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How cluster operations can affect workload response times

Operations represent the activity of all user-defined and system-defined workloads on a cluster. The operations statistics help you determine whether cluster processes, such as making backups or running deduplication, are impacting workload response times or might have caused, or contributed to, a performance incident.

When analyzing performance incidents, you can use the operations statistics to determine if a performance incident was caused by an issue on the cluster. You can identify the specific workload activities that might have been the main contributors to the performance incident. Operations are measured in operations per second (ops/sec).


Performance Manager Operations chart

This example shows the Operations chart on the Volume Details page. The actual operations statistics is a blue line and the expected range of operations statistics is gray.

Note: In some cases where a cluster is overloaded, Performance Manager may display the message Data collection is taking too long on Cluster <cluster_name>. This means that not enough statistics have been collected for Performance Manager to analyze. You need to reduce the resources the cluster is using so that statistics can be collected.