func workerGetSetRand(client *memcache.Client, wg *sync.WaitGroup, ch <-chan int) { defer wg.Done() var item memcache.Item itemsCount := *requestsCount / *workersCount for _ = range ch { n := rand.Intn(itemsCount) item.Key = []byte(fmt.Sprintf("%s_%d", *key, n)) v := []byte(fmt.Sprintf("%s_%d", *value, n)) if rand.Float32() < 0.5 { err := client.Get(&item) if err == memcache.ErrCacheMiss { continue } if err != nil { log.Fatalf("Error in Client.Get(): [%s]", err) } if !bytes.Equal(item.Value, v) { log.Fatalf("Unexpected value=[%s] obtained. Expected [%s]", item.Value, v) } } else { item.Value = v if err := client.Set(&item); err != nil { log.Fatalf("Error in Client.Set(): [%s]", err) } } } }
func workerSet(client *memcache.Client, wg *sync.WaitGroup, ch <-chan int) { defer wg.Done() var item memcache.Item for i := range ch { item.Key = []byte(fmt.Sprintf("%s_%d", *key, i)) item.Value = []byte(fmt.Sprintf("%s_%d", *value, i)) if err := client.Set(&item); err != nil { log.Fatalf("Error in Client.Set(): [%s]", err) } } }
func workerGetMiss(client *memcache.Client, wg *sync.WaitGroup, ch <-chan int) { defer wg.Done() item := memcache.Item{ Key: []byte(*key), } for _ = range ch { if err := client.Get(&item); err != memcache.ErrCacheMiss { log.Fatalf("Error in Client.Get(): [%s]", err) } } }
func workerGetHit(client *memcache.Client, wg *sync.WaitGroup, ch <-chan int) { defer wg.Done() item := memcache.Item{ Key: []byte(*key), Value: []byte(*value), } valueOrig := item.Value item.Value = nil for _ = range ch { if err := client.Get(&item); err != nil { log.Fatalf("Error in Client.Get(): [%s]", err) } if !bytes.Equal(valueOrig, item.Value) { log.Fatalf("Unexpected value read=[%s]. Expected=[%s]", item.Value, valueOrig) } } }
func main() { flag.Parse() runtime.GOMAXPROCS(*goMaxProcs) client := memcache.Client{ ServerAddr: *serverAddr, ConnectionsCount: *connectionsCount, MaxPendingRequestsCount: *maxPendingRequestsCount, ReadBufferSize: *readBufferSize, WriteBufferSize: *writeBufferSize, OSReadBufferSize: *osReadBufferSize, OSWriteBufferSize: *osWriteBufferSize, } client.Start() defer client.Stop() fmt.Printf("Config:\n") fmt.Printf("serverAddr=[%s]\n", *serverAddr) fmt.Printf("connectionsCount=[%d]\n", *connectionsCount) fmt.Printf("goMaxProcs=[%d]\n", *goMaxProcs) fmt.Printf("key=[%s]\n", *key) fmt.Printf("maxPendingRequestsCount=[%d]\n", *maxPendingRequestsCount) fmt.Printf("osReadBufferSize=[%d]\n", *osReadBufferSize) fmt.Printf("osWriteBufferSize=[%d]\n", *osWriteBufferSize) fmt.Printf("requestsCount=[%d]\n", *requestsCount) fmt.Printf("readBufferSize=[%d]\n", *readBufferSize) fmt.Printf("value=[%s]\n", *value) fmt.Printf("workerMode=[%s]\n", *workerMode) fmt.Printf("workersCount=[%d]\n", *workersCount) fmt.Printf("writeBufferSize=[%d]\n", *writeBufferSize) fmt.Printf("\n") fmt.Printf("Preparing...") ch := make(chan int, *requestsCount) for i := 0; i < *requestsCount; i++ { ch <- i } close(ch) fmt.Printf("done\n") fmt.Printf("starting...") startTime := time.Now() wg := sync.WaitGroup{} defer func() { wg.Wait() duration := float64(time.Since(startTime)) / float64(time.Second) fmt.Printf("done! %.3f seconds, %.0f qps\n", duration, float64(*requestsCount)/duration) }() item := memcache.Item{ Key: []byte(*key), Value: []byte(*value), } worker := workerGetMiss switch *workerMode { case "GetHit": if err := client.Set(&item); err != nil { log.Fatalf("Error in Client.Set(): [%s]", err) } worker = workerGetHit case "GetMiss": if err := client.Delete(item.Key); err != nil && err != memcache.ErrCacheMiss { log.Fatalf("Cannot delete item with key=[%s]: [%s]", item.Key, err) } worker = workerGetMiss case "Set": worker = workerSet case "GetSetRand": worker = workerGetSetRand default: log.Fatalf("Unknown workerMode=[%s]", *workerMode) } for i := 0; i < *workersCount; i++ { wg.Add(1) go worker(&client, &wg, ch) } }