StringInternCleanup test times out

[Zhengyu Gu]

Looks good.

-Zhengyu

On 07/03/2018 12:49 PM, Aleksey Shipilev wrote:
> http://cr.openjdk.java.net/~shade/shenandoah/tests-stringintern/webrev.01/
> 
> Fun fact: recent improvements to Pacer make workloads more resistant to allocation failures, and
> making ClassUnloadingWithConcurrentMark off by default made StringInternCleanup time out. Because it
> waits for degen/full gc to purge the StringTable now, and it eventually succeeds after the
> allocation failure, but it now takes a while. It takes more time with precise pacer.
> 
> The way out it to make the test 5x shorter and selectively enable ClassUnloadingWithConcurrentMark.
> 
> Testing: StringInternCleanup
> 
> Thanks,
> -Aleksey
>