Github user wilderrodrigues commented on the pull request:
https://github.com/apache/cloudstack/pull/509#issuecomment-114421017
Before we continue in a face-to-face chat, which would be better, just few
point to take into account:
* The Profiler class is used as a profiler, to just measure how long a code
took to be executed; used along with sleep calls - like a stop watch; and,
still, as a monitor - there are lock implementations based on it. It makes the
Profile class a profile, a stop-watch and a monitor.
* From a profiler perspective, do a Star, wait for 1 second, then a Stop
and check how long it took to compute doesn't seem right to me.
The comments above are only related to the fact that the Profiler class is
being exploited inside ACS.
Concerning the getDuration(). I agree that once it is taken into account to
calculate milliseconds, it will be flaw.
In that case, it's too bad I trusted the existing test - which has a glitch
in the assertion.
My suggestion is to refactor the getDuration(), renaming it into
getDurationInMillis() and create a getDuration() which returns the nanotime -
microseconds. The test has to be fixed as well.
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