[Python-Dev] Activating pymalloc

2002年3月14日 11:04:46 -0500

> "Martin v. Loewis" wrote:
> > 
> > I just performed some benchmark of pymalloc, compared to glibc 2.2
> > malloc, using xmlproc (a pure-Python XML parser) as the sample
> > application. On an artificial input document, the standard
> > configuration ran 16.3s; the configuration with pymalloc ran 15s.
> > 
> > I recommend to enable pymalloc by default; I can commit the necessary
> > changes if desired.

+1
[MAL]
> AFAIK, pymalloc still has problems with threading, so I unless this
> has already been resolved, I don't think it's a good idea to
> enable it by default just yet (since threads are enabled per default
> too).

The threading problems are a myth. Pymalloc relies on the GIL, yes,
but it is only invoked when the GIL is held.
Some extensions will break because they don't use the right
alloc/dealloc macros (we just fixed a few of these in Zope), but I
agree with others that alpha time is a good time to start fortcing
this issue. A big warning in NEWS might be useful.
--Guido van Rossum (home page: http://www.python.org/~guido/)