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Re: [PATCH] Enable init_ggc_heuristics for ENABLE_GC_CHECKING.
On Tue, Nov 19, 2019 at 9:12 AM Martin Liška <mliska@suse.cz> wrote:
>
> One potential improvement is to enable the heuristics
> for ENABLE_GC_CHECKING. The macro is about sanity checking
> and poisoning of GGC memory. Which seems to me completely
> independent to setting of the default parameters.
Well, doing more collects also is "checking" and the GC checking part
this way becomes deterministic (not dependent on host setup) so no,
this is by no means an obvious change. If we think we collect too
often we can adjust the GC param static defaults to todays reality instead
(mostly --param ggc-min-heapsize which has been 4MB for ages).
Btw, I see the params.opt default is now 4096 unconditionally so
does ENABLE_GC_ALWAYS_COLLECT no longer "work"?
It used to adjust the params.def default values.
Richard.
> Ready to be installed?
> Thanks,
> Martin