From owner-freebsd-current@FreeBSD.ORG Mon Feb 13 15:44:50 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6AFCA16A420; Mon, 13 Feb 2006 15:44:50 +0000 (GMT) (envelope-from keramida@ceid.upatras.gr) Received: from igloo.linux.gr (igloo.linux.gr [62.1.205.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2FF2443D64; Mon, 13 Feb 2006 15:44:47 +0000 (GMT) (envelope-from keramida@ceid.upatras.gr) Received: from flame.pc (aris.bedc.ondsl.gr [62.103.39.226]) (authenticated bits=128) by igloo.linux.gr (8.13.5/8.13.5/Debian-3) with ESMTP id k1DFiMpG026945 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 13 Feb 2006 17:44:25 +0200 Received: from flame.pc (flame [127.0.0.1]) by flame.pc (8.13.4/8.13.4) with ESMTP id k1DFiF3w000966; Mon, 13 Feb 2006 17:44:15 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Received: (from keramida@localhost) by flame.pc (8.13.4/8.13.4/Submit) id k1DFiESB000965; Mon, 13 Feb 2006 17:44:14 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Date: Mon, 13 Feb 2006 17:44:14 +0200 From: Giorgos Keramidas To: Robert Watson Message-ID: <20060213154414.GA909@flame.pc> References: <20060201235556.GA708@troutmask.apl.washington.edu> <20060207104411.GA1067@flame.pc> <20060207132335.W37594@fledge.watson.org> <20060210230950.GA938@flame.pc> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060210230950.GA938@flame.pc> X-Hellug-MailScanner: Found to be clean X-Hellug-MailScanner-SpamCheck: not spam, SpamAssassin (score=-3.341, required 5, autolearn=not spam, ALL_TRUSTED -1.80, AWL 0.86, BAYES_00 -2.60, DNS_FROM_RFC_ABUSE 0.20) X-Hellug-MailScanner-From: keramida@ceid.upatras.gr Cc: freebsd-amd64@freebsd.org, freebsd-current@freebsd.org, Olivier Houchard , Steve Kargl Subject: Re: HEADSUP: New pts code triggers panics on amd64 systems. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Feb 2006 15:44:50 -0000 On 2006-02-11 01:09, Giorgos Keramidas wrote: > I'm not sure if what I see is a pts side-effect. I rebuilt a snapshot > of HEAD again today, and discovered something else that may help us > track this down. > > A few more observations, in case they prove helpful to someone more > acquainted with the way syscons output is supposed to work: > > - If I keep hitting Scroll-Lock again and again, then syscons output > *does* eventually appear. > > - If I type stuff without seeing it and then press RETURN twice, the > previous from last line *does* appear in my terminal. > > - When pressing CTRL-ALT-ESC, the debugger starts normally, but after > typing many times commands that have large output, i.e.: > > show witness > > the console locks up entirely. > > This looks like a locking problem, instead of a pts/syscons one :-/ More info available. I finally managed to run top(1) in multiuser mode with a HEAD kernel that was updated this morning, but without the 'pts' bits in kernel or userland. The console is still unusable and everything feels very sluggish. Looking at top output, when it eventually updated itself I saw 75% interrupt time and 25% idle time? Any ideas why this would happen with recent kernels? - Giorgos