Re^2: To Fork or Not to Fork (bottle necks)

[pimperator]

Thank you for the detailed reply. To clarify, my code sends a command to the system to convert a large file into a larger file using another program. Because there is no I/O, it would be advantageous to use Parallel::ForkManager.

But when I open each file and read them, it's better to do it in a serial fashion.

[tye]

Because there is no I/O

It is true that your Perl script isn't doing the I/O, but it is very much not true that "there is no I/O".

Whether Perl is doing the I/O or computing vs. some other program doing it has little bearing on the performance impact of having Perl fork() so you can have more than 1 instance running at once.