methoddata grows in metaspace jdk 1.8.0_40 64bit

[Dillip Pattnaik]

hi,
We were running an application in java 7 with lot of reflection and custom
class loader. The perm gen normally reaches a high threshold and
stabilizes. But once we moved to 1.8.0_40 64 bit recently, the metaspace
keeps growing. After using gc class_stat we found that the number of
classes loaded are constant. But the MethodData per class keeps growing in
20MBs. Could you please advise why the method data is growing and if there
is a way to debug it more and find out what is causing it?
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