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

[Ivan Maidanski]

Hi all,

If think the same (ALL_INTERIOR_POINTERS slow down the performance of the benchmark).

I think -D ALL_INTERIOR_POINTERS should present by default when building the collector but the application which does not need pointers to objects' interiors be recognized should call GC_set_all_interior_pointers(0) at runtime before GC_INIT().

PS. The presence of NO_EXECUTE_PERMISSION should typically positively influence the speed, I think.

Regards.


Tue, 14 Dec 2010 14:19:03 +0100 ludo at gnu.org (Ludovic CourtХs):

> Hi,
> 
> Manuel.Serrano at inria.fr writes:
> 
> >  Without -DNO_EXECUTE_PERMISSION -DALL_INTERIOR_POINTERS
> > -DATOMIC_UNCOLLECTABLE here is what we get:
> 
> I'd think that only ALL_INTERIOR_POINTERS can have an impact here.
> Can you confirm?
> 
> Also, disabling it at run-time with  GC_all_interior_pointers = 0'
> should give the same result.
> 
> Thanks,
> Ludo'.
> 
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