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218 lines
5.8 KiB
218 lines
5.8 KiB
package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"os"
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"strings"
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"time"
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"github.com/go-kit/kit/log/term"
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metrics "github.com/rcrowley/go-metrics"
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"text/tabwriter"
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tmrpc "github.com/tendermint/tendermint/rpc/client"
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"github.com/tendermint/tmlibs/log"
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)
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var version = "0.3.0"
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var logger = log.NewNopLogger()
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type statistics struct {
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TxsThroughput metrics.Histogram `json:"txs_per_sec"`
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BlocksThroughput metrics.Histogram `json:"blocks_per_sec"`
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}
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func main() {
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var duration, txsRate, connections int
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var verbose bool
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var outputFormat, broadcastTxMethod string
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flag.IntVar(&connections, "c", 1, "Connections to keep open per endpoint")
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flag.IntVar(&duration, "T", 10, "Exit after the specified amount of time in seconds")
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flag.IntVar(&txsRate, "r", 1000, "Txs per second to send in a connection")
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flag.StringVar(&outputFormat, "output-format", "plain", "Output format: plain or json")
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flag.StringVar(&broadcastTxMethod, "broadcast-tx-method", "async", "Broadcast method: async (no guarantees; fastest), sync (ensures tx is checked) or commit (ensures tx is checked and committed; slowest)")
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flag.BoolVar(&verbose, "v", false, "Verbose output")
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flag.Usage = func() {
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fmt.Println(`Tendermint blockchain benchmarking tool.
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Usage:
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tm-bench [-c 1] [-T 10] [-r 1000] [endpoints] [-output-format <plain|json> [-broadcast-tx-method <async|sync|commit>]]
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Examples:
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tm-bench localhost:46657`)
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fmt.Println("Flags:")
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flag.PrintDefaults()
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}
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flag.Parse()
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if flag.NArg() == 0 {
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flag.Usage()
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os.Exit(1)
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}
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if verbose {
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if outputFormat == "json" {
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fmt.Fprintln(os.Stderr, "Verbose mode not supported with json output.")
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os.Exit(1)
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}
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// Color errors red
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colorFn := func(keyvals ...interface{}) term.FgBgColor {
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for i := 1; i < len(keyvals); i += 2 {
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if _, ok := keyvals[i].(error); ok {
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return term.FgBgColor{Fg: term.White, Bg: term.Red}
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}
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}
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return term.FgBgColor{}
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}
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logger = log.NewTMLoggerWithColorFn(log.NewSyncWriter(os.Stdout), colorFn)
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fmt.Printf("Running %ds test @ %s\n", duration, flag.Arg(0))
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}
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if broadcastTxMethod != "async" && broadcastTxMethod != "sync" && broadcastTxMethod != "commit" {
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fmt.Fprintln(os.Stderr, "broadcast-tx-method should be either 'sync', 'async' or 'commit'.")
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os.Exit(1)
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}
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endpoints := strings.Split(flag.Arg(0), ",")
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client := tmrpc.NewHTTP(endpoints[0], "/websocket")
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minHeight := latestBlockHeight(client)
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logger.Info("Latest block height", "h", minHeight)
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// record time start
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timeStart := time.Now()
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logger.Info("Time started", "t", timeStart)
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transacters := startTransacters(endpoints, connections, txsRate, "broadcast_tx_"+broadcastTxMethod)
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select {
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case <-time.After(time.Duration(duration) * time.Second):
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for _, t := range transacters {
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t.Stop()
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}
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timeStop := time.Now()
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logger.Info("Time stopped", "t", timeStop)
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stats := calculateStatistics(client, minHeight, timeStart, timeStop)
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printStatistics(stats, outputFormat)
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return
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}
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}
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func latestBlockHeight(client tmrpc.Client) int64 {
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status, err := client.Status()
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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return status.SyncInfo.LatestBlockHeight
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}
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func calculateStatistics(client tmrpc.Client, minHeight int64, timeStart, timeStop time.Time) *statistics {
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stats := &statistics{
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BlocksThroughput: metrics.NewHistogram(metrics.NewUniformSample(1000)),
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TxsThroughput: metrics.NewHistogram(metrics.NewUniformSample(1000)),
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}
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// get blocks between minHeight and last height
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info, err := client.BlockchainInfo(minHeight, 0)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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numBlocksPerSec := make(map[int64]int64)
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numTxsPerSec := make(map[int64]int64)
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for _, blockMeta := range info.BlockMetas {
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// check if block was created after timeStart
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if blockMeta.Header.Time.Before(timeStart) {
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continue
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}
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// check if block was created before timeStop
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if blockMeta.Header.Time.After(timeStop) {
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break
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}
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sec := secondsSinceTimeStart(timeStart, blockMeta.Header.Time)
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// increase number of blocks for that second
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if _, ok := numBlocksPerSec[sec]; !ok {
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numBlocksPerSec[sec] = 0
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}
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numBlocksPerSec[sec]++
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// increase number of txs for that second
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if _, ok := numTxsPerSec[sec]; !ok {
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numTxsPerSec[sec] = 0
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}
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numTxsPerSec[sec] += blockMeta.Header.NumTxs
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}
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for _, n := range numBlocksPerSec {
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stats.BlocksThroughput.Update(n)
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}
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for _, n := range numTxsPerSec {
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stats.TxsThroughput.Update(n)
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}
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return stats
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}
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func secondsSinceTimeStart(timeStart, timePassed time.Time) int64 {
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return int64(timePassed.Sub(timeStart).Seconds())
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}
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func startTransacters(endpoints []string, connections, txsRate int, broadcastTxMethod string) []*transacter {
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transacters := make([]*transacter, len(endpoints))
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for i, e := range endpoints {
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t := newTransacter(e, connections, txsRate, broadcastTxMethod)
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t.SetLogger(logger)
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if err := t.Start(); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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transacters[i] = t
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}
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return transacters
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}
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func printStatistics(stats *statistics, outputFormat string) {
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if outputFormat == "json" {
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result, err := json.Marshal(struct {
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TxsThroughput float64 `json:"txs_per_sec_avg"`
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BlocksThroughput float64 `json:"blocks_per_sec_avg"`
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}{stats.TxsThroughput.Mean(), stats.BlocksThroughput.Mean()})
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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fmt.Println(string(result))
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} else {
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w := tabwriter.NewWriter(os.Stdout, 0, 0, 5, ' ', 0)
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fmt.Fprintln(w, "Stats\tAvg\tStdDev\tMax\t")
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fmt.Fprintln(w, fmt.Sprintf("Txs/sec\t%.0f\t%.0f\t%d\t",
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stats.TxsThroughput.Mean(),
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stats.TxsThroughput.StdDev(),
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stats.TxsThroughput.Max()))
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fmt.Fprintln(w, fmt.Sprintf("Blocks/sec\t%.3f\t%.3f\t%d\t",
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stats.BlocksThroughput.Mean(),
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stats.BlocksThroughput.StdDev(),
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stats.BlocksThroughput.Max()))
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w.Flush()
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}
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}
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