update vendor

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>

vendor/google.golang.org/grpc/benchmark/client/main.go

@@ -0,0 +1,187 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"runtime"
+	"runtime/pprof"
+	"sync"
+	"time"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/benchmark"
+	testpb "google.golang.org/grpc/benchmark/grpc_testing"
+	"google.golang.org/grpc/benchmark/stats"
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/internal/syscall"
+)
+
+var (
+	port      = flag.String("port", "50051", "Localhost port to connect to.")
+	numRPC    = flag.Int("r", 1, "The number of concurrent RPCs on each connection.")
+	numConn   = flag.Int("c", 1, "The number of parallel connections.")
+	warmupDur = flag.Int("w", 10, "Warm-up duration in seconds")
+	duration  = flag.Int("d", 60, "Benchmark duration in seconds")
+	rqSize    = flag.Int("req", 1, "Request message size in bytes.")
+	rspSize   = flag.Int("resp", 1, "Response message size in bytes.")
+	rpcType   = flag.String("rpc_type", "unary",
+		`Configure different client rpc type. Valid options are:
+		   unary;
+		   streaming.`)
+	testName = flag.String("test_name", "", "Name of the test used for creating profiles.")
+	wg       sync.WaitGroup
+	hopts    = stats.HistogramOptions{
+		NumBuckets:   2495,
+		GrowthFactor: .01,
+	}
+	mu    sync.Mutex
+	hists []*stats.Histogram
+)
+
+func main() {
+	flag.Parse()
+	if *testName == "" {
+		grpclog.Fatalf("test_name not set")
+	}
+	req := &testpb.SimpleRequest{
+		ResponseType: testpb.PayloadType_COMPRESSABLE,
+		ResponseSize: int32(*rspSize),
+		Payload: &testpb.Payload{
+			Type: testpb.PayloadType_COMPRESSABLE,
+			Body: make([]byte, *rqSize),
+		},
+	}
+	connectCtx, connectCancel := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
+	defer connectCancel()
+	ccs := buildConnections(connectCtx)
+	warmDeadline := time.Now().Add(time.Duration(*warmupDur) * time.Second)
+	endDeadline := warmDeadline.Add(time.Duration(*duration) * time.Second)
+	cf, err := os.Create("/tmp/" + *testName + ".cpu")
+	if err != nil {
+		grpclog.Fatalf("Error creating file: %v", err)
+	}
+	defer cf.Close()
+	pprof.StartCPUProfile(cf)
+	cpuBeg := syscall.GetCPUTime()
+	for _, cc := range ccs {
+		runWithConn(cc, req, warmDeadline, endDeadline)
+	}
+	wg.Wait()
+	cpu := time.Duration(syscall.GetCPUTime() - cpuBeg)
+	pprof.StopCPUProfile()
+	mf, err := os.Create("/tmp/" + *testName + ".mem")
+	if err != nil {
+		grpclog.Fatalf("Error creating file: %v", err)
+	}
+	defer mf.Close()
+	runtime.GC() // materialize all statistics
+	if err := pprof.WriteHeapProfile(mf); err != nil {
+		grpclog.Fatalf("Error writing memory profile: %v", err)
+	}
+	hist := stats.NewHistogram(hopts)
+	for _, h := range hists {
+		hist.Merge(h)
+	}
+	parseHist(hist)
+	fmt.Println("Client CPU utilization:", cpu)
+	fmt.Println("Client CPU profile:", cf.Name())
+	fmt.Println("Client Mem Profile:", mf.Name())
+}
+
+func buildConnections(ctx context.Context) []*grpc.ClientConn {
+	ccs := make([]*grpc.ClientConn, *numConn)
+	for i := range ccs {
+		ccs[i] = benchmark.NewClientConnWithContext(ctx, "localhost:"+*port, grpc.WithInsecure(), grpc.WithBlock())
+	}
+	return ccs
+}
+
+func runWithConn(cc *grpc.ClientConn, req *testpb.SimpleRequest, warmDeadline, endDeadline time.Time) {
+	for i := 0; i < *numRPC; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			caller := makeCaller(cc, req)
+			hist := stats.NewHistogram(hopts)
+			for {
+				start := time.Now()
+				if start.After(endDeadline) {
+					mu.Lock()
+					hists = append(hists, hist)
+					mu.Unlock()
+					return
+				}
+				caller()
+				elapsed := time.Since(start)
+				if start.After(warmDeadline) {
+					hist.Add(elapsed.Nanoseconds())
+				}
+			}
+		}()
+	}
+}
+
+func makeCaller(cc *grpc.ClientConn, req *testpb.SimpleRequest) func() {
+	client := testpb.NewBenchmarkServiceClient(cc)
+	if *rpcType == "unary" {
+		return func() {
+			if _, err := client.UnaryCall(context.Background(), req); err != nil {
+				grpclog.Fatalf("RPC failed: %v", err)
+			}
+		}
+	}
+	stream, err := client.StreamingCall(context.Background())
+	if err != nil {
+		grpclog.Fatalf("RPC failed: %v", err)
+	}
+	return func() {
+		if err := stream.Send(req); err != nil {
+			grpclog.Fatalf("Streaming RPC failed to send: %v", err)
+		}
+		if _, err := stream.Recv(); err != nil {
+			grpclog.Fatalf("Streaming RPC failed to read: %v", err)
+		}
+	}
+}
+
+func parseHist(hist *stats.Histogram) {
+	fmt.Println("qps:", float64(hist.Count)/float64(*duration))
+	fmt.Printf("Latency: (50/90/99 %%ile): %v/%v/%v\n",
+		time.Duration(median(.5, hist)),
+		time.Duration(median(.9, hist)),
+		time.Duration(median(.99, hist)))
+}
+
+func median(percentile float64, h *stats.Histogram) int64 {
+	need := int64(float64(h.Count) * percentile)
+	have := int64(0)
+	for _, bucket := range h.Buckets {
+		count := bucket.Count
+		if have+count >= need {
+			percent := float64(need-have) / float64(count)
+			return int64((1.0-percent)*bucket.LowBound + percent*bucket.LowBound*(1.0+hopts.GrowthFactor))
+		}
+		have += bucket.Count
+	}
+	panic("should have found a bound")
+}