From owner-freebsd-stable Tue Mar 13 3:58: 8 2001 Delivered-To: freebsd-stable@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id 3F19037B71D; Tue, 13 Mar 2001 03:58:03 -0800 (PST) (envelope-from bright@fw.wintelcom.net) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id f2DBvtD15382; Tue, 13 Mar 2001 03:57:55 -0800 (PST) Date: Tue, 13 Mar 2001 03:57:55 -0800 From: Alfred Perlstein To: Pete French Cc: Helge.Oldach@de.origin-it.com, mobile@FreeBSD.ORG, oberman@es.net, sos@freebsd.dk, stable@FreeBSD.ORG Subject: Re: Disk I/O problem in 4.3-BETA Message-ID: <20010313035755.S29888@fw.wintelcom.net> References: <20010313005811.J29888@fw.wintelcom.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from pfrench@firstcallgroup.co.uk on Tue, Mar 13, 2001 at 11:51:11AM +0000 X-all-your-base: are belong to us. Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * Pete French [010313 03:51] wrote: > All very interesting, but a small point has been forgotten > hasnt it ? The way I read this thread is that until recentlly > write-caching was enabled by default and has now been disabled (hence > the original obseravtion of disc performance dropping). > > I havent noticed that FreeBSD has a bad reputation for loss of data > in the event of am power outage, and my own experience backs this up. > As so many people appear to have been running it this way by default until > now you might have though that if it were a serious problem in reality then > people would have noticed by now ? Your optimism is appreciated, however just because you can't see the approaching hordes doesn't mean they're not at the gates. To be true to our users, we need to either: 1) turn off write caching. 2) propogate bwrite() intention down to the device layer. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] Daemon News Magazine in your snail-mail! http://magazine.daemonnews.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message