[Bug 39860] Negative elapse times in summary report

[bu...@apache.org]

https://issues.apache.org/bugzilla/show_bug.cgi?id=39860

Philippe Mouawad <p....@ubik-ingenierie.com> changed:

           What    |Removed                     |Added
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                 CC|                            |p.mouawad@ubik-ingenierie.c
                   |                            |om
         Resolution|WORKSFORME                  |WONTFIX

--- Comment #7 from Philippe Mouawad <p....@ubik-ingenierie.com> ---
Note from Kirk Pepperdine :
This is most likely due to the timers your kernel is configured to use or NTP
if you have that configured. The behavior of timers in Java cannot be specified
in the JLS as the behavior is both hardware/OS dependent/NTP. Further more,
certain configurations cause the call to go off CPU. On CPU support requires
threads to return to the same core (depending upon which clock you’re
configured to use and which model/rev of CPU you are using). So, there are all
kinds of subtleties than mean more often than not the values reported will be
wrong… hopefully not significantly wrong but… And unfortunately there isn’t
much you can do about it but try to know which clock your kernel is configured
to use and if NTP is running.

Regards,
Kirk

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