Slower than Python

[Russel Winder]

On Sat, 2013-03-02 at 16:55 +0100, John Colvin wrote:
[…]
> I'm not sure that's entirely fair. PyPy is fast because it 
> implements a JIT, not because it's written in RPython.

The second sentence is almost entirely true, the first I am not so sure.
Armin Rigo used to manage Psycho which was an amendment to the CPython
code base to include a JIT. He quit trying to keep that going and so
CPython doesn't have a JIT of any real importance. Unladen Swallow
dissapeared. The JIT framework is an integral part of RPython rather
than being specific only to PyPy.

The point is that for I/O bound systems all languages are more or less
equivalent, for computational intensive code, JITs are needed for
virtual machine based systems or they will not compete.

-- 
Russel.
=============================================================================
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel at winder.org.uk
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