Comment by puzpuzpuz-hn

Allocation rates comparison is included. If your application writes into the map most of the time, you should go with plain map + RWMutex (or orcaman/concurrent-map). But if, for instance, you're using the map as a cache, read operations will dominate and having better read scalability becomes important. As an example, Otter cache library uses a modified variant of xsync.Map, not a plain map + RWMutex.