Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 3 Nov 2001 06:20:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 3 Nov 2001 06:19:58 -0500 Received: from mail009.syd.optusnet.com.au ([203.2.75.170]:37263 "EHLO mail009.syd.optusnet.com.au") by vger.kernel.org with ESMTP id ; Sat, 3 Nov 2001 06:19:54 -0500 Message-Id: <200111031119.fA3BJoJ10824@mail009.syd.optusnet.com.au> Content-Type: text/plain; charset=US-ASCII From: Nero To: linux-kernel@vger.kernel.org Subject: mb/s oddness between linus kernel & ac Date: Sat, 3 Nov 2001 22:18:44 +1100 X-Mailer: KMail [version 1.3.2] MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org [sorry if this was sent twice] Hi, I recently tried out both kernels to see the difference between hdparm -t tests, and the results are disturbing. Both kernels are configured the same, heres the results: Linus kernel 2.4.14pre4: /dev/hda: Timing buffered disk reads: 64 MB in 1.59 seconds = 40.25 MB/sec AC kernel 2.4.13ac5: /dev/hda: Timing buffered disk reads: 64 MB in 2.47 seconds = 25.91 MB/sec I checked that both had the same settings [with hdparm -v /dev/hda] The hdd is a seagate 60gig 7200rpm ide, & chipset is via kt133a If more hardware info is needed, let me know. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/