From owner-freebsd-current Sun Aug 24 23:19:36 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id XAA22370 for current-outgoing; Sun, 24 Aug 1997 23:19:36 -0700 (PDT) Received: from news1.gtn.com (news1.gtn.com [194.77.0.15]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id XAA22330; Sun, 24 Aug 1997 23:18:40 -0700 (PDT) Received: (from uucp@localhost) by news1.gtn.com (8.8.6/8.8.6) with UUCP id IAA21459; Mon, 25 Aug 1997 08:15:09 +0200 (MET DST) Received: (from andreas@localhost) by klemm.gtn.com (8.8.7/8.8.7) id IAA10269; Mon, 25 Aug 1997 08:05:19 +0200 (CEST) Message-ID: <19970825080518.27259@klemm.gtn.com> Date: Mon, 25 Aug 1997 08:05:18 +0200 From: Andreas Klemm To: Steve Passe , "John S. Dyson" Cc: peter@FreeBSD.org, roberto@keltia.freenix.fr, current@FreeBSD.org Subject: Re: SMP seem to introduce some strange things... References: <19970824221429.06046@klemm.gtn.com> <199708242054.OAA13395@Ilsa.StevesCafe.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.79 In-Reply-To: <199708242054.OAA13395@Ilsa.StevesCafe.com>; from Steve Passe on Sun, Aug 24, 1997 at 02:54:39PM -0600 X-Disclaimer: A free society is one where it is safe to be unpopular X-Operating-System: FreeBSD 3.0-CURRENT SMP Sender: owner-freebsd-current@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > Steve: > I suspect you are getting hit by a variation of this. Even if you've supped > the code that fixes the problem (file truncation), it may have hosed 1 or > more of your control files causing you continuing problems. First cvsup > current, then examine the printcap control files for problems if new > src doesn't fix things. If all else fails, a make world might be in order... > > -- > Steve Passe | powered by > smp@csn.net | Symmetric MultiProcessor FreeBSD > On Sun, Aug 24, 1997 at 04:26:09PM -0500, John S. Dyson wrote: > The bug that I caused in the VFS code was kind-of non-deterministic (or > seemed so.) The problems with file truncation were not the SMP code, > even though timing issues might make the problem worse. > > We still have a problem with the VFS layer (I haven't manifested it yet.) I > am doing a careful code review, and found some places in the filesystem code > where there are some dependencies on the v_usecount field of the vnode, and > I think the current problem that I caused is somewhere around there. Thanks ! Ok, I'll cvsup and do a make world and report you the results this evening or tomorrow (my isdn line is out of order, cvsup via modem is more expensive...) Andreas /// -- Andreas Klemm | klemm.gtn.com - powered by Symmetric MultiProcessor FreeBSD http://www.freebsd.org/~fsmp/SMP/SMP.html http://www.freebsd.org/~fsmp/SMP/benches.html