[8u-dev] Review request : JDK-8068416: LFGarbageCollectedTest.java fails with OOME: "GC overhead limit exceeded"

[Konstantin Shefov]

Igor,

I have added comment to https://bugs.openjdk.java.net/browse/JDK-8068416
Tried 10 seeds, for all of them test fails with OOME for both 8u60 and 9.

-Konstantin

On 06/04/2015 12:15 PM, Igor Ignatyev wrote:
> Konstantin,
>
> could you please run the test on JDK 9 w/ the seed values which lead 
> to failures on JDK 8u?
> and please update the bug w/ gotten information.
>
> Thanks,
> Igor
>
> On 06/04/2015 12:10 PM, Konstantin Shefov wrote:
>> Igor,
>>
>> It seems I have given you wrong information. This test fails with OOME
>> against JDK 9 also, I managed to reproduce the failure now.
>> It was hard to reproduce it because of randomness, I need to rerun the
>> test 50 times. Although the test seems to fail with OOME more often
>> against JDK 8u, but I think it is just factor of randomness in the test.
>>
>> So I do not think it is a product bug then.
>>
>> -Konstantin
>>
>> On 06/03/2015 11:47 PM, Igor Ignatyev wrote:try to reproduce failres
>>> Konstantin,
>>>
>>> do you have an explanation why the test passes on jdk 9?
>>> from my point of view, it indicates there is a product bug in 8u which
>>> should be fixed and your fix just hides it.
>>>
>>> Igor
>>>
>>> On 06/03/2015 10:14 PM, Seán Coffey wrote:
>>>> I bumped into this failure myself today. I think you've got a typo.
>>>> 440 should be 40. Looks like a good approach otherwise.
>>>>
>>>> Regards,
>>>> Sean.
>>>>
>>>> On 03/06/2015 17:33, Konstantin Shefov wrote:
>>>>> Hello,
>>>>>
>>>>> Please review the test bug fix
>>>>> https://bugs.openjdk.java.net/browse/JDK-8068416
>>>>> Webrev is http://cr.openjdk.java.net/~kshefov/8068416/webrev.00/
>>>>> Test fails only against JDK 8u and passes against JDK 9.
>>>>>
>>>>> Fix is to reduce the number of iterations to 40. With that number of
>>>>> iterations the test passes on those hosts where it failed before.
>>>>> The number of iterations the test start to fail is 65.
>>>>> Before the fix the number of iterations was 84.
>>>>>
>>>>> Thanks
>>>>> -Konstantin
>>>>
>>