From: "Ky Srinivasan" <ksrinivasan@novell.com>
To: riel@redhat.com
Cc: Ian.Pratt@cl.cam.ac.uk, perbu@linpro.no, xen-devel@lists.sourceforge.net
Subject: Re: Is continuous replication of state possible?
Date: Fri, 07 Jan 2005 12:22:41 -0700 [thread overview]
Message-ID: <s1de7f2b.024@sinclair.provo.novell.com> (raw)
Ian, as you noted earlier, on an MP machine getting reliable replay
will be difficult - locks need to be acquired in the same order during
the replay as they were acquired initially. In my previous life we had
toyed with implementing a similar strategy on a microkernel (Chorous)
based unix system.
K. Y
>>> Ian Pratt <Ian.Pratt@cl.cam.ac.uk> 1/7/2005 12:29:27 PM >>>
> On Fri, 7 Jan 2005, Ian Pratt wrote:
>
> > It basically just requires deterministic execution and event
> > injection.
>
> This will be hard when running crypto programs that get
> their random numbers directly from the CPU ...
Sure, when CPUs finally get embedded crypto features (and
applications start using and _insisting_ on their presence) we'll
have problems. For the moment, the technique should work.
Ian
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next reply other threads:[~2005-01-07 19:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-07 19:22 Ky Srinivasan [this message]
[not found] <20050109030704.8BAB689DA7@sc8-sf-spam1.sourceforge.net>
2005-01-10 16:53 ` Is continuous replication of state possible? George Washington Dunlap III
[not found] <20050107172010.9AB9C89761@sc8-sf-spam1.sourceforge.net>
2005-01-07 17:51 ` Is Continuous " George Washington Dunlap III
-- strict thread matches above, loose matches on Subject: below --
2005-01-07 14:57 Is continuous " Per Buer
2005-01-07 15:34 ` Ian Pratt
2005-01-07 16:38 ` Avery Pennarun
2005-01-07 17:42 ` Ian Pratt
2005-01-07 17:18 ` Rik van Riel
2005-01-07 17:29 ` Ian Pratt
2005-01-07 18:02 ` Rik van Riel
2005-01-09 2:21 ` Jacob Gorm Hansen
2005-01-09 14:43 ` Harry Butterworth
2005-01-09 16:21 ` aq
2005-01-09 16:43 ` Mark Williamson
2005-01-09 16:56 ` Harry Butterworth
2005-01-07 15:43 ` Mark Williamson
2005-01-07 8:49 Per Buer
2005-01-07 7:37 Cannot start domU from NFS Nauzad Sadry
2005-01-07 10:01 ` Christian Limpach
2005-01-09 0:42 ` Nauzad Sadry
2005-01-09 2:00 ` Is continuous replication of state possible? Harry Butterworth
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