mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
114 lines
3.0 KiB
Go
114 lines
3.0 KiB
Go
// Copyright 2015 Nippon Telegraph and Telephone Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmd
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import (
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"crypto/rand"
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"fmt"
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"os"
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"time"
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"github.com/coreos/etcd/Godeps/_workspace/src/github.com/spf13/cobra"
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"github.com/coreos/etcd/lease"
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)
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// storagePutCmd represents a storage put performance benchmarking tool
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var storagePutCmd = &cobra.Command{
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Use: "put",
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Short: "Benchmark put performance of storage",
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Run: storagePutFunc,
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}
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var (
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totalNrKeys int
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storageKeySize int
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valueSize int
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txn bool
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)
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func init() {
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storageCmd.AddCommand(storagePutCmd)
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storagePutCmd.Flags().IntVar(&totalNrKeys, "total", 100, "a total number of keys to put")
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storagePutCmd.Flags().IntVar(&storageKeySize, "key-size", 64, "a size of key (Byte)")
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storagePutCmd.Flags().IntVar(&valueSize, "value-size", 64, "a size of value (Byte)")
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storagePutCmd.Flags().BoolVar(&txn, "txn", false, "put a key in transaction or not")
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}
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func createBytesSlice(bytesN, sliceN int) [][]byte {
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rs := make([][]byte, sliceN)
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for i := range rs {
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rs[i] = make([]byte, bytesN)
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if _, err := rand.Read(rs[i]); err != nil {
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panic(err)
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}
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}
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return rs
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}
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func storagePutFunc(cmd *cobra.Command, args []string) {
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keys := createBytesSlice(storageKeySize, totalNrKeys)
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vals := createBytesSlice(valueSize, totalNrKeys)
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latencies := make([]time.Duration, totalNrKeys)
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minLat := time.Duration(1<<63 - 1)
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maxLat := time.Duration(0)
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for i := 0; i < totalNrKeys; i++ {
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begin := time.Now()
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if txn {
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id := s.TxnBegin()
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if _, err := s.TxnPut(id, keys[i], vals[i], lease.NoLease); err != nil {
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fmt.Errorf("txn put error: %v", err)
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os.Exit(1)
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}
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s.TxnEnd(id)
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} else {
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s.Put(keys[i], vals[i], lease.NoLease)
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}
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end := time.Now()
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lat := end.Sub(begin)
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latencies[i] = lat
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if maxLat < lat {
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maxLat = lat
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}
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if lat < minLat {
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minLat = lat
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}
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}
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total := time.Duration(0)
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for _, lat := range latencies {
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total += lat
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}
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fmt.Printf("total: %v\n", total)
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fmt.Printf("average: %v\n", total/time.Duration(totalNrKeys))
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fmt.Printf("rate: %4.4f\n", float64(totalNrKeys)/total.Seconds())
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fmt.Printf("minimum latency: %v\n", minLat)
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fmt.Printf("maximum latency: %v\n", maxLat)
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// TODO: Currently this benchmark doesn't use the common histogram infrastructure.
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// This is because an accuracy of the infrastructure isn't suitable for measuring
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// performance of kv storage:
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// https://github.com/coreos/etcd/pull/4070#issuecomment-167954149
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}
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