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Lower (Common) Resource Display

The lower or common portion of each resource display contains bar graphs for nodes in the cluster. An example is the lower portion of the next illustration. The scale at left and right is graduated from 0 to 100, and is interpreted either as a percentage or an absolute value depending on the particular metric. There is a bar graph for each node in the current group set for display, the node name being displayed at the bottom of each graph.

The bar graph for a node contains three separate columns (metrics) as follows:

Memory Utilization (M)

This column is headed by the letter M, and is a percentage value as indicated by the percent sign (%) at the bottom of the column. The value is that of Total MEMutl expressed as a percentage. Total MEMutl is given by
(((Total Memory)-(Free Pages))/(Total Memory)).

I/O Rate (I)

This column is headed by the letter I, and is an absolute value (rate) as indicated by the letter R at the bottom of the column. The value is the Direct I/O rate (number of direct I/Os per second) for the node. If the rate exceeds 100 direct I/Os per second, the column is filled with asterisks.

CPU Utilization (C)

This column is headed by the letter C, and is a percentage value as indicated by the percent sign (%) at the bottom of the column. The value is the percentage of the CPU being utilized, which is equal to the sum of the System and Task CPU percentages given in the tabular reports.