o Added some input from real life deployments and input on
a test
with batched notifies.
o Added Calculations of messages and bytes per user.
o Calculations are now done both for minimal size of presence
document and for an average size of rich presence
document.
o Comparison with other protocol is now done using small,
tiny and
rich presence document sizes.
o Removed dialog optimization with partial notification since
it is
not relevant
o Fixed a few issues in calculations that were found by Victoria
Beltran-Martinez.
* Added overhead for RLMI for dialog optimizations
(list
subscription). This calculation fix
actually shows that dialog
optimization is not a real optimization from
the point of view
of bytes and number of messages.
* When NOTIFY optimizations are applied no need
for final NOTIFY
* The usage of RLS between domains was clarified.
o Significantly enhanced the conclusions section
o Several typo fixes
Thanks
--Avshalom
----- Forwarded by Avshalom
Houri/Haifa/IBM on 18/11/2007 12:22 -----
A New Internet-Draft is available from the on-line
Internet-Drafts directories.
This draft is a work item of the SIP for Instant Messaging and Presence
Leveraging Extensions Working Group of the IETF.
Title : Presence Interdomain Scaling
Analysis for SIP/SIMPLE
Author(s) : A. Houri, et al.
Filename : draft-ietf-simple-interdomain-scaling-analysis-03.txt
Pages : 59
Date : 2007-11-18
The document analyzes the traffic that is generated due to presence
subscriptions between domains. It is shown that the amount of
traffic can be extremely big. In addition to the very large traffic
the document also analyzes the affects of a large presence system on
the memory footprint and the CPU load. Current approved and in work
optimizations to the SIMPLE protocol are analyzed with the possible
impact on the load. Separate documents contain the requirements for
optimizations and suggestions for new optimizations.
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