RFR: 8204168: Increase small heap sizes in tests to accommodate ZGC

Per Liden per.liden at oracle.com
Mon Jun 4 13:02:03 UTC 2018

Looks good to me.


On 05/31/2018 02:32 PM, Stefan Karlsson wrote:
> Hi all,
> Please review this patch to increase the heap size for tests that sets a 
> small heap size.
> http://cr.openjdk.java.net/~stefank/8204168/webrev.01
> https://bugs.openjdk.java.net/browse/JDK-8204168
> This change is needed to test ZGC with these tests. ZGC doesn't use 
> compressed oops and has an allocation memory reserve for the GC thread, 
> and hence have a higher smallest heap size compared to other GCs in the 
> code base.
> There are some alternatives to this patch that we could consider (but I 
> prefer the suggested patch):
> 1) Disable these tests when running with ZGC
> 2) Split all these tests into two copies, one copy for ZGC and another 
> for the other GCs.
> I've been running all of these changes through tier{1,2,3} and most of 
> them has been run in tier{4,5,6}.
> Thanks,
> StefanK

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