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Compilation of methods per class.

re:    Date: 	Tue, 25 Sep 1990 10:55:09 PDT
       From: Jon L White <jonl@lucid.com>

       The circumstances you relate above are precisely the symptoms one would
       expect when there is a breakdown in the assumptions underlying the PCL 
       generic-function caching technique.

    Can you elaborate on this?

The assumption that breaks down is that most or all of the lookup
requests find the entry in the cache (first probe or "mirror" probe). 
Unless the more recent PCL has changed algorithms, there are lots of 
reasonable circumstances where there will be a "cache miss" path taken 
even though the entry is present someplace in the cache.

-- JonL --