From owner-freebsd-isp Thu Aug 29 15:46:10 1996 Return-Path: owner-isp Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id PAA13024 for isp-outgoing; Thu, 29 Aug 1996 15:46:10 -0700 (PDT) Received: from sasami.jurai.net (root@sasami.jurai.net [206.151.208.162]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id PAA13014 for ; Thu, 29 Aug 1996 15:46:06 -0700 (PDT) Received: from localhost (winter@localhost) by sasami.jurai.net (8.7.5/8.7.3) with SMTP id RAA08337; Thu, 29 Aug 1996 17:44:59 -0500 (CDT) Date: Thu, 29 Aug 1996 17:44:58 -0500 (CDT) From: "Matthew N. Dodd" To: Joe Greco cc: Tony Kimball , freebsd-isp@FreeBSD.org Subject: Re: Anyone using ccd (FreeBSD disk striper) for news In-Reply-To: <199608261741.MAA00675@brasil.moneng.mei.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-isp@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk On Mon, 26 Aug 1996, Joe Greco wrote: > Sometimes you do not CARE when someone last read a file. It costs lots and > lots of disk bandwidth to write that information back on a busy news server > where thousands of files are accessed during every 30 second interval. > > If you do not have to write that information, you now have more disk > bandwidth with which to READ more data, which is what you really wanna > do. Clayton O'Neill fixed Linux to not update ATIMEs for use on his newsserver and he did get some noticeable performance improvements. Nowhere near the improvements he got when he went RAID via DPT, but still, it was worth it. I think he even had a mount time flag that would allow per fs ATIME updates. (ie: mount -o noatime) I've not really looked at doing this yet but it didn't look very straight forward. Have a good one. | Matthew N. Dodd | winter@jurai.net | http://www.jurai.net/~winter | | Technical Manager | mdodd@intersurf.net | http://www.intersurf.net | | InterSurf Online | "Welcome to the net Sir, would you like a handbasket?"|