From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751195AbVHUWSA (ORCPT ); Sun, 21 Aug 2005 18:18:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751198AbVHUWR7 (ORCPT ); Sun, 21 Aug 2005 18:17:59 -0400 Received: from a.mail.sonic.net ([64.142.16.245]:64949 "EHLO a.mail.sonic.net") by vger.kernel.org with ESMTP id S1751195AbVHUWR7 (ORCPT ); Sun, 21 Aug 2005 18:17:59 -0400 Date: Sun, 21 Aug 2005 15:17:39 -0700 From: David Hinds To: "Hesse, Christian" Cc: linux-kernel@vger.kernel.org, linux-pcmcia@lists.infradead.org Subject: Re: IRQ problem with PCMCIA Message-ID: <20050821221739.GA18925@sonic.net> References: <200508212043.58331.mail@earthworm.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200508212043.58331.mail@earthworm.de> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Aug 21, 2005 at 08:43:50PM +0200, Hesse, Christian wrote: > Hello everybody, > > seems like I have a problem with PCMCIA/PCCARD. If I transfer data > to or from a CF card inserted via adapter system waits for > interrupts most of the time: Cpu(s): 21.2% us, 7.9% sy, 0.0% ni, > 0.0% id, 1.7% wa, 69.2% hi, 0.0% si This results in a very > unresponsive system and a transfer rate of up to 1MB/s (my new > camera writes with up to 10MB/s on the card...). The drivers are working correctly; the problem is with the CF flash adapter you're using. There are two kinds of CF-to-PCMCIA adapters. Some are 16-bit PCMCIA cards, which are in most cases limited to a bus throughput of ~1 MB/sec, regardless of what the CF card is capable of. There are also 32-bit CF adapter cards, that are much faster, limited only by the speed of the CF device. Here are two: http://www.delkin.com/delkin_products_adapters_cardbus.html http://www.lexarmedia.com/readers/cf32bit.html -- Dave