On Thu, Nov 12, 2015 at 8:50 PM, Mark Waite <[email protected]> wrote:
> I tried -Dconcurrency=10 today and found no difference in wall clock time
> compared to running without that argument.  Does that argument depend on a
> newer version of Jenkins

AFAIK this is available in 1.535+ parent POMs. Assuming you write
`JenkinsRule` tests rather than unit tests, you should see ten tests
start before any start to complete.

Wall clock time is highly sensitive to your machine: number of
processors, free RAM, HDD vs. SSD, etc. If you are patient you can try
something like

mvn clean test-compile; for c in 10 9 8 7 6 5 4 3 2 1; do echo
"concurrency=$c"; time mvn surefire:test -Dconcurrency=$c
-Dmaven.test.failure.ignore &>-; done

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