Simple Azure Blob Storage Performance (upload) testing

Azure Blob Storage Perf Testing Tool

This is a simple testing tool using Mocha that provides upload speed testing when modifying the parallelOperationThreadCount
setting that is available in the Azure Storage Nodejs tools.


Install Nodejs and npm for your environment

Review what says for your environment in order to get Nodejs and npm running.

Clone the repo

git clone
chdir blobTool
npm install

Run the mocha test

npm test

Review the package.json

This file will show what the script calls - this uses babel-core to polyfill ES6 support
and runnable on node >=10.x

  "name": "blobtool",
  "version": "1.0.0",
  "description": "Simple Blob upload check",
  "main": "app.js",
  "scripts": {
    "start": "node ./app.js",
    "test": "node ./node_modules/mocha/bin/mocha --compilers js:babel/register"
  "author": "shawn cicoria",
  "license": "ISC",
  "dependencies": {
    "azure-storage": "^0.5.0",
    "nconf": "^0.7.2",
    "node-uuid": "^1.4.3"
  "devDependencies": {
    "babel": "^5.8.23",
    "babel-core": "^5.8.24",
    "mocha": "^2.3.2",
    "performance-now": "^0.2.0",
    "qunit": "^0.7.6"


The config.1.json file needs to be updated to include your test container name, storage account name, and the storage key.

    "CONTAINER_NAME" : "<containername>",
    "STORAGE_NAME": "<storageaccount>",
    "STORAGE_KEY": "<key>"

Example test results

Below are some console output captures of results.
Note that for the most part anything above 2 parallel operations is really not helping. Perhaps 3. Note that the

service limit on Standard Storage is 60 MBS see this for more information.

The tests were run from East -> East 2 to hopefully accomplish eliminating things like my ISP’s stuff, keep it on the Azure backbone, but also from something other than the direct Region / Datacenter.

From local Mac

local mac

From an A2 machine

A2 in East to East2

From an A8 machine

A8 in East to East2