From: Pavel Machek Subject: Re: poor sata performance on 2.6 Date: Thu, 15 Apr 2004 21:50:53 +0200 Sender: linux-ide-owner@vger.kernel.org Message-ID: <20040415195053.GP468@openzaurus.ucw.cz> References: <200404150236.05894.kos@supportwizard.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from atrey.karlin.mff.cuni.cz ([195.113.31.123]:50822 "EHLO atrey.karlin.mff.cuni.cz") by vger.kernel.org with ESMTP id S263151AbUDOUjU (ORCPT ); Thu, 15 Apr 2004 16:39:20 -0400 Content-Disposition: inline In-Reply-To: <200404150236.05894.kos@supportwizard.com> List-Id: linux-ide@vger.kernel.org To: Konstantin Sobolev Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Hi! > I recently got a new sata disk and must say that it's performace is totally > unacceptable, on both siimage and sata_sil drivers. DMA is turned on. ... > /dev/hde: > Timing buffer-cache reads: 1436 MB in 2.00 seconds = 717.03 MB/sec > Timing buffered disk reads: 100 MB in 3.03 seconds = 32.95 MB/sec 33MB/sec "totally unacceptable"? Wow. > * Did you receive a proper socialist education? Only half of it ;-) -- 64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms