github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/test/benchmarks/tools/hey.go (about)

     1  // Copyright 2020 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package tools
    16  
    17  import (
    18  	"fmt"
    19  	"net"
    20  	"regexp"
    21  	"strconv"
    22  	"testing"
    23  )
    24  
    25  // Hey is for the client application 'hey'.
    26  type Hey struct {
    27  	Requests    int // Note: requests cannot be less than concurrency.
    28  	Concurrency int
    29  	Doc         string
    30  }
    31  
    32  // MakeCmd returns a 'hey' command.
    33  func (h *Hey) MakeCmd(ip net.IP, port int) []string {
    34  	c := h.Concurrency
    35  	if c > h.Requests {
    36  		c = h.Requests
    37  	}
    38  	return []string{
    39  		"hey",
    40  		"-n", fmt.Sprintf("%d", h.Requests),
    41  		"-c", fmt.Sprintf("%d", c),
    42  		fmt.Sprintf("http://%s:%d/%s", ip.String(), port, h.Doc),
    43  	}
    44  }
    45  
    46  // Report parses output from 'hey' and reports metrics.
    47  func (h *Hey) Report(b *testing.B, output string) {
    48  	b.Helper()
    49  	requests, err := h.parseRequestsPerSecond(output)
    50  	if err != nil {
    51  		b.Fatalf("failed to parse requests per second: %v", err)
    52  	}
    53  	ReportCustomMetric(b, requests, "requests_per_second" /*metric name*/, "QPS" /*unit*/)
    54  
    55  	ave, err := h.parseAverageLatency(output)
    56  	if err != nil {
    57  		b.Fatalf("failed to parse average latency: %v", err)
    58  	}
    59  	ReportCustomMetric(b, ave, "average_latency" /*metric name*/, "s" /*unit*/)
    60  }
    61  
    62  var heyReqPerSecondRE = regexp.MustCompile(`Requests/sec:\s*(\d+\.?\d+?)\s+`)
    63  
    64  // parseRequestsPerSecond finds requests per second from 'hey' output.
    65  func (h *Hey) parseRequestsPerSecond(data string) (float64, error) {
    66  	match := heyReqPerSecondRE.FindStringSubmatch(data)
    67  	if len(match) < 2 {
    68  		return 0, fmt.Errorf("failed get bandwidth: %s", data)
    69  	}
    70  	return strconv.ParseFloat(match[1], 64)
    71  }
    72  
    73  var heyAverageLatencyRE = regexp.MustCompile(`Average:\s*(\d+\.?\d+?)\s+secs`)
    74  
    75  // parseHeyAverageLatency finds Average Latency in seconds form 'hey' output.
    76  func (h *Hey) parseAverageLatency(data string) (float64, error) {
    77  	match := heyAverageLatencyRE.FindStringSubmatch(data)
    78  	if len(match) < 2 {
    79  		return 0, fmt.Errorf("failed get average latency match%d : %s", len(match), data)
    80  	}
    81  	return strconv.ParseFloat(match[1], 64)
    82  }