From owner-freebsd-questions@FreeBSD.ORG Sat Dec 10 23:34:33 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5E97D16A41F for ; Sat, 10 Dec 2005 23:34:33 +0000 (GMT) (envelope-from dkelly@HiWAAY.net) Received: from smtp.knology.net (smtp.knology.net [24.214.63.101]) by mx1.FreeBSD.org (Postfix) with SMTP id E38C943D73 for ; Sat, 10 Dec 2005 23:34:29 +0000 (GMT) (envelope-from dkelly@HiWAAY.net) Received: (qmail 3126 invoked by uid 0); 10 Dec 2005 23:34:27 -0000 Received: from user-69-73-60-132.knology.net (HELO ?10.0.0.6?) (69.73.60.132) by smtp6.knology.net with SMTP; 10 Dec 2005 23:34:27 -0000 In-Reply-To: <20051210201601.GB79654@xor.obsecurity.org> References: <20051210172500.58401.qmail@web33302.mail.mud.yahoo.com> <439B17CA.30309@thingy.apana.org.au> <20051210201601.GB79654@xor.obsecurity.org> Mime-Version: 1.0 (Apple Message framework v746.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <4FA41E1E-89C6-4687-91C7-C1A343DDCBDF@HiWAAY.net> Content-Transfer-Encoding: 7bit From: David Kelly Date: Sat, 10 Dec 2005 17:34:23 -0600 To: Kris Kennaway X-Mailer: Apple Mail (2.746.2) Cc: FreeBSD_Questions FreeBSD_Questions Subject: Re: Freebsd Theme Song X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Dec 2005 23:34:33 -0000 On Dec 10, 2005, at 2:16 PM, Kris Kennaway wrote: > But anyway, FreeBSD 6.0 is hugely superior to 5.4 and 4.11 in > filesystem performance. I have been measuring this carefully for the > past couple of months and hope to have the paper out soon. For instance in 5.4 the fastest I could write to my /usr/ partition on a simple default-partitioned UDMA100 drive was 16 MB/sec with a 2.8 GHz P4 while it was capable of reading at over 40 MB/sec. Saw RELENG_6 writing on that partition at over 40 MB/sec recently. Unscientific tests using "systat -v" and moving big files. A gvinum striped volume on two SATA150 drives routinely produces 70 MB/sec reads and writes. Its nice that FreeBSD is now close to the hardware's performance. One nit is that with such a large sustained access other small accesses are starved. Probably a scheduler issue, and I'm sure the scheduler is being worked on. -- David Kelly N4HHE, dkelly@HiWAAY.net ======================================================================== Whom computers would destroy, they must first drive mad.