From: | Michael Heaney <mheaney(at)jcvi(dot)org> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org> |
Subject: | Re: Huge pages not working on PG 9.4 |
Date: | 2015-01-17 02:08:29 |
Message-ID: | 54B9C41D.10109@jcvi.org |
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Lists: | pgsql-admin |
On 1/16/2015 6:58 PM, Tom Lane wrote:
> Michael Heaney <mheaney(at)jcvi(dot)org> writes:
>>> FATAL: huge pages not supported on this platform
>> <sigh> Nope, that didn't make any difference. Since I compile my own
>> binary,
>> I'm wondering if there's something that 'configure' didn't set properly.
> A quick look at the PG source code says that that message means that
> MAP_HUGETLB isn't defined. Our code is expecting <sys/mman.h> to provide
> that symbol, which it should do by default according to what I can see on
> my RHEL 6.6 box. Perhaps you've defined some of the feature restriction
> macros like _POSIX_SOURCE?
>
> regards, tom lane
Thanks for the helpful clue, Tom. I haven't knowingly defined
_POSIX_SOURCE or any other macros. I go through the same configure/make
process on the Centos 6.6 VM on my home PC, and huge pages works just
fine. Maybe it's an issue with CentOS 6.4?
--
Michael Heaney
JCVI
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