tree de1c3d937312b416e6f9e28389a3434ecd06326a
parent 771dc36a7a25d260799e3f8bd5e98d49c674b651
author David Chase <drchase@google.com> 1656096929 -0400
committer David Chase <drchase@google.com> 1656356283 +0000

perf: added "regressions" option to perf dashboard

This is based on heuristics around confidence interval
overlap ("change score"), used to detect both interesting
benchmark movement, and to estimate the noisiness of the
benchmarks.  The results here are judged "good enough",
far from "golden".  There are some false positives in the
"regressions" group and a few false negatives in the "couldn't
spot the regression point" group -- but other benchmarks
regressing at the same CL were detected, so "good enough".

Change-Id: I5f609c3837f3bce1f91a5467f2448840a7895793
Reviewed-on: https://go-review.googlesource.com/c/build/+/413688
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>