From owner-freebsd-hackers Wed Jun 9 4:45:39 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from cc1017255-a.srst1.fl.home.com (cc1017255-a.srst1.fl.home.com [24.3.122.197]) by hub.freebsd.org (Postfix) with ESMTP id 3CB5C14F5C for ; Wed, 9 Jun 1999 04:43:51 -0700 (PDT) (envelope-from hg@n2wx.ampr.org) Received: from penny.n2wx.ampr.org (penny.n2wx.ampr.org [172.16.0.5]) by cc1017255-a.srst1.fl.home.com (Postfix) with ESMTP id C75E21E53; Wed, 9 Jun 1999 07:43:46 -0400 (EDT) Received: by penny.n2wx.ampr.org (Postfix, from userid 1000) id F22ACDD; Wed, 9 Jun 1999 07:43:45 -0400 (EDT) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14174.21361.773177.526498@penny.south.mpcs.com> Date: Wed, 9 Jun 1999 07:43:45 -0400 (EDT) From: Howard Goldstein To: dyson@iquest.net Cc: freebsd-hackers@freebsd.org Subject: Re: problem for the VM gurus In-Reply-To: <199906090838.DAA65843@dyson.iquest.net.> References: <199906072257.SAA22459@bbs.mpcs.com> <199906090838.DAA65843@dyson.iquest.net.> X-Mailer: VM 6.62 under Emacs 19.34.1 Organization: disorganization Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG John S. Dyson writes: > Howard Goldstein said: > > On Mon, 7 Jun 1999 18:38:51 -0400 (EDT), Brian Feldman wrote: > > : 4.0-CURRENT > > > > 3.2R too... > > > I just checked the source (CVS) tree, and something bad happend > between 1.27 and 1.29 on ufs_readwrite.c. Unless other things > had been changed to make the problem go away, the recursive vnode > thing was broken then. I can pretty easily test patches and try other stuff out on a couple of dozen brand new, architecturally (sp) stressed out (memorywise (zero swap, 16mb RAM, mfsroot) and cpu bandwidth wise (386sx40)) 3.1-R (switchable to 3.2R) systems, if it'd be helpful. Should it bring out clues leading to the fix for 'the' golden page-not-present instability it'd be awesome karma. This very limited environment is especially fragile and highly susceptible to consistently reproducing the popular >= 3.1R page not present panics. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message