From owner-freebsd-questions Thu Jan 31 4:45:17 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mail.rz.uni-ulm.de (gemini.rz.uni-ulm.de [134.60.246.16]) by hub.freebsd.org (Postfix) with ESMTP id 4920737B400; Thu, 31 Jan 2002 04:45:08 -0800 (PST) Received: from lilith (lilith.wh-wurm.uni-ulm.de [134.60.106.64]) by mail.rz.uni-ulm.de (8.12.1/8.12.1) with SMTP id g0VCj03V002985; Thu, 31 Jan 2002 13:45:00 +0100 (MET) Message-ID: <006d01c1aa55$2697a8e0$4011a8c0@whwurm.uniulm.de> From: "Siegbert Baude" To: Cc: References: Subject: Re: Softupdates Date: Thu, 31 Jan 2002 13:45:23 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi all, > now after this discussion about softupdates let's try summing up things a > little. We're talking about a productive boxes where risk of losing > data should be minimal (but of cause the speed is also important). There > seems to be the following main conclusions: > > 1. Softupdates by themselves are not too risky; > 2. Write caching should be better turned off in this case; > 3. For the SCSI drives it can be considered enabling write caching. I just wanted to add, that there are also IDE disks with "tagged command queueing", e.g. the newer IBM disks (are there others?). But I remember vaguely a message of Soren, that it doesn't work as well, as for SCSI disks, therefore I cc'ed him to ask, if I'm wrong here and the ata version of "tagged command queueing" is as good as the SCSI one nowadays. Ciao Siegbert To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message