From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 28 Jan 2001 02:49:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 28 Jan 2001 02:49:00 -0500 Received: from adsl-63-195-162-81.dsl.snfc21.pacbell.net ([63.195.162.81]:46092 "EHLO master.linux-ide.org") by vger.kernel.org with ESMTP id ; Sun, 28 Jan 2001 02:48:44 -0500 Date: Sat, 27 Jan 2001 23:48:31 -0800 (PST) From: Andre Hedrick To: paradox3 cc: linux-kernel@vger.kernel.org, linux-smp@vger.kernel.org Subject: Re: Poor SCSI drive performance on SMP machine, 2.2.16 In-Reply-To: <003f01c088fb$a35c06e0$b001a8c0@caesar> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org WOOHOO, first report where I win one against the ever losing battle against SCSI....paradox3, you made my evening... Also please add to the sign on I95 exit 2... ""Welcome to Maine", 'now you can go home, now'" Caution Moose will attempt to mate with cars carrying canoes in the winter. Cheers, Andre Hedrick Linux ATA Development On Sun, 28 Jan 2001, paradox3 wrote: > I have an SMP machine (dual PII 400s) running 2.2.16 with one 10,000 RPM IBM > 10 GB SCSI drive > (AIC 7890 on motherboard, using aic7xxx.o), and four various IDE drives. The > SCSI drive > performs the worst. In tests of writing 100 MB and sync'ing, one of my IDE > drives takes 31 seconds. The SCSI drive (while doing nothing else) took > 2 minutes, 10 seconds. This is extremely noticable in file transfers that > completely > monopolize the SCSI drive, and are much slower than when involving the IDE > drives. > After a large data operation on the SCSI drive, the system will hang for > several minutes. > Anyone know what could be causing this? Thanks. > > Attached are some data to help. > > > Thanks, > Para-dox (paradox3@maine.rr.com) > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/