From owner-freebsd-advocacy Tue Mar 2 18:12:10 1999 Delivered-To: freebsd-advocacy@freebsd.org Received: from smtp04.primenet.com (smtp04.primenet.com [206.165.6.134]) by hub.freebsd.org (Postfix) with ESMTP id ADB1814ED7 for ; Tue, 2 Mar 1999 18:11:14 -0800 (PST) (envelope-from tlambert@usr04.primenet.com) Received: (from daemon@localhost) by smtp04.primenet.com (8.8.8/8.8.8) id TAA26867; Tue, 2 Mar 1999 19:41:43 -0700 (MST) Received: from usr04.primenet.com(206.165.6.204) via SMTP by smtp04.primenet.com, id smtpd026821; Tue Mar 2 19:41:30 1999 Received: (from tlambert@localhost) by usr04.primenet.com (8.8.5/8.8.5) id TAA01293; Tue, 2 Mar 1999 19:10:41 -0700 (MST) From: Terry Lambert Message-Id: <199903030210.TAA01293@usr04.primenet.com> Subject: Re: The Linux PR firestorm disaster (w.r.t. FreeBSD) To: logix@foobar.franken.de (Harold Gutch) Date: Wed, 3 Mar 1999 02:10:40 +0000 (GMT) Cc: dwilde1@thuntek.net, kheuer@gwdu60.gwdg.de, freebsd-advocacy@FreeBSD.ORG In-Reply-To: <19990302184800.B4386@foobar.franken.de> from "Harold Gutch" at Mar 2, 99 06:48:00 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-advocacy@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I saw a posting by Martin Cracauer to a German BSD-newsgroup a > couple of days ago, which can be summed up to "normal synchronous > writes (the 'classic' FreeBSD thing) are slow, asynchronous > writes (what Linux does) are dangerous - softupdates are a little > slower than asynchronous writes, but ensure the reliability of > synchronous writes. > > Is there some real good comparism of all the three, like in what > case you might lose data with each of the three possibilities > (according to that posting, there's a small chance of data-loss > with synchronous writes, so I guess that it's the same for > softupdates, too) and (rough) speed-comparisms of them ? http://www.ece.cmu.edu/~ganger/papers/CSE-TR-254-95/ Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-advocacy" in the body of the message