From: Tom Lane <tgl@sss.pgh.pa.us>
To: Michael Heaney <mheaney@jcvi.org>
Cc: Scott Ribe <scott_ribe@elevated-dev.com>
Cc: pgsql-admin@postgresql.org <pgsql-admin@postgresql.org>
Subject: Re: Huge pages not working on PG 9.4
Date: Fri, 16 Jan 2015 18:58:14 -0500
Message-ID: <28981.1421452694@sss.pgh.pa.us> (raw)
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Michael Heaney <mheaney@jcvi.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
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, mheaney@jcvi.org, scott_ribe@elevated-dev.com
Subject: Re: Huge pages not working on PG 9.4
In-Reply-To: <28981.1421452694@sss.pgh.pa.us>
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