From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263621AbTDTQHD (ORCPT ); Sun, 20 Apr 2003 12:07:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263623AbTDTQHD (ORCPT ); Sun, 20 Apr 2003 12:07:03 -0400 Received: from mail.ithnet.com ([217.64.64.8]:25871 "HELO heather.ithnet.com") by vger.kernel.org with SMTP id S263621AbTDTQHC (ORCPT ); Sun, 20 Apr 2003 12:07:02 -0400 Date: Sun, 20 Apr 2003 18:18:12 +0200 From: Stephan von Krawczynski To: Alan Cox Cc: kai@tp1.ruhr-uni-bochum.de, linux-kernel@vger.kernel.org Subject: Re: ISDN massive packet drops while DVD burn/verify Message-Id: <20030420181812.44844175.skraw@ithnet.com> In-Reply-To: <1050789691.3955.17.camel@dhcp22.swansea.linux.org.uk> References: <20030416151221.71d099ba.skraw@ithnet.com> <20030419193848.0811bd90.skraw@ithnet.com> <1050789691.3955.17.camel@dhcp22.swansea.linux.org.uk> Organization: ith Kommunikationstechnik GmbH X-Mailer: Sylpheed version 0.8.11 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 19 Apr 2003 23:01:32 +0100 Alan Cox wrote: > On Sad, 2003-04-19 at 18:38, Stephan von Krawczynski wrote: > > I don't buy that explanation. Reason is simple: during this all network > > connections work flawlessly, and they do have quite a lot of interrupts > > compared to ISDN. ISDN is so slow and has so few interrupts that it is > > quite unlikely in a SMP-beyond-GHz-limit box that you loose some. The > > ancient hardware days are long gone ... > > I'd suggest buying his explanation, because he's right. You are > confusing quantity and latency. Sorry Alan, "been there, done that" I made ISDN work on just about anything that you would call an OS on sometimes quite ancient hardware (compared to nowadays), and I really cannot imagine that the combined (though sometimes confusing) efforts of you, Andre, Pavel, name-one on IDE made a dual 1.4 GHz PIII slower (responding) than a M68k 7,14 MHz with a polling IDE interface - which happens to be the slowest thing I ever did ISDN programming on _flawlessly_. Regards, Stephan