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Date:      Thu, 22 Aug 1996 16:03:27 -0700 (PDT)
From:      Michael Dillon <michael@memra.com>
To:        freebsd-isp@FreeBSD.org
Cc:        craigs@OS.COM
Subject:   Re: Anyone using ccd (FreeBSD disk striper) for news
Message-ID:  <Pine.BSI.3.93.960822160048.14970N-100000@sidhe.memra.com>
In-Reply-To: <199608222150.QAA25222@brasil.moneng.mei.com>

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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?

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




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