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TIBCO Rendezvous® 8.7.0

# Sufficiency and Effects

Designers of distributed applications need to assess the effect of a proposed application on the network—long before deployment, and often before any code exists. The performance assessment tool can help answer questions such as these:

| • | Can Rendezvous software in this network transfer data at the rate projected for this application?

| • | Increased message traffic affects the operation of network infrastructure and elements such as routers, WAN links, individual computers, and previously deployed network applications (including Rendezvous applications, as well as mounted remote file systems, `telnet`, and others). What are the secondary effects of deploying an application that sends messages at the projected data rate?

## Limits of Performance Assessment

Warning | Although the performance assessment tool can measure sufficiency of network transport, and the secondary effects of projected message traffic, its measurements are an idealized abstract. It cannot measure the total effect of a proposed, and as yet unimplemented, application. Generating data to send in messages, processing inbound messages, displaying data from inbound messages to the user—all of these activities and their affect on the application’s host computer are beyond the scope of the performance assessment tool. For example, this tool can determine that the network can absorb 300 query messages per second, but this figure does not indicate whether a database application can actually process queries and return results at that rate. The performance assessment tool can establish an upper bound on application message transport performance, and help gauge some of the secondary effects, but it cannot prove an application as a whole will operate properly.

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