Hi, if you're really interested in total order broadcast, you should have a look on this survey (more than 60 protocols referenced) :

Xavier Défago, André Schiper, Péter Urbán: Total order broadcast and multicast algorithms: Taxonomy and survey. ACM Comput. Surv. 36(4): 372-421 (2004)

ciao,

W.

Le 13 avr. 10 à 21:11, nascent mind a écrit :

Thanks for the reply. Somehow my message was not going to this list. So I took that time to dig more and read lamport's paper. There he gives the how to break the tie just as you guys said. I was following Tannenbaum's book and this was not mentioned. Hence was quite confused. :)

On Tue, Apr 13, 2010 at 10:06 PM, David-Sarah Hopwood <[email protected] > wrote:
nascent mind wrote:
> Hi all,
>
> I am reading up on totally ordered multicasting and I find that all > processes have the same message order in its queue. Does this work on
> concurrent messages or messages having the same timestamp?

It's easy to ensure that distinct messages effectively cannot have the
same timestamp, by having some rule for breaking ties -- for example by a lexicographic ordering of (timestamp, sending server, message contents).

--
David-Sarah Hopwood  ⚥  http://davidsarah.livejournal.com


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