From owner-freebsd-performance@FreeBSD.ORG Wed Jun 18 15:58:33 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 88DD037B401 for ; Wed, 18 Jun 2003 15:58:33 -0700 (PDT) Received: from pop016.verizon.net (pop016pub.verizon.net [206.46.170.173]) by mx1.FreeBSD.org (Postfix) with ESMTP id 97B9043FA3 for ; Wed, 18 Jun 2003 15:58:32 -0700 (PDT) (envelope-from cswiger@mac.com) Received: from mac.com ([141.149.47.46]) by pop016.verizon.net (InterMail vM.5.01.05.33 201-253-122-126-133-20030313) with ESMTP id <20030618225831.DXYF3199.pop016.verizon.net@mac.com> for ; Wed, 18 Jun 2003 17:58:31 -0500 Message-ID: <3EF0EE8D.8040806@mac.com> Date: Wed, 18 Jun 2003 18:58:21 -0400 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030529 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-performance@freebsd.org References: <20030614190033.7F0DE37B407@hub.freebsd.org> <20030615091254.M85497@bluhayz.org> <3EF0B507.2B1B6FDF@lbl.gov> <002101c335d9$f6664a20$812a40c1@PETEX31> <3EF0EABC.E9D75759@lbl.gov> In-Reply-To: <3EF0EABC.E9D75759@lbl.gov> X-Enigmail-Version: 0.76.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Authentication-Info: Submitted using SMTP AUTH at pop016.verizon.net from [141.149.47.46] at Wed, 18 Jun 2003 17:58:31 -0500 Subject: Re: freebsd-performance Digest, Vol 4, Issue 7 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Jun 2003 22:58:33 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jin Guojun [DSD] wrote: [ ... ] > But this seems to have different problem. At least write to RAID 1 requires > twice bus bandwidth for soft RAID 1. So, read should be faster than write. > But current read is 67 MB/s, write is 10 MB/s. Something is not working. What is the write performance to a bare hard drive? I'd expect your write performance to be somewhat higher, true, but your drives read at 33 MB/s, and write at 15 MB/s, your write performance is nominal. - -- - -Chuck -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQE+8O6WHNGCD1IY6vURAjZQAKCG+1TwOtFEHbn4wwU0gWuLLx7RAwCgoEWQ ORk/bmwaFAuncBZlffJ49F4= =6i0F -----END PGP SIGNATURE-----