Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756922AbXFTWtA (ORCPT ); Wed, 20 Jun 2007 18:49:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753454AbXFTWsu (ORCPT ); Wed, 20 Jun 2007 18:48:50 -0400 Received: from viefep18-int.chello.at ([213.46.255.22]:54696 "EHLO viefep15-int.chello.at" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752875AbXFTWst (ORCPT ); Wed, 20 Jun 2007 18:48:49 -0400 Date: Thu, 21 Jun 2007 00:48:47 +0200 From: Carlo Wood To: linux-kernel@vger.kernel.org Subject: SATA Harddisk speed drop of 100 MB/s Message-ID: <20070620224847.GA5488@alinoe.com> Mail-Followup-To: Carlo Wood , linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 544 Lines: 17 hdparm -tT gives over 160 MB/s for my tripple 10k rpm Raptor RAID5 on 2.6.18, as expected. In 2.6.22-rc5 this dropped to only 60 MB/s ! Is this a known issue? I also measured it with bonnie; I get 108 MB/s reading speed on 2.6.18 and only 68 MB/s on 2.6.22-rc5. -- Carlo Wood - 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/