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authorRastislav Szabo <raszabo@cisco.com>2017-07-07 12:36:17 +0200
committerRastislav Szabo <raszabo@cisco.com>2017-07-11 15:42:39 +0200
commit982b8703a757e5a91aa6451fd26593a065f8a452 (patch)
treed4f43a227ef789a04aa8bad9efa9ed71a417e646 /examples
parent2d07847237e754d9050f06f565baa430c70ed937 (diff)
added performance benchmark example
Change-Id: Ia0fea0569be3da7fadac9ef32d5f12c0b6de0089 Signed-off-by: Rastislav Szabo <raszabo@cisco.com>
Diffstat (limited to 'examples')
-rw-r--r--examples/cmd/perf-bench/perf-bench.go162
1 files changed, 162 insertions, 0 deletions
diff --git a/examples/cmd/perf-bench/perf-bench.go b/examples/cmd/perf-bench/perf-bench.go
new file mode 100644
index 0000000..e414b20
--- /dev/null
+++ b/examples/cmd/perf-bench/perf-bench.go
@@ -0,0 +1,162 @@
+// Copyright (c) 2017 Cisco and/or its affiliates.
+//
+// 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.
+
+// Binary simple-client is an example VPP management application that exercises the
+// govpp API on real-world use-cases.
+package main
+
+import (
+ "flag"
+ "fmt"
+ "log"
+ "os"
+ "sync"
+ "time"
+
+ "github.com/Sirupsen/logrus"
+ "github.com/pkg/profile"
+
+ "git.fd.io/govpp.git"
+ "git.fd.io/govpp.git/api"
+ "git.fd.io/govpp.git/core"
+ "git.fd.io/govpp.git/core/bin_api/vpe"
+)
+
+const (
+ defaultSyncRequestCount = 1000
+ defaultAsyncRequestCount = 1000000
+)
+
+func main() {
+ // parse optional flags
+ var sync, prof bool
+ var cnt int
+ flag.BoolVar(&sync, "sync", false, "run synchronous perf test")
+ flag.IntVar(&cnt, "cnt", 0, "count of requests to be sent to VPP")
+ flag.BoolVar(&prof, "prof", false, "generate profile data")
+ flag.Parse()
+
+ if cnt == 0 {
+ // no specific count defined - use defaults
+ if sync {
+ cnt = defaultSyncRequestCount
+ } else {
+ cnt = defaultAsyncRequestCount
+ }
+ }
+
+ if prof {
+ defer profile.Start().Stop()
+ }
+
+ // log only errors
+ core.SetLogger(&logrus.Logger{Level: logrus.ErrorLevel})
+
+ // connect to VPP
+ conn, err := govpp.Connect()
+ if err != nil {
+ log.Println("Error:", err)
+ os.Exit(1)
+ }
+ defer conn.Disconnect()
+
+ // create an API channel
+ ch, err := conn.NewAPIChannelBuffered(cnt, cnt)
+ if err != nil {
+ log.Println("Error:", err)
+ os.Exit(1)
+ }
+ defer ch.Close()
+
+ // run the test & measure the time
+ start := time.Now()
+
+ if sync {
+ // run synchronous test
+ syncTest(ch, cnt)
+ } else {
+ // run asynchronous test
+ asyncTest(ch, cnt)
+ }
+
+ elapsed := time.Since(start)
+ fmt.Println("Test took:", elapsed)
+ fmt.Printf("Requests per second: %.0f\n", float64(cnt)/elapsed.Seconds())
+}
+
+func syncTest(ch *api.Channel, cnt int) {
+ fmt.Printf("Running synchronous perf test with %d requests...\n", cnt)
+
+ for i := 0; i < cnt; i++ {
+ req := &vpe.ControlPing{}
+ reply := &vpe.ControlPingReply{}
+
+ err := ch.SendRequest(req).ReceiveReply(reply)
+ if err != nil {
+ log.Println("Error in reply:", err)
+ os.Exit(1)
+ }
+ }
+}
+
+func asyncTest(ch *api.Channel, cnt int) {
+ fmt.Printf("Running asynchronous perf test with %d requests...\n", cnt)
+
+ // start a new go routine that reads the replies
+ var wg sync.WaitGroup
+ wg.Add(1)
+ go readAsyncReplies(ch, cnt, &wg)
+
+ // send asynchronous requests
+ sendAsyncRequests(ch, cnt)
+
+ // wait until all replies are recieved
+ wg.Wait()
+}
+
+func sendAsyncRequests(ch *api.Channel, cnt int) {
+ for i := 0; i < cnt; i++ {
+ ch.ReqChan <- &api.VppRequest{
+ Message: &vpe.ControlPing{},
+ }
+ }
+}
+
+func readAsyncReplies(ch *api.Channel, expectedCnt int, wg *sync.WaitGroup) {
+ cnt := 0
+
+ for {
+ // receive a reply
+ reply := <-ch.ReplyChan
+ if reply.Error != nil {
+ log.Println("Error in reply:", reply.Error)
+ os.Exit(1)
+ }
+
+ // decode the message
+ msg := &vpe.ControlPingReply{}
+ err := ch.MsgDecoder.DecodeMsg(reply.Data, msg)
+ if reply.Error != nil {
+ log.Println("Error by decoding:", err)
+ os.Exit(1)
+ }
+
+ // count and return if done
+ cnt++
+ if cnt >= expectedCnt {
+ wg.Done()
+ return
+ }
+ }
+}