From owner-freebsd-i386@FreeBSD.ORG Wed Sep 15 11:20:21 2004 Return-Path: Delivered-To: freebsd-i386@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6AC7116A4CF for ; Wed, 15 Sep 2004 11:20:21 +0000 (GMT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 41FBB43D39 for ; Wed, 15 Sep 2004 11:20:21 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.11/8.12.11) with ESMTP id i8FBKLNP011544 for ; Wed, 15 Sep 2004 11:20:21 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.11/8.12.11/Submit) id i8FBKLXh011534; Wed, 15 Sep 2004 11:20:21 GMT (envelope-from gnats) Resent-Date: Wed, 15 Sep 2004 11:20:21 GMT Resent-Message-Id: <200409151120.i8FBKLXh011534@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-i386@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Björn König Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E2DFE16A4CE for ; Wed, 15 Sep 2004 11:19:32 +0000 (GMT) Received: from www.freebsd.org (www.freebsd.org [216.136.204.117]) by mx1.FreeBSD.org (Postfix) with ESMTP id D84BC43D46 for ; Wed, 15 Sep 2004 11:19:32 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.12.11/8.12.11) with ESMTP id i8FBJWnL007355 for ; Wed, 15 Sep 2004 11:19:32 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.12.11/8.12.11/Submit) id i8FBJWZZ007354; Wed, 15 Sep 2004 11:19:32 GMT (envelope-from nobody) Message-Id: <200409151119.i8FBJWZZ007354@www.freebsd.org> Date: Wed, 15 Sep 2004 11:19:32 GMT From: Björn König To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-2.3 Subject: i386/71761: disk write operations too slow (probably DMA problems with ICH2) X-BeenThere: freebsd-i386@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: I386-specific issues for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Sep 2004 11:20:21 -0000 >Number: 71761 >Category: i386 >Synopsis: disk write operations too slow (probably DMA problems with ICH2) >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-i386 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Sep 15 11:20:20 GMT 2004 >Closed-Date: >Last-Modified: >Originator: Björn König >Release: FreeBSD 5.3-BETA4 >Organization: >Environment: FreeBSD alpha.local 5.3-BETA4 FreeBSD 5.3-BETA4 #0: Mon Sep 13 15:39:18 UTC 2004 bkoenig@hoppel.local:/usr/obj/usr/src/sys/GENERIC i386 >Description: Disk write speed since 5.3 ist too low. 37 MB/s are expected (5.2.1). I get around 13 MB/s with 5.3-BETA. atacontrol shows already UDMA100, but if I set UDMA100 explicitly again, then I get 25 MB/s; it's still too slow. It's not a hardware failure, because with 5.2.1 it still works perfectly. Mainboard is an Asus TUSL2-C (i815EP) with ICH2 controller. >How-To-Repeat: dd if=/dev/zero of= bs=4096 count=262144 writes 1G of data and shows the average throughput. >Fix: >Release-Note: >Audit-Trail: >Unformatted: