Enable concurrent booting (Ubuntu)

Concurrent booting takes advantage of dual-core processors and CPUs that feature hyperthreading. To set this up, edit the “rc” file in the /etc/init.d directory:

sudo mousepad /etc/init.d/rc

Find the line that says CONCURRENCY=none and change it to:

CONCURRENCY=shell

Save the file.

There are many more Ubuntu tweaks out there. I’ve included links to the source of most of the information here. Many of the articles below include other tweaks that seemed a bit too risky to try. Always exercise caution when editing configuration files.

warning:- untested