[Gc] Re: Fwd: Performance of bdwgc7.2 had degraded compared to 6.8 - the patch to test

Ludovic Courtès ludo at gnu.org
Tue Dec 7 07:24:23 PST 2010


Hello,

Manuel.Serrano at inria.fr writes:

> Could the differences in the compilation options be the reason for the
> performance slowdown? In particular, what's the impact of
> -DALL_INTERIOR_POINTERS=1?

All-interior-pointers can increase execution time and/or heap size in my
experience.  Note that it can also be turned on/off at run time, by
setting ‘GC_all_interior_pointers’ before any call to GC_INIT.

Did you measure the impact of all-interior-pointers?

Thanks,
Ludo’.



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