From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from pippin.tausq.org (gandalf.tausq.org [64.81.244.94]) by dsl2.external.hp.com (Postfix) with ESMTP id 2060C4943 for ; Tue, 26 Aug 2003 08:49:53 -0600 (MDT) Date: Tue, 26 Aug 2003 07:52:38 -0700 From: Randolph Chung To: "M. Grabert" Cc: parisc-linux@lists.parisc-linux.org Subject: Re: [parisc-linux] C3000 and IDE DMA support Message-ID: <20030826145238.GS21328@tausq.org> Reply-To: Randolph Chung References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: > - the hard disk performs very bad (just 3.13 MB/s instead of expected > >30 MB/s, tested with similar drive in PC and same hdparm settings) > In fact it shows typical data rates for unsupported DMA transfers You are right, DMA is not yet supported on superio... at some point it was sort of working, but not very reliably... it's a worthwhile project if you want to do some kernel hacking :-) randolph -- Randolph Chung Debian GNU/Linux Developer, hppa/ia64 ports http://www.tausq.org/