very slow perm gen verification

John Coomes John.Coomes at
Thu May 12 17:33:48 UTC 2011

John Coomes (John.Coomes at wrote:
> When running some nsk tests, I saw several timeouts which appear to be
> due to very slow verification of the perm gen (i.e., 10+ minutes to
> verify a 64MB perm gen (par scavenge)), which is done as the jvm is
> exiting.  Happens frequently, but not every time; and w/my changes as
> well as w/jdk7-b141.
> I vaguely recall some discussion of this a few months ago, but can't
> find any record of it :-(.  Sound familiar to anyone?

In case it's not obvious to some, the verification is done only in
non-product builds.


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