RFR: 8134963 [Newtests] New tests for G1 remembered set up and down

[Dmitry Fazunenko]

Hi everyone,

An updated version of the stress test for Remembered Set:
    http://cr.openjdk.java.net/~dfazunen/8134963/webrev.03/

Tested in RBT in many configurations.
Many thanks to Thomas for his offline comments.

Happy New Year!
Dima



On 13.11.2015 20:31, Dmitry Fazunenko wrote:
> I was noticed that this is a stress test and should be properly marked 
> with "@key stress"
> The test was also moved from test/gc/g1/ to tests/stress/gc.
>
> New webrev: http://cr.openjdk.java.net/~dfazunen/8134963/webrev.02/
>
> If you are interested in how an output from the test will look like:
> ----------System.out:(17/502)----------
> %% Memory
> %%   used          :        2M
> %%   available     :        2045M
> %%   to allocate   :        1840M
> %%   G1 Region Size:        1M
> %% Objects:
> %%   Number of objects:       18400
> %%   objects in region:       10
> %%   N (array length) :       26210
> %%   Reference size   :       4
> %%   Approximate size :       104840(102K)
> %%   Reference number :       1840
> %% Execution:
> %%   Number of iterations: 15
> %%   Time spent:           10seconds
> %%   Free memory left:     195M
> %% Test passed
>
> Thanks,
> Dima
> ----------System.err:(1/15)----------
>
> On 13.11.2015 18:15, Dmitry Fazunenko wrote:
>> Hi everyone,
>>
>> Can I have a couple of reviews for the new test for G1 Remembered Set:
>>
>> https://bugs.openjdk.java.net/browse/JDK-8134963
>> http://cr.openjdk.java.net/~dfazunen/8134963/
>>
>> The test creates a lot of cross region references (making RSet to 
>> grow up) and then clear that references up.
>> The test doesn't check any particular assertions, it just expects 
>> that there will be no crash.
>>
>> Thanks,
>> Dima
>