Date: Mon, 26 Aug 1996 10:07:48 -0500 (CDT) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: michael@memra.com (Michael Dillon) Cc: freebsd-isp@FreeBSD.org, craigs@OS.COM Subject: Re: Anyone using ccd (FreeBSD disk striper) for news Message-ID: <199608261507.KAA00291@brasil.moneng.mei.com> In-Reply-To: <Pine.BSI.3.93.960822160048.14970N-100000@sidhe.memra.com> from "Michael Dillon" at Aug 22, 96 04:03:27 pm
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> 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? Perhaps more importantly, *reads*. > And did you need to fo that tweak to UFS meta data updates that makes it > more like Linux's ext2fs? I've played with metadata updates before (disabled ATIME and MTIME updates) but I don't want to do it on a production system until there is an officially sanctioned method to do so. ... JG
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