This is just a quick post because it came to my attention today that many do not know about the cpuwatch command included within cPanel to assist with running commands that cause intense server load. The use is as follows:
/usr/local/cpanel/bin/cpuwatch LOADAVG COMMAND
As an example would be:
/usr/local/cpanel/bin/cpuwatch 8 cp -r /home/username/public_html/* /home2/username/public_html/
This would run the cp command but ensure that the load does not rise above 8. If it did, the command would pause until the load decreased then start again. I highly suggest using this in all situations where load averages are varying and complex commands are being run during prime time.
Let me know if you have any questions on this in the comments.