Re: remap_file_pages() use

[Armin Rigo]

Hi Kirill,

On 19 May 2014 17:17, Kirill A. Shutemov
<kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
> IIUC PyPy uses the syscall in some early prototype and looks like guys are
> okay to rework it to mmap() if default sysctl_max_map_count will be high
> enough.

Yes, we can switch easily if needed.  The syscall is not in any
"production" version yet.

Please note that "high enough" in this context means higher than
2**20.  We need it high enough to handle regularly 10-20% of all the
RAM used by each program.  If I count correctly, at 20%, 2**20 fails
above 20GB.  In general I would suggest to use a default limit that
depends on the amount of RAM (+swap) available.


A bientÃt,

Armin.
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