Locating Performance Obstacles

An application that performs more poorly than expected could be sending messages faster than the network can accept them. The performance assessment tool can help in two ways:

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Use rvperfm in automatic mode to determine the optimal send rate for the network. Then adjust the application to send messages at that rate.

For a specific example of this method, see Very Large Messages.

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Set rvperfm parameters to mimic the sending behavior of the application. Then adjust rvperfm parameters to improve performance. Finally, adjust the application’s behavior.

A network protocol monitor (such as rvtrace) can help you diagnose performance obstacles using this method. For more information, see Protocol Monitor (rvtrace).