[Spread-users] Performance Question

[Mike Perik]

I've been working on evaluating the performance of
Spread for distributing a Market Data Feed.  I'm
subscribing to about 33 high volume stocks and
broadcasting the information over a 9 node spread
network.  One publisher and 9 clients receiving the
data.

I'm comparing the times the information is received on
the spread system to times taken for a 9 tcp/ip
client/server setup.

I'm running both systems on the same machines at the
same time so I can take the log files and strip out
the common period of time they ran to do the
comparison of timestamps.   

I'm sending the Spread messages as RELIABLE.

I'm seeing on average that the Spread messages are
about .7 secs behind the tcp/ip clients.  

Has anyone else done similiar tests?

Does this sound right?

I'm a littled surprised by results. 

I am seeing a consistant difference in the times
between the first tcp/ip client and the last tcp/ip
client which you would expect.

Could the machine frln06 be causing a problem?

The client on that machine does not receive any data. 
I've got my network guy looking into why that is
happening.  I believe the router is not configured
properly.

Spread_Segment  225.0.1.1:5003 {
        frln09                  10.0.103.183
        frln11                  10.0.103.185
        frln22                  10.0.103.100
        frln03                  10.0.103.173
        frln16                  10.0.103.124
        frln18                  10.0.103.130
        wango                   10.0.103.102
        frln06                  10.0.1.175
        gamma                   10.0.103.101
        nero                    10.0.103.141
}

Thanks,
Mike


		
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