Memory counters at cluster level
vCenter does not provide a lot of memory counters at the cluster level. From the following performance chart dialog box, you can see that the number of counters drops to just five. Counters related to contention, such as Compression, Swap, and Latency, are no longer available. The Latency counter would be especially useful to track at the cluster level if you had a large environment.
Cluster memory counters in vCenter
The data is not available in real time. This means the data granularity is at 5-minute intervals, not 20 seconds. As the rollup is an average, it means any spike within a 5-minute period may not be visible. ...
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