String deduplication can happen in two different contexts. The first one is the deduplication thread, where the vast majority of deduplication occurs. The second context is when deduplication occurs in Java threads as a result of a call to String.intern(). Deduplications that occur in the second case is currently not included in the string deduplication statistics printed to the GC log. The suggested enhancement here is to make it possible to include that information in the printouts.