Memory trend graphs

The Performance Monitoring home page includes trend graphs that show memory utilization data that is plotted against a default time interval of 4 hours.

By default, the trend graph shows server level data; however, you can change the view to display aggregated or Active Memory Sharing (AMS) level data. To switch from one view to another view, click More Graphs and choose Server Level Utilization, Aggregated Level Utilization, or AMS Level Utilization.

Memory trend graph: Server Level Utilization view

The Server Level Utilization view shows the memory usage for the server. Shaded areas indicate the amount of memory that is assigned to the server, the amount of memory that is allocated for use by the server, and the total memory available for use. You can compare the shaded areas to determine whether you maximized the memory allocation for your server.

Memory trend graph: Aggregated Level Utilization view

The Aggregated Level Utilization view shows the collective memory usage for the partitions on that server. Shaded areas indicate the amount of memory that is allocated to the system firmware, the amount of memory that is used by all Virtual I/O Servers, and the amount of memory available for all partitions. You can compare the trend lines to determine whether you allocated more memory or less memory for the partitions on your server.

Memory trend graph: AMS Level Utilization view

The AMS Level Utilization view shows the amount of memory that is used by Active Memory Sharing (AMS). The shaded area indicates the amount of memory that is used by the system firmware at the times that are displayed along the horizontal axis. You can review this information periodically to determine whether your system benefits from using memory from Active Memory Sharing. If you are not using Active Memory Sharing, this information is not available.