This really depends on how heavy the processing would be, and how many parallel tasks would be there.

Of course, as a FUNCTIONALITY, Perl can provide the paralell processing you want, and there are actually even more than one solutions, but this does not necessary to make Perl the right choice. Perl is not there for heavy processing.

If speed is a must, and high-end paralell processing is a must, go c. Also, Perl modules intend to use more memory, which is a big drawback for parallel processing.

If you don't want to re-develop your application later, go straight, and pick the best tool, in this case, it is c.

Of course, you would lose all the good stuffs Perl can provide, for example regexp, rapid dev, etc., but trade off is everywhere in the IT world, so that is expected.