From owner-freebsd-current@FreeBSD.ORG Sat Aug 6 08:21:35 2005 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 02BB316A41F for ; Sat, 6 Aug 2005 08:21:35 +0000 (GMT) (envelope-from martin@gneto.com) Received: from mxfep01.bredband.com (mxfep01.bredband.com [195.54.107.70]) by mx1.FreeBSD.org (Postfix) with ESMTP id D327A43D48 for ; Sat, 6 Aug 2005 08:21:33 +0000 (GMT) (envelope-from martin@gneto.com) Received: from as6-1-5.kr.m.bonet.se ([83.227.181.30] [83.227.181.30]) by mxfep01.bredband.com with ESMTP id <20050806082132.QDKJ11632.mxfep01.bredband.com@as6-1-5.kr.m.bonet.se>; Sat, 6 Aug 2005 10:21:32 +0200 Received: from [192.168.10.11] (euklides.gneto.com [192.168.10.11]) by as6-1-5.kr.m.bonet.se (Postfix) with ESMTP id 64571678B9; Sat, 6 Aug 2005 10:21:32 +0200 (CEST) Message-ID: <42F4730C.6040204@gneto.com> Date: Sat, 06 Aug 2005 10:21:32 +0200 From: Martin Nilsson User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050724) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Julian Elischer References: <42F45923.2080401@gneto.com> <42F4659F.5030407@gneto.com> <42F46942.7030005@elischer.org> In-Reply-To: <42F46942.7030005@elischer.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org Subject: Re: Something is very wrong with disk caching in 7.0 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: Sat, 06 Aug 2005 08:21:35 -0000 Julian Elischer wrote: > Martin Nilsson wrote: > >> Martin Nilsson wrote: >> >> > >> > This can't be rigt, why are active processes swapped out just to use >> > the memory for caching a file that is written to once! The box have >> > 2.5GB memory, it should be plenty for this! >> >> >> >> Some serching reveals that this is the same bug as Julian found 07/28. >> Re: VFS/VM over-runs. Was: Apparent strange disk behaviour in 6.0 > > > there is a patch that helps with this problem in testing, It helps > in teh case where there is just 1 huge file pushing everything else out > but if there is another problem that affects the system when there > are multiple files doing IO then in may not help.. > It is not clear whether you experience the problem with 1 single > file or with many small files being written to. My problems are with one big file, the database in the first test is mostly one big table with 20 million rows. In the second test the big 10GB ibdata file is what causes it. > >> >> Who is working on this? It should be put on the TODO for 6.0 so it's >> not lost. >> >> /Martin >> >> _______________________________________________ >> freebsd-current@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-current >> To unsubscribe, send any mail to >> "freebsd-current-unsubscribe@freebsd.org" > >