ALR0541W The Overall Port Response Time of port port name in storage system storage system name was measured to be measured value ms/op, which violated the defined warning-stress boundary value of boundary value ms/op.
Explanation
Overall Port Response Time measures the average number of milliseconds that it took to service each I/O operation for ports. A threshold was defined on this metric, which causes the measured value to be compared to the defined boundaries for each set of performance statistics collected from the storage system.
This message indicates that a threshold boundary violation occurred. In this case, the specified port in the storage system has an Overall Port Response Time that is greater than or equal to the warning-stress boundary, but less than the critical-stress boundary that was defined for the related threshold.
Action
The threshold violation might indicate that a performance problem exists for this port. Either the port is experiencing a hardware or software related problem that is causing a drop in performance, or the port is being overloaded with too high a workload. If the workload is too high, moving some of the port's workload to other less busy ports might resolve the problem.
However this threshold indication is only as good as its defined boundary values. If the specified boundary value is too low, IBM Spectrum Control might recognize many violations, even though there is really no underlying performance problem with the port. In this case, increase the boundary value in the threshold definition to reduce the number of unnecessary alerts.