[16] 8249772: (ch) Improve sun/nio/ch/TestMaxCachedBufferSize.java

[Brian Burkhalter]

To resolve [1] the proposed change [2] would:

1. Compare the ending values of the direct buffer pool count and total capacity with their respective starting values instead of with zero.
2. Replace the use of Random with a SplittableRandom obtained from RandomFactory.
3. Increase the intra-loop verbosity from 2 to 10 prints per thread.

The change would also remove the test from the problem list so that if it fails again, then more information might be available to help with fixing [3].

Thanks,

Brian

[1] https://bugs.openjdk.java.net/browse/JDK-8249772
[2] http://cr.openjdk.java.net/~bpb/8249772/webrev.00/
[3] https://bugs.openjdk.java.net/browse/JDK-8212812