Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 5 Oct 2002 15:39:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 5 Oct 2002 15:39:23 -0400 Received: from smtp-outbound.cwctv.net ([213.104.18.10]:57617 "EHLO smtp.cwctv.net") by vger.kernel.org with ESMTP id ; Sat, 5 Oct 2002 15:39:19 -0400 From: To: jbradford@dial.pipex.com, ahu@ds9a.nl, linux-kernel@vger.kernel.org, rmk@arm.linux.org.uk Date: Sat, 5 Oct 2002 20:43:14 +0100 Subject: RE: 2.5.x and 8250 UART problems MIME-Version: 1.0 X-Mailer: Liberate TVMail 2.6 Content-Type: multipart/mixed; boundary="1033846994577" Message-ID: <01d6006411905a2DTVMAIL4@smtp.cwctv.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2849 Lines: 70 --1033846994577 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Shouldn't it be fixed, it should work normally anyway. Cheers, Dean McEwan. Currently hacking KGI, which I don't understand, oh and ask me about OpenModemTalk... On Sat, 5 Oct 2002 16:18:39 +0100 (BST) jbradford@dial.pipex.com wrote: --1033846994577 Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit Content-Disposition: inline Received: from vger.kernel.org ([209.116.70.75]) by smtp.cwctv.net with Microsoft SMTPSVC(5.5.1877.447.44); Sat, 5 Oct 2002 16:10:56 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 5 Oct 2002 11:05:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 5 Oct 2002 11:05:06 -0400 Received: from 62-190-217-225.pdu.pipex.net ([62.190.217.225]:7941 "EHLO darkstar.example.net") by vger.kernel.org with ESMTP id ; Sat, 5 Oct 2002 11:05:06 -0400 Received: (from root@localhost) by darkstar.example.net (8.12.4/8.12.4) id g95FIdPr000532; Sat, 5 Oct 2002 16:18:39 +0100 From: jbradford@dial.pipex.com Message-Id: <200210051518.g95FIdPr000532@darkstar.example.net> Subject: Re: 2.5.x and 8250 UART problems To: ahu@ds9a.nl (bert hubert) Date: Sat, 5 Oct 2002 16:18:39 +0100 (BST) Cc: linux-kernel@vger.kernel.org, rmk@arm.linux.org.uk In-Reply-To: <20021005150715.GA30761@outpost.ds9a.nl> from "bert hubert" at Oct 05, 2002 05:07:15 PM X-Mailer: ELM [version 2.5 PL6] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: linux-kernel-owner+Hell.Surfers=40cwctv.net@vger.kernel.org > > I've noticed that 8250 UART based serial port performance is poorer in > > 2.5.x than 2.4.x and 2.2.x, on a couple of my machines. > > > > The 486 SX-20 with 4 MB RAM, running 2.2.21 reliably achieves about 650 > > BPS download from another machine, with the port runnnig at 9600 bps. > > With 2.5.40, many characters are lost at 9600, making, e.g. a ZModem > > transfer retry for almost every block. > > Have you tried 'hdparm -u'? Hmmm, I can do, but I thought it was a Bad Thing (tm) for ISA based controllers? I could be wrong... John. - 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/ --1033846994577-- - 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/