ALR0580E The Port to Local Node Receive Response Time of node node name in storage system storage system name was measured to be measured value ms/op, which violated the defined critical-stress boundary value of boundary value ms/op. Violation of this threshold boundary could mean that it is taking too long to send data between nodes on the fabric, which suggests either a problem with the nodes or congestion around the associated FC ports on the fabric.
Explanation
Port to Local Node Receive Response Time measures the average number of milliseconds that it took to service each receive operation from another node in the local storage system. 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 node in the storage system has a Port to Local Node Receive Response Time that is greater than or equal to the critical-stress boundary that was defined for the related threshold.
Action
The threshold violation might indicate that a performance problem exists for this node. Either the node is experiencing a hardware or software related problem that is causing a drop in performance, or there is some congestion around the storage system's ports in the fabric, which is causing unreasonable delays. Check for errors on the ports, and if necessary follow your storage system's troubleshooting guidelines to determine the root of 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 node. In this case, increase the boundary value in the threshold definition to reduce the number of unnecessary alerts.