GrabPERF: Update to the Line Graph

Last night I made some code modifications to the Line Graph (“Basic Chart”) function in GrabPERF. Previously, the performance graph had been built using data gathered from the rollup table, hourly_site, except for the current hour, which was built from the raw data table, data.
Now, both the Availability and Performance graphs are built from the raw data table.
Also, I began using the Math/Stats PEAR package to calculate the statistical data from the results.
However, the most significant change is that the graph now displays Geometric Mean and 85th Percentile values for each hour. This will give a better sense of the “average” performance, as well as the degree to which there are outliers in the data.
Feedback is appreciated.

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