Slower than Python

[H. S. Teoh]

On Sat, Mar 02, 2013 at 12:02:08PM -0800, Walter Bright wrote:
> On 3/2/2013 11:42 AM, Russel Winder wrote:
> >On Sat, 2013-03-02 at 11:30 -0800, Walter Bright wrote:
> >>On 3/2/2013 7:43 AM, Russel Winder wrote:
> >>>For writing interpreters, RPython spanks C.
> >>
> >>What's RPython doing that makes it faster?
> >
> >Allowing PyPy to have a good JIT compiler.
> 
> I don't understand. Does that JIT generate faster code than a C
> compiler would generate?

I don't know, but my wild guess is that a JIT optimizes the *right*
hotspots based on real-time performance measurements, whereas a lot of C
programmers are obsessed with optimizing what they *think* are the
hotspots, but which really aren't.


T

-- 
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