Bombardier is a nice HTTP(S) benchmarking tool, written in Go language, for software performance testers.

Preparation

# install git and curl packages
$ sudo apt install -y curl git

# download go (do not install from Debian)
$ curl -O https://storage.googleapis.com/golang/go1.8.linux-amd64.tar.gz

# unzip archive
$ tar xvf go1.8.linux-amd64.tar.gz

# set owner and group (recursive)
$ sudo chown -R root:root go

# move all into target directory
$ sudo mv go /usr/local/

Configure go (for user)

# create hidden go directory
$ mkdir ~/.go

# configure needed paths (inside .bashrc)
$ echo "GOPATH=$HOME/.go" >> ~/.bashrc
$ echo "export GOPATH" >> ~/.bashrc
$ echo "PATH=\$PATH:/usr/local/go/bin:\$GOPATH/bin" >> ~/.bashrc

# reload
$ source ~/.bashrc

# check go version
$ go version
go version go1.8 linux/amd64

Install bombardier

# install packages from github
$ go get -u github.com/codesenberg/bombardier

# show bombardier help
$ bombardier --help

Usage/Examples

# run with 5 connections on 10 sec.
$ bombardier -c 5 -k https://www.heise.de
...
Statistics        Avg      Stdev        Max
  Reqs/sec        32.44      37.83        201
  Latency      152.35ms    72.93ms      1.24s
  HTTP codes:
    1xx - 0, 2xx - 329, 3xx - 0, 4xx - 0, 5xx - 0
    others - 0
  Throughput:     6.18MB/s
...

# run with 10 connections on 5 sec and show latency statistics.
$ bombardier -d 5s -c 10 -l -k https://www.heise.de
...
Statistics        Avg      Stdev        Max
  Reqs/sec        56.51      59.10        251
  Latency      173.10ms   102.95ms      1.32s
  Latency Distribution
     50%   155.83ms
     75%   164.06ms
     90%   174.99ms
     99%   542.91ms
  HTTP codes:
    1xx - 0, 2xx - 294, 3xx - 0, 4xx - 0, 5xx - 0
    others - 0
  Throughput:    10.63MB/s
...