Those results look slightly suspicious to me, in that I've seen TBB concurrent_hash_map scale much better than that... I guess it depends on the workload ratio

Those results look slightly suspicious to me, in that I've seen TBB concurrent_hash_map scale much better than that... I guess it depends on the workload ratio... Would have been nice to see a binned/sharded hashmap in the results as well, I've seen pretty good scalability on those as well.