The line in the middle of the box is the 50th percentile, representing the median value - the exact middle value of all observed values.This means that 75% of the time, the value is at or below this level. The top of the box represents the 75th percentile.This is also the default measure used for CPU headroom calculations and visualisation. This means that 95% of the time, the value is at or below this level. The upper whisker of the box plot shows the 95th percentile.To better understand how percentiles are reflected in the box plots, see these details: Using peak can significantly overstate capacity requirements and lead to inefficient use of the resource available. While a sensitive measure, this is not as sensitive as the peak. This reflects that the value of the metric was at this level or lower 95 percent of the time that is summarised. Rather than use an average, Capacity Planner uses percentile measures.īy default, the CPU measure is 95th percentile but this can be changed in the Model panel. The 100% peaks and 0% troughs are not necessarily a good indication of overall performance of the hosts. The quartiles are bound by individual percentile values.Ĭapacity Planner box plots do not display outliers.The box is where the usage percentage spends most of its time.The names of the charts change depending on which metric you are viewing: CPU, memory or Disk I/O.Ĭapacity Planner quartiles are bound by specific percentiles: This chart is available for both hosts and VMs. The axis is scaled to according to the highest upper whisker across all days. The demand is shown as a percentage of the host’s overall capacity. This chart initially shows the host demand, but will update to show a VM demand if a VM is selected on the host demand by VM chart. Host or VM Demand by date - shows a box plot of demand for each day for the host or a selected VM. This area initially shows data for the host, but will update to show data for a VM if one is selected on the VM demand chart.
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