Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751652AbXBMTBH (ORCPT ); Tue, 13 Feb 2007 14:01:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751660AbXBMTBH (ORCPT ); Tue, 13 Feb 2007 14:01:07 -0500 Received: from wr-out-0506.google.com ([64.233.184.232]:22424 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751652AbXBMTBG (ORCPT ); Tue, 13 Feb 2007 14:01:06 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:x-enigmail-version:content-type:content-transfer-encoding; b=L7CJhc5QOgSEpazG6p9eA7GdvSVlMtjwSazZ6C77+GJonuFSFy6kdmzUI+bOl/h5Tl3ZSH7W80ePvJdaS3SH9frLtBtxQ3MVe6SDl58OvubyOqxHFZbYN+GN/qTZWEkO9T40kh4TqPNw2hZcU91ykyrR1uEEMb7vphF+qFnHuJQ= Message-ID: <45D20CFA.7020008@gmail.com> Date: Tue, 13 Feb 2007 11:09:46 -0800 From: Jeff Carr User-Agent: Thunderbird 1.5.0.9 (X11/20061206) MIME-Version: 1.0 To: "Martin A. Fink" CC: linux-kernel@vger.kernel.org Subject: Re: SATA-performance: Linux vs. FreeBSD References: <200702121502.17130.fink@mpe.mpg.de> <200702121737.12882.fink@mpe.mpg.de> In-Reply-To: <200702121737.12882.fink@mpe.mpg.de> X-Enigmail-Version: 0.94.2.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 750 Lines: 19 On 02/12/07 08:37, Martin A. Fink wrote: > :~> strace -c -T -o trace.out dd if=/dev/zero of=test.txt bs=10MB count=200 > > 200+0 Datens?tze ein > 200+0 Datens?tze aus > 2000000000 bytes (2,0 GB) copied, 52,8632 seconds, 37,8 MB/s You might want to check the raw write & read speed to the device without a filesystem. Also, your previous email didn't include xfs. xfs has very good sustained write performance. dd if=/dev/zero of=/dev/sdX bs=10MB count=200 dd of=/dev/null if=/dev/sdX bs=10MB count=200 - 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/