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|Sun Network QDR InfiniBand Gateway Switch HTML Document Collection for Firmware Version 2.0|
When you are optimizing the InfiniBand fabric for performance, you might want to know how the throughput increases or decreases according to changes you are making. Alternatively, if you are troubleshooting a port, the perfquery command provides counters of errors occurring at that port. To determine the throughput as a function of time, or if the problem at the port has been resolved, the ibdiagnet -pc command enables you to reset the data counters and error counters to 0.
Gateway Reference, ibdiagnet command
Gateway Reference, perfquery command