Jul 12, 2007

Jmeter: Summary Report vs Aggregate Report

When using Aggregate Report listener in Jmeter script, the memory usage will increase linearly with the number of total samples grow. Which might be the biggest reason JMeter got out of memory for long period run. Reason is,

Warning in Aggregate Report help: "Calculation of the Median and 90% Line values requires a lot of memory as details of every Sample have to be saved. See the Summary Report for a similar Listener that does not need so much memory."

So use Aggregate Report only when you care Median and 90% Line values. But what Median, do you really care it, good explanation is here.

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