From owner-freebsd-current@FreeBSD.ORG Wed Apr 21 10:38:04 2004 Return-Path: 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 665B116A4CE for ; Wed, 21 Apr 2004 10:38:04 -0700 (PDT) Received: from doriath.saers.com (doriath.religion.no [193.156.192.198]) by mx1.FreeBSD.org (Postfix) with ESMTP id 00ABC43D53 for ; Wed, 21 Apr 2004 10:38:04 -0700 (PDT) (envelope-from niklasmls@saers.com) Received: by doriath.saers.com (Postfix, from userid 1001) id 3D0E248ED; Wed, 21 Apr 2004 19:38:02 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by doriath.saers.com (Postfix) with ESMTP id 23E19484A for ; Wed, 21 Apr 2004 19:38:02 +0200 (CEST) Date: Wed, 21 Apr 2004 19:38:01 +0200 (CEST) From: Niklas Saers To: freebsd-current@freebsd.org Message-ID: <20040421192755.P71579@doriath.saers.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: Userland hangs on overloaded server X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Wed, 21 Apr 2004 17:38:04 -0000 Hi all, a server I run at work (a small ISP) has about 350 jails, one for each customer. It runs a webserver of the customers choice and configuration, contains all his data, and is a full FreeBSD default environment plus a few apps like favorite editors and such. Due to a few problems we had with 5.2, we decided to take the server up to CURRENT until 5.3. The following problem has been from we installed the CURRENT of March 30th to and including yesterday's source. After having been running for a while, userland stops responding. All the running daemons, webservers and inetd keep running. When I enter by SSH, sshd will accept the connection and show motd, but then it will not give me a shell, but simply hang. If this happens while I'm editing a file, I can save my file fine and exit to the shell and get a prompt, but if I press enter or type any command, it will not return until I've rebooted. Does anyone have a suggestion of what may be going on? The logs tell me nothing, so I haven't been running out of swap or anything similar. For those interested, it's a dual Athlon MP (can't remember the exact speed) with 2GB RAM. Cheers Nik