[Python-Dev] Re: Optimizing pymalloc (was obmalloc

2019年7月10日 01:31:20 -0700

On Wed, Jul 10, 2019 at 5:18 PM Neil Schemenauer <[email protected]> wrote:
>
> On 2019年07月09日, Inada Naoki wrote:
> > PyObject_Malloc inlines pymalloc_alloc, and PyObject_Free inlines 
> > pymalloc_free.
> > But compiler doesn't know which is the hot part in pymalloc_alloc and
> > pymalloc_free.
>
> Hello Inada,
>
> I don't see this on my PC. I'm using GCC 8.3.0. I have configured
> the build with --enable-optimizations.
I didn't use PGO and that's why GCC didn't know which part is hot.
Maybe, pymalloc performance is similar to mimalloc when PGO is used,
but I had not confirmed it.
While Linux distributions are using PGO, some people use non-PGO Python
(Homebrew, pyenv, etc...). So better performance without PGO is worth.
Regards,
-- 
Inada Naoki <[email protected]>
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