slog: improve benchmark handling

Make some improvements to how benchmarks are run, motivated
by the latest benchstat
(https://pkg.go.dev/golang.org/x/perf/cmd/benchstat).

- Run each benchmark 10 times, the minimum recommended in the
  benchstat package doc.

- Use the -ignore flag to benchstat to remove the need to edit
  the "pkg" line in benchmark output.

- Create a Makefile to put all benchmark-running code in one place.
  - Remove all run_benchmarks.sh scripts.
  - Use the same name for each subdirectory's output file to enable
    a single Makefile rule.

Change-Id: Idc6d02ad1bcf10f1a4cd1e1f7f326da9b015ec2a
Reviewed-on: https://go-review.googlesource.com/c/exp/+/463355
Run-TryBot: Jonathan Amsterdam <jba@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
9 files changed
tree: 144e440ed927017082215249c3ddfb6923a704cc
  1. apidiff/
  2. cmd/
  3. constraints/
  4. devtools/
  5. ebnf/
  6. ebnflint/
  7. errors/
  8. event/
  9. inotify/
  10. io/
  11. jsonrpc2/
  12. maps/
  13. mmap/
  14. rand/
  15. shiny/
  16. shootout/
  17. slices/
  18. slog/
  19. sumdb/
  20. typeparams/
  21. utf8string/
  22. .gitattributes
  23. .gitignore
  24. codereview.cfg
  25. CONTRIBUTING.md
  26. go.mod
  27. go.sum
  28. LICENSE
  29. PATENTS
  30. README.md
README.md

exp

PkgGoDev

This subrepository holds experimental and deprecated (in the old directory) packages.

The idea for this subrepository originated as the pkg/exp directory of the main repository, but its presence there made it unavailable to users of the binary downloads of the Go installation. The subrepository has therefore been created to make it possible to go get these packages.

Warning: Packages here are experimental and unreliable. Some may one day be promoted to the main repository or other subrepository, or they may be modified arbitrarily or even disappear altogether.

In short, code in this subrepository is not subject to the Go 1 compatibility promise. (No subrepo is, but the promise is even more likely to be violated by go.exp than the others.)

Caveat emptor.