A guarantee failure with CMSClassUnloadingMaxInterval

Stefan Karlsson stefan.karlsson at oracle.com
Thu May 16 21:16:15 UTC 2013

On 5/16/13 10:31 PM, Hiroshi Yamauchi wrote:
> Hi Ramki,
>> I can't recall the history behind the flag for class unloading every N Concurrent collections, but your analysis appears spot on to me. I can review the code tomorrow morning and confirm since its been a while since I looked at this code...
> I suppose that it's not a flag that's commonly used. It'd be great if
> you can take a look.

FYI, I ran some parallel class loading tests with with 
-XX:CMSClassUnloadingMaxInterval=5 and get similar kind of failures.

We probably treat the Klasses as weak roots when we shouldn't, or 
something similar.

> Thanks.

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