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- // Copyright (C) 2016 The Syncthing Authors.
- //
- // This Source Code Form is subject to the terms of the Mozilla Public
- // License, v. 2.0. If a copy of the MPL was not distributed with this file,
- // You can obtain one at https://mozilla.org/MPL/2.0/.
- package weakhash
- import (
- "os"
- "testing"
- "github.com/chmduquesne/rollinghash/adler32"
- )
- const testFile = "../model/testdata/~syncthing~file.tmp"
- const size = 128 << 10
- func BenchmarkFind1MFile(b *testing.B) {
- b.ReportAllocs()
- b.SetBytes(1 << 20)
- for i := 0; i < b.N; i++ {
- fd, err := os.Open(testFile)
- if err != nil {
- b.Fatal(err)
- }
- _, err = Find(fd, []uint32{0, 1, 2}, size)
- if err != nil {
- b.Fatal(err)
- }
- fd.Close()
- }
- }
- func BenchmarkWeakHashAdler32(b *testing.B) {
- data := make([]byte, size)
- hf := adler32.New()
- for i := 0; i < b.N; i++ {
- hf.Write(data)
- }
- _ = hf.Sum32()
- b.SetBytes(size)
- }
- func BenchmarkWeakHashAdler32Roll(b *testing.B) {
- data := make([]byte, size)
- hf := adler32.New()
- hf.Write(data)
- b.ResetTimer()
- for i := 0; i < b.N; i++ {
- for i := 0; i <= size; i++ {
- hf.Roll('a')
- }
- }
- b.SetBytes(size)
- }
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