Sorting 1M records on old computer...around 3sec!
CPU: AMD Phenom 8450 Triple- (3) @ 2.100GHz
Memory: 2283MiB / 3935MiB
%timeit
%timeit df.sort_values([“Last”, “First”])
2.97 s ± 8.8 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)