Mojolicious uses IO::Poll for IO monitoring by default, but you can also take advantage of faster EVs. Mojolicious will automatically use EV for IO monitoring when EV is installed, improving performance. EVs can be installed just like any other CPAN module.
Make sure you can see the EV from Mojolicious.
If EV is installed as follows, it is successful.
CORE Perl (5.012003, linux) Mojolicious (2.09, Leaf Fluttering In Wind) OPTIONAL EV (4.03) IO::Socket::IP (not installed) IO::Socket::SSL (1.44) Net::Rendezvous::Publish (not installed)