G1GC, Java8u40ea, Metaspace questions

[Wolfgang Pedot]

Appearantly Metaspace is ALWAYS grown by MinMetaspaceExpansion even if 
it would not be required.
I ran a test with MinMetaspaceFreeRatio=0 and MetaspaceSize=500M which 
should prevent growth of Metaspace alltogether but I can see a 332k 
increase after every collection in Metaspace.
332k just happens to be the default-value of MinMetaspaceExpansion...

regards
Wolfgang