Utility for comparison of googlebenchmark results.
Usage:
$ go get github.com/dvyukov/gbenchcmp
$ gbenchcmp old.res new.res
Benchmark Time(ns): old new diff CPU(ns): old new diff
===============================================================================================
contraction_NxNxN_48T/10 404 433 +7.18% 404 433 +7.18%
contraction_NxNxN_48T/64 8843 8834 -0.10% 8848 8840 -0.09%
contraction_NxNxN_48T/512 1220311 455426 -62.68% 10044706 15969236 +58.98%
contraction_NxNxN_48T/4k 96134407 84270601 -12.34% 3402981956 3901162020 +14.64%
contraction_NxNxN_48T/5k 181780696 152923999 -15.87% 6337035902 7136203158 +12.61%
The tool can also show CPU load and choose last/best results (if several results are present in the input files).