From owner-freebsd-current@FreeBSD.ORG Tue Mar 17 10:10:23 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4CAF1106566C; Tue, 17 Mar 2009 10:10:23 +0000 (UTC) (envelope-from rb@gid.co.uk) Received: from mx0.gid.co.uk (mx0.gid.co.uk [194.32.164.250]) by mx1.freebsd.org (Postfix) with ESMTP id D8D428FC1B; Tue, 17 Mar 2009 10:10:22 +0000 (UTC) (envelope-from rb@gid.co.uk) Received: from gidgate.gid.co.uk (80-46-130-69.static.dsl.as9105.com [80.46.130.69]) by mx0.gid.co.uk (8.14.2/8.14.2) with ESMTP id n2H9uDYY049772; Tue, 17 Mar 2009 09:56:13 GMT (envelope-from rb@gid.co.uk) Received: from [192.168.255.1] (seagoon.gid.co.uk [194.32.164.1]) by gidgate.gid.co.uk (8.13.8/8.13.8) with ESMTP id n2H9u8ur007752; Tue, 17 Mar 2009 09:56:08 GMT (envelope-from rb@gid.co.uk) Message-Id: From: Bob Bishop To: Ivan Voras In-Reply-To: Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v930.3) Date: Tue, 17 Mar 2009 09:56:08 +0000 References: X-Mailer: Apple Mail (2.930.3) Cc: freebsd-current@freebsd.org Subject: Re: A trio of problems 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: Tue, 17 Mar 2009 10:10:23 -0000 Hi, On 16 Mar 2009, at 23:28, Ivan Voras wrote: > 1. I'm trying to start 1000 jails for demonstration purposes (a > presentation), but I can reliably panic the kernel when somewhere > between 400 and 600 jails are started. [etc] On 17 Mar 2009, at 01:37, Ivan Voras wrote: > ZFS doesn't influence it - the same problem happens without ZFS on the > system (though I can create a few hundred more jails without ZFS > before > the kernel panics...). In which case, given how memory-hungry ZFS is, it looks like your problem is with exhausting some memory resource. -- Bob Bishop rb@gid.co.uk