From owner-freebsd-stable@FreeBSD.ORG Thu Oct 5 21:22:20 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 49C8916A417 for ; Thu, 5 Oct 2006 21:22:20 +0000 (UTC) (envelope-from dmitry@atlantis.dp.ua) Received: from postman.atlantis.dp.ua (postman.atlantis.dp.ua [193.108.47.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7D33743D49 for ; Thu, 5 Oct 2006 21:22:19 +0000 (GMT) (envelope-from dmitry@atlantis.dp.ua) Received: from atlantis.dp.ua (localhost [127.0.0.1]) by postman.atlantis.dp.ua (8.13.1/8.13.1) with ESMTP id k95LM9cW097738; Fri, 6 Oct 2006 00:22:09 +0300 (EEST) (envelope-from dmitry@atlantis.dp.ua) Received: from localhost (dmitry@localhost) by atlantis.dp.ua (8.13.1/8.13.1/Submit) with ESMTP id k95LM9Fo097735; Fri, 6 Oct 2006 00:22:09 +0300 (EEST) (envelope-from dmitry@atlantis.dp.ua) Date: Fri, 6 Oct 2006 00:22:09 +0300 (EEST) From: Dmitry Pryanishnikov To: Karl Denninger In-Reply-To: <20061005202144.GA11105@FS.denninger.net> Message-ID: <20061006000648.S36667@atlantis.atlantis.dp.ua> References: <20061005151925.GA1156@FS.denninger.net> <20061005190822.GA15547@icarus.home.lan> <20061005202144.GA11105@FS.denninger.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-stable@freebsd.org Subject: Re: Recommendations for a serial port card you can actually BUY? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Oct 2006 21:22:20 -0000 Hello! On Thu, 5 Oct 2006, Karl Denninger wrote: > The problem that is nailing me particularly hard right now is the second one > - I have embedded control systems that I speak to over a RS-232 interface > (the devices are actually '485 on a common bus but talked to via a 232/485 > converter) and it simply does not work on 6.x using the Comtrol driver > at all. 100ms delays and the like are one thing - we're talking about > delays in characters reaching the application of one second or more, and in What makes me wonder is whether delays you're seeing have the same nature as recent watchdog timeouts on various Gbit NICs observed by many RELENG_6 users (interrupt processing scheduling problem I suspect), or they're strictly rp(4)-specific. > With FreeBSD 5.x being EOL'd this is now turning into a critical problem. > I can't in good conscience put packages out there that have been EOL'd nor > offer meaningful support on them. While 5.4 has been reasonably stable for > some time, that is now declared a "dead" release. 5.5 is similarly on that > road. The only right path forward is into the 6.x world, but I can't get > there from where I am now unless this problem can be resolved. If I were you, I'd try to prepare easy-repeatable test case so developer (or just curious and clever person) who has Comtrol Serial Port Card could recreate the problem. And no, I don't have either hardware or time available. [ Cost considerations are totally skipped cause they're irrelevant to software regressions like the one you're seeing... ] Sincerely, Dmitry -- Atlantis ISP, System Administrator e-mail: dmitry@atlantis.dp.ua nic-hdl: LYNX-RIPE