Right, so we configured sending email. But it's not very interesting until we actually receive some notifications. Let's increase the load on our test system. In the console, launch the following:
$ cat /dev/urandom | md5sum
This grabs a pseudo random, never-ending character stream and calculates its MD5 checksum, so system load should increase as a result. You can observe the outcome as a graph—navigate to Monitoring | Latest data and click on Graph for our single item again.
Notice how the system load has climbed. If your test system can cope with such a process really well, it might not be enough—in such a case, you can try running multiple such MD5 checksum calculation processes simultaneously.
Allow 3 minutes
