How to generate a simulated load on an EC2 instance to test Auto Scaling Group / ASG
There are an lots of ways to create load, here is one (requires root):
dd if=/dev/zero of=/dev/null
This command will quickly use a lot of CPU.
Use control-c twice to kill. WARNING NEVER DO THIS TO AN EXISTING DEVICE
if = input file
of = output file
You can see in my example “of=/dev/null” – in other words write to a null device.
WARNING!!! NEVER set “of=’ TO AN EXISTING DEVICE – unless you want to wipe it out.