On Aug 11, 5:43 am, Seun Osewa <seun.os...@gmail.com> wrote:
> > I think I've heard Guido say the last attempt at removing the Global
> > Interpreter Lock (GIL) resulted in a Python that was much slower...
>
> What is it about Python that makes a thread-safe CPython version much
> slower? Why doesn'ttrue threading slow down other languages like Perl
> and Java?

I have no idea about Perl - but there's probably some hideous black
magic going on ;-)

As for Java, making code thread safe *does* slow down the code. It is
the very reason that the language designers made the collections API
non-thread safe by default (you have to wrap the standard collections
in a synchronised wrapper to make them thread safe).

--
Ant...