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From "Cornelius, Martin (DWBI)" <Martin.Cornel...@smiths-heimann.com>
Subject Re: [jira] Created: (RIVER-280) make JERI MUX protocol impl maxFragmentSize configurable
Date Thu, 20 Dec 2007 08:32:53 GMT

Hi Bob,

i'd like to note, that the initial goal when i built my little test was,
to find out how JERI and JRMP (and CORBA as well) compare with regard to
*CPU* usage when large data chunks are transferred. Hence, i started
server and client on the same, otherwise unloaded machine. I became a
little alarmed when i noticed, that in this test the throughput with
JERI was below the theoretic capacity of a 100Mbit network, although the
2Ghz CPU was 100% utilized by just shipping the data. In fact, this
would state a knockout against JERI as 'general purpose' transport in
our applications. Thus, i was really happy to find out this is just a
matter of adding 1 line of code to make the fragment size configurable. 

BTW, with a fragment size of 8K and unlimited ration, i also get roughly
the same througput (at 100% CPU) with JERI and JRMP when server and
client are on the same machine.

Another BTW: Do you think that unlimited ration has the consequence that
the deadlock-avoidance feature of JERI Multiplexing is compromised ?

Kind regards, Martin

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