From owner-freebsd-hackers Mon May 28 9:31:27 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from a.mx.everquick.net (a.mx.everquick.net [216.89.137.3]) by hub.freebsd.org (Postfix) with ESMTP id AFC4A37B422 for ; Mon, 28 May 2001 09:31:23 -0700 (PDT) (envelope-from eddy+public+spam@noc.everquick.net) Received: from localhost (eddy@localhost) by a.mx.everquick.net (8.10.2/8.10.2) with ESMTP id f4SGVHu05428 for ; Mon, 28 May 2001 16:31:17 GMT X-EverQuick-No-Abuse: Report any e-mail abuse to Date: Mon, 28 May 2001 16:31:17 +0000 (GMT) From: "E.B. Dreger" To: hackers@freebsd.org Subject: brainstorm: "intermediate" disk caching Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Greetings all, I just had a brainstorm... I was thinking about database servers with several spindles in a RAID 5 array. Write performance is inherently disappointing -- which may or may not be an issue. Would it be worth the trouble to design an "intermediate" cache, whereby data are quickly written to a spool disk, then to the final destination? Sort of like softwares that cache CDROMs on HDD... My gut feel is that this would be more trouble than it's worth, would not net any overall performance*reliability (expressed as a product) gain, and that one might actually realize a p*r decrease. Comments, flames, larts, and funny stares appreciated. Eddy --------------------------------------------------------------------------- Brotsman & Dreger, Inc. EverQuick Internet Division Phone: (316) 794-8922 --------------------------------------------------------------------------- Date: Mon, 21 May 2001 11:23:58 +0000 (GMT) From: A Trap To: blacklist@brics.com Subject: Please ignore this portion of my mail signature. These last few lines are a trap for address-harvesting spambots. Do NOT send mail to , or you are likely to be blocked. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message