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vSphere High Performance Essentials by Christian Stankowic

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Capture and analyze data

At the beginning of this chapter, you learned that esxtop offers a batch mode to capture performance data. In combination with additional tools, such as PerfMon, we can analyze this data in a graphical way.

Utilize esxtop to record data

When running in batch mode, esxtop will capture data in the Comma Separated Values (CSV) format. The following parameters are crucial when generating performance reports:

Parameter

Explanation

-b

Enable batch mode

-n

Number of iterations (data captures)

-d

Delay in seconds between iterations

The total time esxtop is running is calculated as shown in the following:

delay in seconds * number of iterations

Let's focus on an example:

esxtop -b -d 5 -n 100 > log.csv

This call will ...

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