RFR(S): 8220672: [TESTBUG] TestCPUSets should check that cpuset does not exceed available cores

[mikhailo.seledtsov at oracle.com]

Hi David,


On 5/19/19 9:01 PM, David Holmes wrote:
> Hi Misha,
>
> On 18/05/2019 8:36 am, mikhailo.seledtsov at oracle.com wrote:
>> Please review this change that fixes the TestCPUSets test. In short, 
>> in some configurations the size of CPU set
>> exceeds the available amount of cores; see bug description and 
>> comments for details.
>> The fix (or some may say work-around) in this change is to limit the 
>> size of the set to the number of available CPUs.
>
> I think the workaround is reasonable and should be pushed. But as per 
> the bug report I think we still need to get to the bottom of where the 
> misinformation is coming from and whose bug it really is.
Thank you for review. I will follow up with further investigation after 
pushing this work-around.


Thank you,
Misha
>
> Thanks,
> David
> -----
>
>>      JBS: https://bugs.openjdk.java.net/browse/JDK-8220672
>>      Webrev: http://cr.openjdk.java.net/~mseledtsov/8220672.00/
>>      Testing:
>>        - ran the affected test on hosts where issue occurred
>>        - ran the affected test on a variety of hosts in 
>> build-and-test cluster
>>        The problem does not show up anymore.
>>
>> Thank you,
>> Misha
>>