Re: [PATCH] Use MAP_HUGETLB where supported (v3)

On Tue, Oct 29, 2013 at 9:31 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Sergey Konoplev <gray(dot)ru(at)gmail(dot)com> writes:
>> On Wed, Oct 23, 2013 at 11:03 PM, Abhijit Menon-Sen <ams(at)2ndquadrant(dot)com> wrote:
>>> This is a slightly reworked version of the patch submitted by Richard
>>> Poole last month, which was based on Christian Kruse's earlier patch.
>
>> Is it possible that this patch will be included in a minor version of
>> 9.3? IMHO hugepages is a very important ability that postgres lost in
>> 9.3, and it would be great to have it back ASAP.
>
> Say what? There's never been any hugepages support in Postgres.

There were an ability to back shared memory with hugepages when using
<=9.2. I use it on ~30 servers for several years and it brings 8-17%
of performance depending on the memory size. Here you will find
several paragraphs of the description about how to do it
https://github.com/grayhemp/pgcookbook/blob/master/database_server_configuration.md.
Just search for the 'hugepages' word on the page.

--
Kind regards,
Sergey Konoplev
PostgreSQL Consultant and DBA

http://www.linkedin.com/in/grayhemp
+1 (415) 867-9984, +7 (901) 903-0499, +7 (988) 888-1979
gray(dot)ru(at)gmail(dot)com