Extract a small timing data value from playbacks

Use and application of the eValid server loading (LoadTest) capability. And in the cloud computing context for monitoring and loading.

Extract a small timing data value from playbacks

Postby Jaxoni » Mon Apr 08, 2013 4:29 pm

How can I extract a small timing data value from mtultiple parallel playbacks?
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Re: Extract a small timing data value from playbacks

Postby eValid » Mon Apr 15, 2013 10:36 am

If you are running multiple parallel eValid copies, for example, during a LoadTest run, then the EventLog has to be handled carefully. You need to tell eValid to use separate, independet EventLogs for each eValid instance.

No matter what, you need to use the ResetTimer and ElapsedTime commands. Usually you put them as close as you can to the start and right after the event or activity you want to time.

This works find...no interference, but at higher browser user (BU) counts, e.g. more than several hundred or so, that can be a LOT of I/O activity on the local hard drive.

The alternative we like to recommend to people is to use a SaveRecord command within each of the browser instances that writes data to a common file. Usually this is one line per timing data point, and the Windows OS has no problem coordinating multiple writes. We also put a timestamp and sometimes a unique UserName on each record...so we can see from analyzing the resulting file after the run is done, which BU did better or worse.

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