How do I stress test CPU and RAM (at the same time)?

I've searched the net and came across the Ubuntu wiki saying

stress-ng --matrix 0

is supposed the best. But there are dedicated stressors for CPU and RAM (looking at man).

Any ideas which one is the best to use? Thank you

1 Answer

You can install stress with:

sudo apt install stress

Then call it with:

stress --cpu 8 --io 4 --vm 4 --vm-bytes 1024M --timeout 10s

On my conky display notice how:

• In the top section CPU utilization spikes from 3% to 100%
• In the middle the temperature spikes from 60C to 80C
• At the bottom memory spikes from normal 2.75 GiB to 6.25 GiB

Type stress --help for a full list of options.

A commentator requested posting the entire conky script which I did here: conky transparent