Post, Get, Multipart Request Examples for WRK Http Benchmark tool

To use the wrk application, information is given for wrk ubuntu installation and installation as a docker container.This repository contains a sample lua script that shows you how to use lua script with wrk. With the help of the sample script you can make multipart and post requests with wrk.

Installation of wrk on Ubuntu

  sudo apt-get install build-essential libssl-dev git -y

  git clone https://github.com/wg/wrk.git wrk

  cd wrk

  sudo make

Move the executable to somewhere in your PATH, ex:

  sudo cp wrk /usr/local/bin

Usage

git clone https://github.com/Bariskau/wrk-http-benchmark-lua-script-example.git

cd wrk-http-benchmark-lua-script-example

wrk -t4 -c50 -d10s -s post.lua http://127.0.0.1:8080/index.html

Can get method value with env

env method="get" \ 
wrk -t4 -c50 -d10s -s post.lua \
http://127.0.0.1:8080/index.html

Usage with Docker

docker build -f Dockerfile -t wrk-example .

docker run --rm -e method="get" wrk-example:latest -t1 -c1 -d5s -s post.lua

You can add volume to update your files and lua script content

docker run --rm -v $(pwd):/data/ wrk-example:latest -t1 -c1 -d5s -s post.lua

Example Multipart Request

multipartRequest = function()
    local imgPath = "./lena_gray.jpeg"
    local file = io.open(imgPath, "rb")
    local image = file:read("*all")
    file:close()

    local headers = {
        ["Accept"] = "application/json",
        ["Content-Type"] = "multipart/form-data; boundary=----WebKitFormBoundaryG03anzeS7UA26gFA",
    }

    local imagePart = "------WebKitFormBoundaryG03anzeS7UA26gFA\r\n" ..
            "Content-Disposition: form-data; name=\"image\"; filename=\"lena_gray.jpeg\"\r\n" ..
            "Content-Type: image/jpeg\r\n\r\n" ..
            image .. "\r\n"

    local namePart = "------WebKitFormBoundaryG03anzeS7UA26gFA\r\n" ..
            "Content-Disposition: form-data; name=\"name\"\r\n\r\n" ..
            "john\r\n"

    local surnamePart = "------WebKitFormBoundaryG03anzeS7UA26gFA\r\n" ..
            "Content-Disposition: form-data; name=\"surname\"\r\n\r\n" ..
            "doe\r\n"

    local body = imagePart .. namePart .. surnamePart ..
            "------WebKitFormBoundaryG03anzeS7UA26gFA--\r\n"

    return wrk.format("POST", "/api/v1/add-photo", headers, body)
end

Wrk parameters

-s = Lua Script
-c = Connection
-t = Thread
-d10s = Second

When a browser is assumed to open only one connection, 50 connections can be thought of as 50 "users." The total number of connections (-c50) is distributed equally among threads (-t4). Generally, the number of threads should be equal to the number of CPU cores that wrk is intended to use.