From owner-freebsd-current@FreeBSD.ORG Wed Jul 21 01:04:10 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2533616A4CE for ; Wed, 21 Jul 2004 01:04:10 +0000 (GMT) Received: from pimout3-ext.prodigy.net (pimout3-ext.prodigy.net [207.115.63.102]) by mx1.FreeBSD.org (Postfix) with ESMTP id C0D3C43D3F for ; Wed, 21 Jul 2004 01:04:09 +0000 (GMT) (envelope-from julian@elischer.org) Received: from elischer.org (adsl-68-121-219-69.dsl.snfc21.pacbell.net [68.121.219.69])i6L140lM154576; Tue, 20 Jul 2004 21:04:00 -0400 Message-ID: <40FDC0FF.30901@elischer.org> Date: Tue, 20 Jul 2004 18:03:59 -0700 From: Julian Elischer User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.4b) Gecko/20030524 X-Accept-Language: en, hu MIME-Version: 1.0 To: "Greg 'groggy' Lehey" References: <16634.47272.768935.436137@grasshopper.cs.duke.edu> <200407182039.10773.dfr@nlsystems.com> <16634.54674.966908.540880@grasshopper.cs.duke.edu> <200407182104.53221.dfr@nlsystems.com> <87hds3pfgv.wl@tora.nunu.org> <20040721003850.GD78419@wantadilla.lemis.com> In-Reply-To: <20040721003850.GD78419@wantadilla.lemis.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: simokawa@freebsd.org cc: Hidetoshi Shimokawa cc: freebsd-current@freebsd.org cc: Andrew Gallatin Subject: Re: Excellent job on the firewire support! X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Jul 2004 01:04:10 -0000 Greg 'groggy' Lehey wrote: >On Tuesday, 20 July 2004 at 11:41:52 +0900, Hidetoshi Shimokawa wrote: > > >>(sorry for resending) >> >>At Sun, 18 Jul 2004 21:04:53 +0100, >>Doug Rabson wrote: >> >> >>>>2) Is dcons usable after a panic (ie, DDB or KDB_TRACE)? Or is it >>>> only usable for remote-gdb? >>>> >>>> >>>Dcons provides two full duplex streams - one for console and one for >>>gdb. You can use DDB on the console just like normal. >>> >>> >>It's designed for such panic/debugging situation. >>Actually, it's rather inefficient for usual situation >>but the speed of FireWire hide the problem ;-) >> >> > >I think that the most spectacular use of firewire is debugging a >completely hung system. If you've already attached, the debugger can >still access the memory of a system which isn't reacting *at all*. >Obviously you can't continue execution, but just seeing what's in >memory is a great advantage. > >On the other hand, it was my understanding that marcel's new kernel >debugging framework broke firewire debugging. What's the current >status there? > He helped "Mr Firewire" get it going again the next day... > >Greg >-- >Note: I discard all HTML mail unseen. >Finger grog@FreeBSD.org for PGP public key. >See complete headers for address and phone numbers. > >