cpu workload simulator to test WLM

[Tim Nelson]

Attempting to configure WLM and create enough CPU load to see it work.

Does anyone know of a good CPU load simulator or some easy way to generate a lot of CPU load on a system ? I can putz around until I get some looping script to work but wondering if there was a better solution ?

Thanks !!

[Pete Randall]

Try multiple find commands like this:

find / -exec grep -l 'foobar' {} \ ; &


Pete

[Tim Nelson]

Thanks Pete but it seems that only jams up IO and memory (temporarily on mem).

Tim

[Bill Hassell · Accepted solution]

Perhaps the shortest shell script to produce 100% CPU usage:

while :
do
:
done

Run this as manu times as you need. Each copy will run in a different CPU and will not stop until you kill each subshell. Put them into the background if desired.

[Bill Hassell]

Perhaps the shortest shell script to produce 100% CPU usage:

while :
do
:
done

Run this as many times as you need. Each copy will run in a different CPU and will not stop until you kill each subshell. Put them into the background if desired.

[Tim Nelson]

You will not believe this but that was my first thought but I discounted it due to the null action.

Guess I should try first before I ask.

Four of those pegged out 4 processors immediatly.

Thanks Bill your input on this and every forum question seems to be right on the $$ !!!
20 points as your answer is there twice :)