From owner-freebsd-geom@FreeBSD.ORG Fri Dec 29 14:47:19 2006 Return-Path: X-Original-To: freebsd-geom@freebsd.org Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 48BDF16A403 for ; Fri, 29 Dec 2006 14:47:19 +0000 (UTC) (envelope-from arne_woerner@yahoo.com) Received: from web30304.mail.mud.yahoo.com (web30304.mail.mud.yahoo.com [209.191.69.66]) by mx1.freebsd.org (Postfix) with SMTP id EE52913C44B for ; Fri, 29 Dec 2006 14:47:18 +0000 (UTC) (envelope-from arne_woerner@yahoo.com) Received: (qmail 315 invoked by uid 60001); 29 Dec 2006 14:47:18 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=h8kHjQ5PNCdVS+xEUEViR7M7OLw57F6Xjzt6IJrXQsmWDwkcX5Q4pIyZjgpMDDQWvAem3eNu5JwquOhActkUzLDSra2sbax7YIzMZ9gwFg3S6hXTfTcpqtqUSSJmJzlVCpUpq3vnOMsnqd4TQ0xrcc7o/8iTAVn8LL12fsbWnjg=; X-YMail-OSG: d5nbDHcVM1lPA_REds_myCcJPbuZR1FfuExxeMCUYoHFOIdquJ63NWaglmgQdBFbH_SkzJGcewJQ5nPdhbfeYZgsPu1a0xE5hEFd7I_PayzyPNgIjt8FBWobWyQqszC34ejhFw_kl2rDQ_gHKxi2EeyQK2YSiSYL Received: from [85.212.8.201] by web30304.mail.mud.yahoo.com via HTTP; Fri, 29 Dec 2006 06:47:18 PST Date: Fri, 29 Dec 2006 06:47:18 -0800 (PST) From: "R. B. Riddick" To: Ivan Voras , freebsd-geom@freebsd.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Message-ID: <496105.98420.qm@web30304.mail.mud.yahoo.com> Cc: Subject: Re: gstripe performance scaling with many disks X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Dec 2006 14:47:19 -0000 --- Ivan Voras wrote: > Hmmm, it's strange - it's 2x lower than it should be. For 8 drives, each > should do 16 KB/s but they do 8 KB/s. Maybe something's chopping the > requests at 64 KB each? > Yup! It is the different test-tool: raidtest (from ports) It uses random access with various request sizes... -Arne __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com