The cluster CPU Usage charts monitor the CPU utilization of the hosts, resource pools, and virtual machines in the cluster. This chart displays the 10 child objects in the cluster with the most CPU usage.
This chart is located in the Resource Pools and Virtual Machines view of the Cluster Performance tab.
|<host>, <resource pool>, or <virtual machine>||Amount of CPU actively used by the host, resource pool, or virtual machine in the cluster.
A short spike in CPU usage indicates that you are making the best use of cluster resources. However, if the value is constantly high, the CPU demanded is likely greater than the CPU capacity available. A high CPU usage value can lead to increased ready time and processor queuing of the virtual machines on the hosts in the cluster.
If performance is impacted, consider taking the following actions.
|1||Verify that VMware Tools is installed on each virtual machine.|
|2||If the cluster is not a DRS cluster, enable DRS. To enable DRS, perform the following tasks:
If the cluster is a DRS cluster:
|4||Migrate one or more virtual machines to a new host.|
|5||Upgrade the physical CPUs or cores on each host in the cluster if necessary.|
|6||Enable CPU-saving features, such as TCP Segmentation Offload.|
|7||Replace software I/O with the dedicated hardware, such as iSCSI HBAs or TCP Segmentation Offload NICs.|