From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11633 invoked by alias); 17 Oct 2008 19:32:46 -0000 Received: (qmail 11618 invoked by uid 22791); 17 Oct 2008 19:32:45 -0000 X-Spam-Check-By: sourceware.org Received: from oden.vtab.com (HELO oden.vtab.com) (62.20.90.195) by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 17 Oct 2008 19:31:55 +0000 Received: from oden.vtab.com (oden.vtab.com [127.0.0.1]) by oden.vtab.com (Postfix) with ESMTP id 46BAB26F65D; Fri, 17 Oct 2008 21:31:51 +0200 (CEST) Received: from polhem (unknown [62.20.90.206]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by oden.vtab.com (Postfix) with ESMTP id 1BF9426EF06; Fri, 17 Oct 2008 21:31:49 +0200 (CEST) From: "Jakob Engblom" To: "'Eli Zaretskii'" , "'teawater'" Cc: , References: <48F63B15.3070705@vmware.com> In-Reply-To: Subject: RE: [reverse RFC] Add documentation for process record and replay Date: Fri, 17 Oct 2008 19:32:00 -0000 Message-ID: <00cd01c9308f$002aa0a0$007fe1e0$@com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook 12.0 Content-Language: sv X-IsSubscribed: yes Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2008-10/txt/msg00439.txt.bz2 > > > signals? crashes? etc. Are there things that simply cannot be > > > reproduced exactly, due to fundamental limitations of the replay > > > target? >=20 > Do you have an opinion about these concerns? I would like to jump in here and point out that this will depend on the nat= ure of the target. Simics, and presumably other full-system simulation solutio= ns, can replay the entire IO of a machine. This includes any external IO that = is asynch to the simulator execution (such as network packets and user input). Between machines in a simulated network of machines, replay is obviously perfect.=20 If you try to do this on a live machine, it is a bit more tricky.=20 So this is best left to the underlying mechanism, in my experience. Best regards, /jakob _______________________________________________________ Jakob Engblom, PhD, Technical Marketing Manager Virtutech Direct: +46 8 690 07 47=20=20=20=20 Drottningholmsv=E4gen 14 Mobile: +46 709 242 646=20=20=20 11243 Stockholm Web: www.virtutech.com=20=20 Sweden ________________________________________________________ =20