From owner-freebsd-isp Thu Aug 22 19:01:18 1996 Return-Path: owner-isp Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id TAA19742 for isp-outgoing; Thu, 22 Aug 1996 19:01:18 -0700 (PDT) Received: from pinky.junction.net (pinky.junction.net [199.166.227.12]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id TAA19732 for ; Thu, 22 Aug 1996 19:01:15 -0700 (PDT) Received: from sidhe.memra.com (sidhe.memra.com [199.166.227.105]) by pinky.junction.net (8.6.12/8.6.12) with ESMTP id PAA15871; Thu, 22 Aug 1996 15:19:18 -0700 Received: from localhost (michael@localhost) by sidhe.memra.com (8.6.12/8.6.12) with SMTP id QAA17501; Thu, 22 Aug 1996 16:03:28 -0700 Date: Thu, 22 Aug 1996 16:03:27 -0700 (PDT) From: Michael Dillon To: freebsd-isp@FreeBSD.org cc: craigs@OS.COM Subject: Re: Anyone using ccd (FreeBSD disk striper) for news In-Reply-To: <199608222150.QAA25222@brasil.moneng.mei.com> Message-ID: Organization: Memra Software Inc. - Internet consulting MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-isp@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk On Thu, 22 Aug 1996, Joe Greco wrote: > Use a large stripe size. I use 1 cylinder group. You are not striping for > bandwidth. You are striping for CONCURRENCY. You _want_ one mechanism to > be able to handle an _entire_ file access on its own. By concurrency do you mean that the write requests are non-blocking and thus a request that lands on a second drive can start writing before a previous request completes? And did you need to fo that tweak to UFS meta data updates that makes it more like Linux's ext2fs? Michael Dillon - ISP & Internet Consulting Memra Software Inc. - Fax: +1-604-546-3049 http://www.memra.com - E-mail: michael@memra.com