From owner-freebsd-current@FreeBSD.ORG Fri Sep 10 23:14:18 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 74E0416A4CE; Fri, 10 Sep 2004 23:14:18 +0000 (GMT) Received: from mail.efacilitas.de (efacilitas.de [213.133.110.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0495C43D45; Fri, 10 Sep 2004 23:14:18 +0000 (GMT) (envelope-from bkoenig@cs.tu-berlin.de) Received: from hoppel.local (port-212-202-38-171.dynamic.qsc.de [212.202.38.171]) by mail.efacilitas.de (Postfix) with ESMTP id 3FAD3123961; Sat, 11 Sep 2004 00:45:52 +0200 (CEST) Received: from alpha (unknown [192.168.1.2]) by hoppel.local (Postfix) with ESMTP id 9B70D631D; Sat, 11 Sep 2004 00:46:42 +0200 (CEST) From: "Bjoern Koenig" To: Date: Sat, 11 Sep 2004 00:48:05 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook, Build 11.0.6353 Thread-Index: AcSXiDxHpahpN9UFQ064VGM6hWtwww== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Message-Id: <20040910224642.9B70D631D@hoppel.local> X-Mailman-Approved-At: Sat, 11 Sep 2004 14:47:09 +0000 cc: sos@freebsd.org cc: sos@deepcore.dk Subject: profiling data of lacking ICH2 (was: poor ATA disk speed with ICH2) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Sep 2004 23:14:18 -0000 Hello again, I built a recent GENERIC kernel (1.413.2.2 2004/09/09 23:10:48 scottl) = with high resolution kernel profiling (config -pp). I ran a little shell = script in single-user mode which looks like [...] kgmon -rB dd if=3D/dev/zero of=3D/usr/out bs=3D4096 count=3D262144 kgmon -hpr [...] and created the following output with gprof: =20 http://www.alpha-tierchen.de/dateien/gprof.out.txt (I'm sorry for posting this external link, but I didn't like to append ~15000 lines to this mail ;-) This is my dmesg: http://www.alpha-tierchen.de/dateien/dmesg.txt hw.ata.wc=3D1 hw.ata.ata_dma=3D1 The dd command told ~15 MB/s without profiling (~500 kB/s with = profiling). There is absolutely no failure with the hard disk and the controller, because after that I installed a 4.10-RELEASE into the same slice and it works pretty fine (~37 MB/s). I repeated this test at another position = on hard disk _completely_ ... and as expected I got similar results. I hope the profiling data helps. I would like to see a gprof output of a system which works correctly, otherwise I have no possibility to = compare. I have the time and motivation to analyse them and point out the = difference. best regards Bj=F6rn K=F6nig