From owner-freebsd-stable@FreeBSD.ORG Wed Dec 12 21:58:20 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 4C1D75F2 for ; Wed, 12 Dec 2012 21:58:20 +0000 (UTC) (envelope-from dweimer@dweimer.net) Received: from webmail.dweimer.net (24-240-198-187.static.stls.mo.charter.com [24.240.198.187]) by mx1.freebsd.org (Postfix) with ESMTP id 0DBA08FC0C for ; Wed, 12 Dec 2012 21:58:19 +0000 (UTC) Received: from www.dweimer.net (webmail.dweimer.net [192.168.5.1]) by webmail.dweimer.net (8.14.5/8.14.5) with ESMTP id qBCLwCJP038682 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Wed, 12 Dec 2012 15:58:13 -0600 (CST) (envelope-from dweimer@dweimer.net) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Wed, 12 Dec 2012 15:58:12 -0600 From: dweimer To: FreeBSD Stable Subject: 9.1 system hung with top open on console, yet responsive on ssh =?UTF-8?Q?sessions=3F?= Organization: dweimer.net Mail-Reply-To: Message-ID: <17622505fce802a8359c4a37f120f9bf@dweimer.net> X-Sender: dweimer@dweimer.net User-Agent: Roundcube Webmail/0.8.1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: dweimer@dweimer.net List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Dec 2012 21:58:20 -0000 I ran into a weird one, have a 9.1 test system (virtual in VMWare Workstation 9) that I left running logged into the console with top running. The console the top process it was running appear to have hung, can't use ALT + F1,F2... to switch virtual consoles. However I can log in to the system via ssh, if you run top you get the same information on the console, can even interact with it, switching search order and the like. systat also seems to not display current information. I can do everything I have tried through the console except I noticed that syslog isn't writing data and a /etc/rc.d/syslog restart hung as well. This is just a test system running one single Java program (Ubiquiti UniFi controller software) that is responding just fine as well. Thought maybe it was disk access related, however I have confirmed that I can read and write to the disk, used dd if=/dev/random of=/.../random.out..., to each file system and was able to write to all of them. Before I reboot the system (I have a feeling it won't reboot cleanly), I was curious if anyone else has ever seen this and what I should check to possibly identify what caused the problem. -- Thanks, Dean E. Weimer http://www.dweimer.net/