Report for improved id_table implementation
it has up to 25% less size (19% on smallest tables)
it is a bit slower on small tables (~3%) for
hitand a bit faster for
due to additional mix of key bits, it is always faster on big tables.
Note: bit mixing makes small tables slower, so it is enabled only for big tables (>64 capacity).
If performance for small tables much more important, mixing could be removed completely (this will return 1% on