RFR for JDK-7067973: test/java/lang/management/MemoryMXBean/CollectionUsageThreshold.java hanging intermittently

[Alan Bateman]

If you have a preliminary patch then I would suggest bringing it to 
serviceability-dev to discuss it.

-Alan


On 14/11/2013 03:17, Eric Wang wrote:
> Hi Everyone,
>
> I'm working on the bug https://bugs.openjdk.java.net/browse/JDK-7067973.
>
> It is a test bug as the test doesn't guarantee memory allocated from 
> the Old Gen, if the used memory is zero and doesn't cross the 
> threshold, no notification is sent, so both the main thread and 
> Checker thread are blocked to wait for the GC notification.
>
> so the suggested fix is similar as the fix ResetPeakMemoryUsage.java 
> <http://hg.openjdk.java.net/jdk8/tl/jdk/rev/a0896634ab46> to create 
> big object to make sure the old gen usage crosses the threshold and 
> run test with different GC vmoptions.
>
> Please let me know if you have any comments or suggestions. If you are 
> OK with the solution, I'll send a webrev in the next mail.
>
> Thanks,
> Eric