Thanks for running the numbers. On May 8, 2017, at 5:42 PM, Isaac Levy <isaac.r.l...@gmail.com> wrote:
> bitCountInt avgt 10 44550.630 ± 2670.294 ns/op [41880, 47221] > bitCountIntNew avgt 10 33904.058 ± 1108.438 ns/op [32796, 35012] > bitCountLong avgt 10 58638.138 ± 3736.014 ns/op [54902, 62374] > bitCountLongNew avgt 10 38700.601 ± 526.648 ns/op [38174, 39227] So the ranges don’t overlap which is important. > JDK 1.8.0_131, 2.3ghz Core i7, each run counting numbers 0 to 2^14 Thing is one needs to run the benchmark on a variety of hardware. I went through a lot of this sort of thing myself when evaluating among other things for example the crossover thresholds for the Karatsuba and Toom-Cook multiplication algorithms in BigInteger multiplication. There was a lot of variation. Thanks, Brian
