For your own benchmarks to test the relative speeds of the various DBMs under MLDBM::Sync, which is used by CacheDB, you may run the ./bench/bench_sync.pl script from the MLDBM::Sync distribution on your system. CacheDir By default, the cache directory is at StateDir/cache, but CacheDir can be used to set the StateDir value for caching purposes. One may want the CacheDir separate from StateDir for