NOTE: Since I wrote this article, I fixed some bugs in the benchmarks and regenerated the graphs. The updated article is here: Hash Table Shootout Updated
I forked Nick Welch’s hash table shootout benchmark, got it all working, and updated it. The updated code is on my github here: https://github.com/jimbelton/hash-table-shootout
Here are the benchmark results, done on my 8 GByte 3.33 GHz i5 Gateway laptop running Debian 3.11: