webApp is container image to simulating CPU/Memory intensive or high latency workload.

This web app is built with apache httpd and php. It can simulate CPU intensive, Memory intensive, or High latency workload. It can accept Get or Post requests to simulate different level of workloads.

It also enables the mod_status of the httpd server, so that user can have a easier way to understand the workloads.

Build a docker image. (beekman9527/webapp is the image in dockerhub)

$ export imageName="webapp"
$ docker build -t $imageName .

First, run the container from the image.

# 28080 is host port.
$ docker run -d -p 28080:8080 $imageName

Second, access the web Page via:

http://hostIP:28080/index.html
or
http://localhost:28080/index.html

All the pages can be accessed via HTTP GET or POST, and the parameters are the same.

It has one parameter value, the duration to delay(or sleep in server side), in milliseconds.

For example, delay 30 ms. Access it via web browser

http://localhost:28080/workload.php/?value=30

Access it via curl Post

curl -H 'Content-Type: application/x-www-form-urlencoded' -X POST -d 'value=30' http://localhost:28080/workload.php

It has two parameters, memory is amount of memory (in MB) to consume; the other is value, the duration to hold the memory, in milliseconds.

For example, consume 10 MB memory, and hold the memory for 110 ms. Access it via web browser

http://localhost:28080/memwork.php/?value=110&memory=10

Access it via curl Post

curl -H 'Content-Type: application/x-www-form-urlencoded' -X POST -d 'value=110&memory=10' http://localhost:28080/memwork.php

It will use as much CPU as possible to compute the MD5 for huge amout of integers. It has one parameter, cpu, indicating the amount of computation.

Access it via web browser

http://localhost:28080/cpuwork.php/?cpu=30

Access it via curl Post

curl -H 'Content-Type: application/x-www-form-urlencoded' -X POST -d 'cpu=30' http://localhost:28080/cpuwork.php