From owner-freebsd-hackers Thu Mar 5 02:04:32 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA16515 for freebsd-hackers-outgoing; Thu, 5 Mar 1998 02:04:32 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from bsd.synx.com (rt.synx.com [194.167.81.239]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id CAA16360 for ; Thu, 5 Mar 1998 02:03:54 -0800 (PST) (envelope-from remy@synx.com) Received: from s3.synx.com (s3 [192.1.1.247]) by bsd.synx.com (8.6.12/8.6.12) with SMTP id LAA29902; Thu, 5 Mar 1998 11:08:37 +0100 Received: from rs1 by s3.synx.com id aa04800; 5 Mar 98 10:54 GMT Date: Thu, 5 Mar 1998 09:53:10 -0100 (GMT) From: Remy NONNENMACHER To: Terry Lambert cc: tlambert@primenet.com, hackers@FreeBSD.ORG Subject: Re: Disk write caches In-Reply-To: <199803042312.QAA17919@usr01.primenet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 4 Mar 1998, Terry Lambert wrote: > > > I would be very interested to see what the benchmarks on a machine > > > with soft updates would be with a disk with and without write > > > cacheing. > > > > I tested cache benefits within disks. Write cache disabling lowered the > > perfs from 2 to 10 time depending on operations. > > Did this include soft updates, however? > No. It was using 3.0 from December (25). How does soft update compares with async mounts ? Will the driver immediatly responding 'OK' for each write have no more interest with soft update ? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message