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randomize benchmark content
fix https://github.com/chrislusf/seaweedfs/issues/1294
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@ -227,7 +227,7 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
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start := time.Now()
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fileSize := int64(*b.fileSize + random.Intn(64))
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fp := &operation.FilePart{
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Reader: &FakeReader{id: uint64(id), size: fileSize},
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Reader: &FakeReader{id: uint64(id), size: fileSize, random: random},
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FileSize: fileSize,
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MimeType: "image/bench", // prevent gzip benchmark content
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}
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@ -552,6 +552,7 @@ func (s *stats) printStats() {
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type FakeReader struct {
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id uint64 // an id number
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size int64 // max bytes
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random *rand.Rand
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}
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func (l *FakeReader) Read(p []byte) (n int, err error) {
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@ -567,6 +568,7 @@ func (l *FakeReader) Read(p []byte) (n int, err error) {
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for i := 0; i < 8; i++ {
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p[i] = byte(l.id >> uint(i*8))
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}
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l.random.Read(p[8:])
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}
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l.size -= int64(n)
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return
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