From owner-freebsd-questions@FreeBSD.ORG Fri Jun 10 14:44:53 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 7889916A41C for ; Fri, 10 Jun 2005 14:44:53 +0000 (GMT) (envelope-from scuba@centroin.com.br) Received: from gorgo.centroin.com.br (gorgo.centroin.com.br [200.225.63.128]) by mx1.FreeBSD.org (Postfix) with ESMTP id C683D43D55 for ; Fri, 10 Jun 2005 14:44:51 +0000 (GMT) (envelope-from scuba@centroin.com.br) Received: from hypselo.centroin.com.br (hypselo.centroin.com.br [200.225.63.1]) by gorgo.centroin.com.br (8.12.10/8.12.9) with ESMTP id j5AEimwq007977; Fri, 10 Jun 2005 11:44:48 -0300 (EST) Date: Fri, 10 Jun 2005 11:44:48 -0300 (EST) From: Sender: To: Dmitry Mityugov In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: freebsd-questions@freebsd.org Subject: Re: mismatch results with disk performance 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: Fri, 10 Jun 2005 14:44:53 -0000 Dmitry, =09Which is the chipset of your motherboard? =09I suspect it=B4s a problem with ICH5 drivers. =09Whith windowz OS they perform identical. - Marcelo Souza On Fri, 10 Jun 2005, Dmitry Mityugov wrote: |On 6/9/05, scuba@centroin.com.br wrote: |> Dmitry, |> |> Both situations have the same result, an Slave IDE HDD on primar= y |> controller, or a master HDD on the 2nd IDE controler, works much more |> slow, testing with 'dd'. |> I couldn't see that with diskinfo. | |I can't reproduce this. On a dual Xeon server with 2 PATA Seagate |disks attached as masters to both IDE channels and a PATA CD-ROM as a |slave on the 1st channel, reading them with dd procuces this: | |%dd if=3D/dev/ad0 of=3D/dev/null bs=3D1m count=3D20 |20+0 records in |20+0 records out |20971520 bytes transferred in 0.378772 secs (55367171 bytes/secs) |%dd if=3D/dev/ad2 of=3D/dev/null bs=3D1m count=3D20 |20+0 records in |20+0 records out |20971520 bytes transferred in 0.364243 secs (57575625 bytes/secs) | |Please let me know if there is anything else I shall try to reproduce |the problem. | |-- |Dmitry | |"We live less by imagination than despite it" - Rockwell Kent, "N by E" |_______________________________________________ |freebsd-questions@freebsd.org mailing list |http://lists.freebsd.org/mailman/listinfo/freebsd-questions |To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.or= g" | - Marcelo