benchseries: ignore results with mismatched compare value

Currently, benchseries assumes that results with compare value ==
denominator is in the denominator set, and everything else is in the
numerator.

In addition to being confusing (BuilderOptions.Numerator is completely
ignored), this breaks things when the compare key isn't set at all. In
that case cmpCfg.StringValues() is always "", so everything ends up in
the numerator and nothing in the denominator, which causes a later crash
due to a missing denominator [1].

Be more explicit and only save results that explicitly fall into the
numerator or denominator.

[1] This fix isn't perfect, as benchmark results that contain only
numerator results and no denominator results will still cause a crash.
That should probably be an error or simply result in no comparisons.

For golang/go#61362.

Change-Id: I1444d0fcb101bcea0f1cdf31de7292211dcbc901
Reviewed-on: https://go-review.googlesource.com/c/perf/+/510475
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: David Chase <drchase@google.com>
2 files changed
tree: 7a45424e1586021ea4f742f6468d38ccdf1a94c2
  1. analysis/
  2. benchfmt/
  3. benchmath/
  4. benchproc/
  5. benchseries/
  6. benchstat/
  7. benchunit/
  8. cmd/
  9. internal/
  10. storage/
  11. CONTRIBUTING.md
  12. go.mod
  13. go.sum
  14. LICENSE
  15. PATENTS
  16. README.md
README.md

Go benchmark analysis tools

Go Reference

This subrepository holds tools and packages for analyzing Go benchmark results, such as the output of testing package benchmarks.

Tools

This subrepository contains command-line tools for analyzing benchmark result data.

cmd/benchstat computes statistical summaries and A/B comparisons of Go benchmarks.

cmd/benchfilter filters the contents of benchmark result files.

cmd/benchsave publishes benchmark results to perf.golang.org.

To install all of these commands, run go install golang.org/x/perf/cmd/...@latest. You can also git clone https://go.googlesource.com/perf and run go install ./cmd/... in the checkout.

Packages

Underlying the above tools are several packages for working with benchmark data. These are designed to work together, but can also be used independently.

benchfmt reads and writes the Go benchmark format.

benchunit manipulates benchmark units and formats numbers in those units.

benchproc provides tools for filtering, grouping, and sorting benchmark results.

benchmath provides tools for computing statistics over distributions of benchmark measurements.

Deprecated packages

The following packages are deprecated and no longer supported:

storage contains a deprecated version of the https://perfdata.golang.org/ benchmark result storage system. These packages have moved to https://golang.org/x/build.

analysis contains a deprecated version of the https://perf.golang.org/ benchmark result analysis system. These packages have moved to https://golang.org/x/build.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the perf repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/perf:” in the subject line, so it is easy to find.