From owner-freebsd-hackers Mon Apr 19 0:11:27 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2]) by hub.freebsd.org (Postfix) with ESMTP id B369014FBF for ; Mon, 19 Apr 1999 00:11:25 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id AAA84280; Mon, 19 Apr 1999 00:08:59 -0700 (PDT) (envelope-from dillon) Date: Mon, 19 Apr 1999 00:08:59 -0700 (PDT) From: Matthew Dillon Message-Id: <199904190708.AAA84280@apollo.backplane.com> To: Jaye Mathisen Cc: hackers@FreeBSD.ORG Subject: Re: Anybody besides me seeing hangs/weird NFS anomalies under SMP? References: Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :If I boot a kernel w/o the second processor support, it seems to work just :fine. : :My kernel is about 4 days old, from the RELENG_3 branch. : :News via CNFS generates the problem relatively trivially (within 24-36 :hours). Running uniprocessor on the same hardware has not hung yet I :believe. : :Anyway, I know Matt's been a busy little beaver over in -current, I was :just curious if there were any obvious fixes for -stable... : :Thanks. If you have the kernel configured for DDB you should be able to break into it with ctl-alt-esc and do two things. First, a 'trace' ( just in case the current process is in a tight supervisor loop ), then a 'ps' to see what various processes are blocked on. That might give us enough info to narrow the problem down a bit. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message