A small CLI to parse the output of go test -bench and output to CSV.
It passes the go test output verbatim on STDERR and the CSV output to STDOUT.
$ go install github.com/maragudk/go-bench2csv/cmd/bench2csv@latest
$ go test -cpu 1,2,4,8 -bench . | bench2csv >benchmark.csv
goos: darwin
goarch: arm64
pkg: github.com/maragudk/go-bench2csv
BenchmarkProcess/in_parallel_just_for_fun 4314 276820 ns/op
BenchmarkProcess/in_parallel_just_for_fun-2 8292 145504 ns/op
BenchmarkProcess/in_parallel_just_for_fun-4 15826 75832 ns/op
BenchmarkProcess/in_parallel_just_for_fun-8 19111 73122 ns/op
PASS
ok github.com/maragudk/go-bench2csv 7.324sAlso works with go test -benchmem:
$ go test -cpu 1,2,4,8 -bench . -benchmem | bench2csv -mem >benchmark.csv
goos: darwin
goarch: arm64
pkg: github.com/maragudk/go-bench2csv
BenchmarkProcess/in_parallel_just_for_fun 4106 292497 ns/op 53892 B/op 738 allocs/op
BenchmarkProcess/in_parallel_just_for_fun-2 7929 151227 ns/op 53897 B/op 738 allocs/op
BenchmarkProcess/in_parallel_just_for_fun-4 15013 79910 ns/op 53909 B/op 738 allocs/op
BenchmarkProcess/in_parallel_just_for_fun-8 18214 66196 ns/op 53941 B/op 738 allocs/op
PASS
ok github.com/maragudk/go-bench2csv 7.402sMade in 🇩🇰 by maragu, maker of online Go courses.
