How to stress-test a CPU on a Linux server

In some cases, you may want to voluntarily stress-test the CPU of a Linux server to see what happens (monitoring stuff for example). Method First, create a file on your hard drive with the following command: dd if=/dev/urandom of=testfile count=20 bs=1024k Next, create a shell script with a md5sum loop as below, and named it "stress_cpu": #!/bin/sh i=0 while [ 1 ] do md5sum testfile i=`expr $i + 1` echo "Iteration: $i" done Make the script executable : chmod +x stress_cpu Then, you just need to execute it and your CPU load will increase instantly. ./stress_cpu Ctrl-C will end it, as always. ...