailer: XFMail 1.2-beta-100797 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit MIME-Version: 1.0 Date: Wed, 29 Oct 1997 18:07:21 -0800 (PST) Organization: Atlas Telecom From: Simon Shapiro To: freebsd-current@freebsd.org Subject: Are We Losing Interrupts? Sender: owner-freebsd-current@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi Y'll, I noticed a problem for about 2-3 weeks now; At times, after the fsck -p in /etc/rc, the system simply stops. The symptoms, on the DPT driver are that the card delivers an interrupt but the driver never sees it. Dropping into the kernel debugger reveals nothing. The system is in default idle. The situation can be improved by power-cycling the machines. It happens on the same machine, with the same driver, that older kernels (last I have for sure is from 24-Aug but the problem is newer than than) have absolutely no problem with. It was verified on enough hardware of sufficient veriety to exclude hardware from the equation. The reason I suspect interrupt delivery is that I can monitor, via LEDs on the DPT that the interrupt was delivered, but the interrupt routine does not get called. Normally we observe a flurry of disk activity, and network activity immediately after fsck -p is done. This is exactly where it stops. Is this a hint? How do I research it some more? (not the obvious, this I have done :-) --- Sincerely Yours, Simon Shapiro Atlas Telecom Senior Architect 14355 SW Allen Blvd., Suite 130 Beaverton OR 97005 Shimon@i-Connect.Net Voice: 503.799.2313