How to create a CPU spike with a bash command

Question

I want to create a near 100% load on a Linux machine. It\'s quad core system and I want all cores going full speed. Ideally, the CPU load would last a designated amount of

Answer 1

Here is a program that you can download Here

Install easily on your Linux system

./configure
make
make install

and launch it in a simple command line

stress -c 40

to stress all your CPUs (however you have) with 40 threads each running a complex sqrt computation on a ramdomly generated numbers.

You can even define the timeout of the program

stress -c 40 -timeout 10s

unlike the proposed solution with the dd command, which deals essentially with IO and therefore doesn't really overload your system because working with data.

The stress program really overloads the system because dealing with computation.