DenseHashTable.HT_OCCUPANCY_PCT

How full we let the table get before we resize. Knuth says .8 is good -- higher causes us to probe too much, though saves memory. However, we go with .5, getting better performance at the cost of more space (a trade-off densehashtable explicitly chooses to make). Feel free to play around with different values, though, via max_load_factor() and/or set_resizing_parameters().

class DenseHashTable(Value, Key, HashFcn, ExtractKey, SetKey, EqualKey)
enum size_t HT_OCCUPANCY_PCT;

Meta