From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@2ndquadrant.com>
cc: Gurjeet Singh <gurjeet@singh.im>, Peter Eisentraut <peter_e@gmx.net>,
 PGSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: /proc/self/oom_adj is deprecated in newer Linux kernels
In-reply-to: <20140610150933.GK8406@alap3.anarazel.de>
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Comments: In-reply-to Andres Freund <andres@2ndquadrant.com>
 message dated "Tue, 10 Jun 2014 17:09:33 +0200"
Date: Tue, 10 Jun 2014 11:20:28 -0400
Message-ID: <30709.1402413628@sss.pgh.pa.us>
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Andres Freund <andres@2ndquadrant.com> writes:
> On 2014-06-10 11:04:52 -0400, Tom Lane wrote:
>> But anyway, yeah, the point of this feature is that the OOM priority
>> of the postmaster, and *only* the postmaster, should be raised.  Allowing
>> unprivileged people to break that is not attractive on any level.

> A superuser could already write a function that echoes into /proc?

Maybe I'm mistaken, but I thought once the fork_process code has reset our
process's setting to zero it's not possible to lower it again (without
privileges we'd not have).

			regards, tom lane


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