diff options
| author | Keith Randall <khr@golang.org> | 2025-05-14 12:46:28 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2025-05-15 14:24:16 -0700 |
| commit | a88f093aaa35ae18aa02389624822101cbf231c0 (patch) | |
| tree | d0fb43316339ff49e5d43eee7b92d0f54ce35933 /src/strings/strings_test.go | |
| parent | 19f05770b05ef2a12692f522056ffb3bc23583ea (diff) | |
| download | go-a88f093aaa35ae18aa02389624822101cbf231c0.tar.xz | |
strings,bytes: make benchmark work deterministic
It's hard to compare two different runs of a benchmark if they
are doing different amounts of work.
Change-Id: I5d6845f3d11bb10136f745e6207d5f683612276d
Reviewed-on: https://go-review.googlesource.com/c/go/+/672895
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'src/strings/strings_test.go')
| -rw-r--r-- | src/strings/strings_test.go | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/strings/strings_test.go b/src/strings/strings_test.go index d058ba7358..b10b5f05cc 100644 --- a/src/strings/strings_test.go +++ b/src/strings/strings_test.go @@ -1875,8 +1875,9 @@ func makeBenchInputHard() string { "hello", "world", } x := make([]byte, 0, 1<<20) + r := rand.New(rand.NewSource(99)) for { - i := rand.Intn(len(tokens)) + i := r.Intn(len(tokens)) if len(x)+len(tokens[i]) >= 1<<20 { break } @@ -1964,8 +1965,9 @@ func BenchmarkCountByte(b *testing.B) { var makeFieldsInput = func() string { x := make([]byte, 1<<20) // Input is ~10% space, ~10% 2-byte UTF-8, rest ASCII non-space. + r := rand.New(rand.NewSource(99)) for i := range x { - switch rand.Intn(10) { + switch r.Intn(10) { case 0: x[i] = ' ' case 1: @@ -1984,8 +1986,9 @@ var makeFieldsInput = func() string { var makeFieldsInputASCII = func() string { x := make([]byte, 1<<20) // Input is ~10% space, rest ASCII non-space. + r := rand.New(rand.NewSource(99)) for i := range x { - if rand.Intn(10) == 0 { + if r.Intn(10) == 0 { x[i] = ' ' } else { x[i] = 'x' |