Hi Eli,

I make a patch for doc.

2008-10-22  Hui Zhu  <teawater@gmail.com>

	* gdb.texinfo: Add documentation for process record and replay.

Thanks,
Hui

On Sat, Oct 18, 2008 at 03:47, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: "Jakob Engblom" <jakob@virtutech.com>
>> Cc: <msnyder@vmware.com>,
>>       <gdb-patches@sourceware.org>
>> Date: Fri, 17 Oct 2008 21:31:36 +0200
>>
>> > > > signals? crashes? etc.  Are there things that simply cannot be
>> > > > reproduced exactly, due to fundamental limitations of the replay
>> > > > target?
>> >
>> > Do you have an opinion about these concerns?
>>
>> I would like to jump in here and point out that this will depend on the nature
>> of the target.  Simics, and presumably other full-system simulation solutions,
>> 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.
>>
>> If you try to do this on a live machine, it is a bit more tricky.
>>
>> So this is best left to the underlying mechanism, in my experience.
>
> We should at least describe a couple of possibilities and tell the
> reader to consult the documentation of the particular target for the
> full details.
>