Troubleshooting Performance Monitor

Part of monitoring data is missing.

While displaying Performance Monitor in short range, if I/O workloads between hosts and the storage system become heavy, the storage system gives higher priority to I/O processing than monitoring processing. If you notice that monitoring data is frequently missing, change to a longer collection interval. If part of the monitoring data is missing for reasons other than this explanation, see the table in Causes of invalid monitoring data

The monitoring data is not updated, even though Monitoring Switch is set to Enable.

If the time setting of the SVP is changed, the monitoring data might not be updated. Set Monitoring Switch to Disable, and set Monitoring Switch to Enable again.

The WWN of a host bus adapter is displayed in red on the WWN tab.

The HBA for the WWN that is displayed in red is connected to two or more ports, but the traffic between the HBA and some of the ports is not monitored by Performance Monitor. When many-to-many connections are established between HBAs and ports, make sure that all traffic between HBAs and ports is monitored. For details, see Monitoring all port-HBA traffic: many-to-many connections.