RFR(XS): 8209743: [TESTBUG] java/lang/management/MemoryMXBean/LowMemoryTest2.sh fails with OutOfMemoryError running in CDS mode

[Ioi Lam]

Looks good. Thanks!

Ioi

> On Aug 28, 2018, at 11:02 AM, Jiangli Zhou <jiangli.zhou at oracle.com> wrote:
> 
> The test change looks ok to me.
> 
> Thanks,
> 
> Jiangli
> 
> 
>> On 8/28/18 10:54 AM, Calvin Cheung wrote:
>> bug: https://bugs.openjdk.java.net/browse/JDK-8209743
>> 
>> The first 3 scenarios of the test failed with "java.lang.OutOfMemoryError: Metaspace" when running with CDS archive.
>> A simple fix is to increase the MaxMetaspaceSize from 16m to 32m.
>> 
>> bash-4.2$ hg diff test/jdk/java/lang/management/MemoryMXBean/LowMemoryTest2.sh
>> diff --git a/test/jdk/java/lang/management/MemoryMXBean/LowMemoryTest2.sh b/test/jdk/java/lang/management/MemoryMXBean/LowMemoryTest2.sh
>> --- a/test/jdk/java/lang/management/MemoryMXBean/LowMemoryTest2.sh
>> +++ b/test/jdk/java/lang/management/MemoryMXBean/LowMemoryTest2.sh
>> @@ -57,9 +57,9 @@
>>  # Also we set the max metaspace to 16MB - otherwise the test takes too
>>  # long to run.
>> 
>> -go -noclassgc -XX:MaxMetaspaceSize=16m -XX:+UseSerialGC LowMemoryTest2
>> -go -noclassgc -XX:MaxMetaspaceSize=16m -XX:+UseParallelGC LowMemoryTest2
>> -go -noclassgc -XX:MaxMetaspaceSize=16m -XX:+UseConcMarkSweepGC LowMemoryTest2
>> +go -noclassgc -XX:MaxMetaspaceSize=32m -XX:+UseSerialGC LowMemoryTest2
>> +go -noclassgc -XX:MaxMetaspaceSize=32m -XX:+UseParallelGC LowMemoryTest2
>> +go -noclassgc -XX:MaxMetaspaceSize=32m -XX:+UseConcMarkSweepGC LowMemoryTest2
>> 
>>  # Test class metaspace - might hit MaxMetaspaceSize instead if
>>  # UseCompressedClassPointers is off or if 32 bit.
>> 
>> Tested on linux, solaris, and macosx with the same vmoptions as in tier5. Also repeated the test 5 times on each platform.
>> 
>> thanks,
>> Calvin
>