Good memory allocator for data processing

[Yubin Ruan]

On Thu, May 7, 2020 at 2:30 AM Carlos O'Donell <carlos@redhat.com> wrote:
>
> On 5/3/20 10:50 PM, Yubin Ruan wrote:
> > Thanks for the information, but does it provide any configuration
> > method, I mean, never return, instead of
> >
> >         "However, if the top chunk in a heap - the portion adjacent to
> > unmapped memory - becomes large enough, some of that memory may be
> > unmapped and returned to the operating system"
>
> Yes, see the glibc.malloc.mmap_max and glibc.malloc.trim_threshold.
>
> You want to raise the mmap max so mmap is never used for single
> allocations, since such allocations are always freed with munmap.
>
> You want to raise the trim threshold so trimming never happens.
>
> With those changes you'll never give memory back to the OS.
>
> Does that answer your question?

Thank you. This is exactly what I want. I will try and see whether
there will be any further problems with this configuration.

--
Thanks & Regards,
Yubin