Jack Jansen wrote:
>
>
> > + #ifdef __hpux
> > + mallopt (M_MXFAST, 512);
> > + #endif /* __hpux */
> > +
>
> After reading this I went off and actually _read_ the mallopt manpage for the
> first time in my life, and it seems there's quite a few parameters there we
> might want to experiment with. Besides the M_MXFAST there's also M_GRAIN,
> M_BLKSIZ, M_MXCHK and M_FREEHD that could have significant impact on Python
> performance. I know that all the tweaks and tricks I did in the MacPython
> malloc implementation resulted in a speedup of 20% or more (including the
> cache-aligment code in dictobject.c).
To start with, try the optional object malloc I uploaded yestedray at SF.
[Patch #101104]
Tweaking mallopt and getting 20% speedup for some scripts is no surprise
at all. For me <wink>. It is not portable though.
--
Vladimir MARANGOZOV | Vladimir.Marangozov@inrialpes.fr
http://sirac.inrialpes.fr/~marangoz | tel:(+33-4)76615277 fax:76615252
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