From owner-freebsd-performance@FreeBSD.ORG Thu Feb 3 16:42:11 2005 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DFD6616A4CE for ; Thu, 3 Feb 2005 16:42:11 +0000 (GMT) Received: from web41205.mail.yahoo.com (web41205.mail.yahoo.com [66.218.93.38]) by mx1.FreeBSD.org (Postfix) with SMTP id 9EC5F43D49 for ; Thu, 3 Feb 2005 16:42:11 +0000 (GMT) (envelope-from arne_woerner@yahoo.com) Received: (qmail 96118 invoked by uid 60001); 3 Feb 2005 16:42:10 -0000 Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; b=fGBaAHkrKnRGHihuvpQFEcsu2Ge5No56urRAdlfn137qMT/XTZSvPri0OHMgTjlnQAQyrVplyEplMB/hLytIWyuXkxreTVzX5qwQlwjFHyGtgaTlwOLsmk7+WfwC0O37/auz0iXU8Hi0h5S7HvmUciTE7frMm4JGdyQBBCNWjnk= ; Message-ID: <20050203164210.96116.qmail@web41205.mail.yahoo.com> Received: from [83.129.195.144] by web41205.mail.yahoo.com via HTTP; Thu, 03 Feb 2005 08:42:09 PST Date: Thu, 3 Feb 2005 08:42:09 -0800 (PST) From: Arne "Wörner" To: freebsd-performance@freebsd.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Feb 2005 16:42:12 -0000 I just tested R5.1 with a time -c "dd if=/dev/zero of=a bs=64k count=1000 ; fsync a" and it was 4 or about 4 times fast than with R5.3. Is it smart to start looking for regressive changes in sys/dev/ata or in /sys/kern? I mean: Did somebody see this phaenomenon on a SCSI disc, too? -Arne __________________________________ Do you Yahoo!? The all-new My Yahoo! - What will yours do? http://my.yahoo.com