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No appreciable change in performance was observed after increasing the sizes of these tables and then testing with a single client. However, there was an email that indicated high CPU overheads for a heavily loaded NFSv4 and it is hoped that increasing the sizes of the hash tables via these tunables might help. The tables remain the same size by default. Differential Revision: https://reviews.freebsd.org/D2596 MFC after: 2 weeks