Analyzing shared resources

Performance problems arise when an application or a resource uses most of the available resources in the shared infrastructure. Ops Center Analyzer supports efficient optimization of the shared infrastructure by quickly identifying the resource contention problems.

1. In the Analyze Bottleneck window, click Analyze Shared Resources.
2. In the Analyze Shared Resources window, the performance charts appear for the bottleneck candidate and the resources using the bottleneck candidate.
3. Compare the performance trends of the bottleneck candidate with the resources that use it. If the compared resources display similar trends, then you can assume that the resource in the shared infrastructure is causing the bottleneck.

   If you cannot determine the cause of the bottleneck from the displayed graphs, check the graphs of different metrics. To view the graph of a different metric, select it from the Metric list. You can also add a performance graph of a different component from the Add Graph menu.

   In the following example, the CPU utilization value of a virtual machine is compared with the CPU utilization of other virtual machines and volumes. The performance trends confirm that one of the VMs in the shared infrastructure is overutilizing the CPU.
   The CPU bottlenecks occur when several VMs run on the same physical machine, and end up sharing the same CPU. If the VMs (logical resources) share the same CPU (physical resource) and if one of the VMs utilizes the CPU more than the others, the total efficiency of the shared resource is degraded and the CPU utilization rate increases. The CPU might become saturated with requests because of resource contention problems.