[Python-Dev] Minor compilation problem on HP-UX (1.6b1) (fwd) (original) (raw)

Jack Jansen jack@oratrix.nl
Mon, 07 Aug 2000 14:27:59 +0200

_+ #ifdef hpux + mallopt (MMXFAST, 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).

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