From owner-freebsd-performance@FreeBSD.ORG Tue May 15 13:55:54 2007 Return-Path: X-Original-To: freebsd-performance@freebsd.org Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E722116A40B for ; Tue, 15 May 2007 13:55:54 +0000 (UTC) (envelope-from schulra@earlham.edu) Received: from sipala.earlham.edu (sipala.earlham.edu [159.28.1.75]) by mx1.freebsd.org (Postfix) with ESMTP id B920F13C447 for ; Tue, 15 May 2007 13:55:54 +0000 (UTC) (envelope-from schulra@earlham.edu) Received: from tdream.lly.earlham.edu (tdream.lly.earlham.edu [159.28.7.241]) by sipala.earlham.edu (8.13.6/8.13.6) with ESMTP id l4FDtsEM025240; Tue, 15 May 2007 09:55:54 -0400 (EDT) Date: Tue, 15 May 2007 09:57:13 -0400 (EDT) From: Randy Schultz X-X-Sender: schulra@tdream.lly.earlham.edu To: Kevin Kobb In-Reply-To: <4649A71C.4030302@skylinecorp.com> Message-ID: References: <464474F0.3040306@tomjudge.com> <7579f7fb0705110735h1a65ef7atcab00bdbc25224d6@mail.gmail.com> <4649A71C.4030302@skylinecorp.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: freebsd-performance@freebsd.org Subject: PERC5i throughput [was: possible issues with Dell/Perc5 raid] X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 May 2007 13:55:55 -0000 On Tue, 15 May 2007, Kevin Kobb spaketh thusly: -}These reports on poor performance using mpt seem to be on SATA -}drives. Has anybody been seeing this using SAS drives? -} -}We are testing Dell PE840s with hot swap SAS drives, and seem to get decent -}performance, though I haven't run any benchmarks yet. Any opinions if the -}PERC5i/mfi is a better choice than the SAS5iR/mpt combination? Would it be possible for you to install blogbench and give it a quick run while your system is idle? We will be ordering a new box in 1-2 months that we need high disk I/O capabilities. We've been looking at the PERC5i set up RAID 5 with 4-6 SAS drives. I'ld be interested in what you're seeing for throughput on the PERC5i. -- Randy (schulra@earlham.edu) 765.983.1283 <*> Rain puts a hole in stone because of its constancy, not its force. - H. Joseph Gerber