RFR: 8168396: Unexpected OOME in GcCauseTest02 and GcTest02

Michail Chernov michail.chernov at oracle.com
Thu Oct 27 13:23:46 UTC 2016


I'd like to update the webrev after offline discussion with Dmitry 
Fazunenko. Classes structure was simplified, removed unnecessary interface.

Tests GcCauseTest02 and GcTest02 were updated - old version can throw 
OOME. The reason of OOME is that tests do not consider available free 
heap and try to fill 70% of all heap. This change makes heap size fixed 
( InitialHeapSize == MaxHeapSize ). New version tries to make heap usage 
more than 70% and invokes System.gc() to update performance 
counters/pools statistics.



On 26/10/2016 16:02, Michail Chernov wrote:
> Hi,
> Could you please review this change?
> http://cr.openjdk.java.net/~mchernov/8168396/webrev.00/
> https://bugs.openjdk.java.net/browse/JDK-8168396
> Initial heap size and max heap size were made equal to guarantee 
> expected memory allocation. Previous version of test can throw OOME 
> because does not consider existing free heap size.
> Thanks,
> Michail

More information about the hotspot-gc-dev mailing list