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use local random generator to avoid global lock

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This commit is contained in:
Chris Lu 2017-05-19 23:33:34 -07:00
parent 68e2dee2cd
commit 4ce6586710
1 changed files with 10 additions and 4 deletions
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14
weed/command/benchmark.go
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@ -201,9 +201,11 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
}()
}
random := rand.New(rand.NewSource(time.Now().UnixNano()))
for id := range idChan {
start := time.Now()
fileSize := int64(*b.fileSize + rand.Intn(64))
fileSize := int64(*b.fileSize + random.Intn(64))
fp := &operation.FilePart{Reader: &FakeReader{id: uint64(id), size: fileSize}, FileSize: fileSize}
ar := &operation.VolumeAssignRequest{
Count: 1,
@ -212,7 +214,7 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
if assignResult, err := operation.Assign(*b.server, ar); err == nil {
fp.Server, fp.Fid, fp.Collection = assignResult.Url, assignResult.Fid, *b.collection
if _, err := fp.Upload(0, *b.server, secret); err == nil {
if rand.Intn(100) < *b.deletePercentage {
if random.Intn(100) < *b.deletePercentage {
s.total++
delayedDeleteChan <- &delayedFile{time.Now().Add(time.Second), fp}
} else {
@ -239,6 +241,8 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
func readFiles(fileIdLineChan chan string, s *stat) {
defer wait.Done()
random := rand.New(rand.NewSource(time.Now().UnixNano()))
for fid := range fileIdLineChan {
if len(fid) == 0 {
continue
@ -258,7 +262,7 @@ func readFiles(fileIdLineChan chan string, s *stat) {
println("!!!! volume id ", vid, " location not found!!!!!")
continue
}
server := ret.Locations[rand.Intn(len(ret.Locations))].Url
server := ret.Locations[random.Intn(len(ret.Locations))].Url
url := "http://" + server + "/" + fid
if bytesRead, err := util.Get(url); err == nil {
s.completed++
@ -297,6 +301,8 @@ func readFileIds(fileName string, fileIdLineChan chan string) {
}
defer file.Close()
random := rand.New(rand.NewSource(time.Now().UnixNano()))
r := bufio.NewReader(file)
if *b.sequentialRead {
for {
@ -317,7 +323,7 @@ func readFileIds(fileName string, fileIdLineChan chan string) {
}
if len(lines) > 0 {
for i := 0; i < readStats.total; i++ {
fileIdLineChan <- lines[rand.Intn(len(lines))]
fileIdLineChan <- lines[random.Intn(len(lines))]
}
}
}