> Even with fork "do" is still much faster.

Hmm... the whole picture might be more complicated.

I just remembered that modern OS optimize the fork with a copy-on-write of the process' space.

This means while the start of the fork might be very fast, it can slow down as soon as changes occur.

OTOH this could also mean that large parts of the engine don't need to be physically copied, because they are static and no write is possible.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^3: Use of do() to run lots of perl scripts by LanX
in thread Use of do() to run lots of perl scripts by chrestomanci

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