From owner-freebsd-hackers@FreeBSD.ORG Wed Feb 21 11:13:45 2007 Return-Path: X-Original-To: freebsd-hackers@FreeBSD.ORG Delivered-To: freebsd-hackers@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9FBA916EFD9 for ; Wed, 21 Feb 2007 11:13:45 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (lurza.secnetix.de [83.120.8.8]) by mx1.freebsd.org (Postfix) with ESMTP id 2332E13C4AA for ; Wed, 21 Feb 2007 11:13:44 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (patmze@localhost [127.0.0.1]) by lurza.secnetix.de (8.13.4/8.13.4) with ESMTP id l1LBDbxb006860; Wed, 21 Feb 2007 12:13:42 +0100 (CET) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.13.4/8.13.1/Submit) id l1LBDbQn006859; Wed, 21 Feb 2007 12:13:37 +0100 (CET) (envelope-from olli) Date: Wed, 21 Feb 2007 12:13:37 +0100 (CET) Message-Id: <200702211113.l1LBDbQn006859@lurza.secnetix.de> From: Oliver Fromme To: freebsd-hackers@FreeBSD.ORG, peterjeremy@optushome.com.au, zbeeble@gmail.com In-Reply-To: <20070220182113.GC853@turion.vk2pj.dyndns.org> X-Newsgroups: list.freebsd-hackers User-Agent: tin/1.8.2-20060425 ("Shillay") (UNIX) (FreeBSD/4.11-STABLE (i386)) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.1.2 (lurza.secnetix.de [127.0.0.1]); Wed, 21 Feb 2007 12:13:43 +0100 (CET) Cc: Subject: Re: Fwd: Abyssmal dump cache efficiency X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-hackers@FreeBSD.ORG, peterjeremy@optushome.com.au, zbeeble@gmail.com List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Feb 2007 11:13:46 -0000 Peter Jeremy wrote: > I've found that you do get a worthwhile improvement in dump|restore > performance by introducing a large (10's of MB) fifo between them. > This helps reduce synchronisation between dump and restore (so that > dump can continue to read whilst restore is busy writing a batch of > small files and vice versa). There's a suitable port but I can't > recall the name because I wrote my own. There are several. The most popular ones are probably misc/team and misc/buffer. However, I wrote my own, too. :-) Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart Any opinions expressed in this message are personal to the author and may not necessarily reflect the opinions of secnetix GmbH & Co KG in any way. FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "What is this talk of 'release'? We do not make software 'releases'. Our software 'escapes', leaving a bloody trail of designers and quality assurance people in its wake."