From owner-freebsd-stable@FreeBSD.ORG Wed Aug 6 18:59:44 2008 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 153CA1065676 for ; Wed, 6 Aug 2008 18:59:44 +0000 (UTC) (envelope-from kris@FreeBSD.org) Received: from weak.local (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id BE8008FC0A; Wed, 6 Aug 2008 18:59:42 +0000 (UTC) (envelope-from kris@FreeBSD.org) Message-ID: <4899F49C.1000609@FreeBSD.org> Date: Wed, 06 Aug 2008 20:59:40 +0200 From: Kris Kennaway User-Agent: Thunderbird 2.0.0.16 (Macintosh/20080707) MIME-Version: 1.0 To: Lin Jui-Nan Eric References: <47713ee10808050839k5b258831x66bc52f70b2c355b@mail.gmail.com> <47713ee10808060013h10dd3f57ma5f45e69a322743a@mail.gmail.com> In-Reply-To: <47713ee10808060013h10dd3f57ma5f45e69a322743a@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Cc: stable@freebsd.org Subject: Re: Max size of one swap slice X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Aug 2008 18:59:44 -0000 Lin Jui-Nan Eric wrote: > On Wed, Aug 6, 2008 at 12:46 AM, Chuck Swiger wrote: >> It's hard to conceive of why you'd want to add so much swap space, anyway-- >> if you've got programs which actually need to deal with 10s of gigabytes >> worth of data, then they ought to maintain a smaller/reasonable-sized >> working set in RAM and do disk I/O as needed themselves rather than depend >> upon the VM pager, anyways. > We are running varnish, and found that it is not stable while using mmap mode. > We don't know whether if the problem is in the code of varnish or file > system, but > we found that if we run varnish using malloc mode with big swap, it > became stable. > > Thank you all for the information, I'll try to look into the kernel code. See http://www.freebsd.org/cgi/getmsg.cgi?fetch=540837+0+/usr/local/www/db/text/2008/freebsd-questions/20080706.freebsd-questions Kris