From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Gurjeet Singh <gurjeet(at)singh(dot)im> |
Cc: | Andres Freund <andres(at)anarazel(dot)de>, Peter Eisentraut <peter_e(at)gmx(dot)net>, PGSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: /proc/self/oom_adj is deprecated in newer Linux kernels |
Date: | 2014-06-19 00:15:14 |
Message-ID: | 4408.1403136914@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Gurjeet Singh <gurjeet(at)singh(dot)im> writes:
> On Tue, Jun 10, 2014 at 12:05 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> If we're going to do this, I would say that we should also take the
>> opportunity to get out from under the question of which kernel API
>> we're dealing with. So perhaps a design like this:
>>
>> 1. If the environment variable PG_OOM_ADJUST_FILE is defined, it's
>> the name of a file to write something into after forking. The typical
>> value would be "/proc/self/oom_score_adj" or "/proc/self/oom_adj".
>> If not set, nothing happens.
>>
>> 2. If the environment variable PG_OOM_ADJUST_VALUE is defined, that's
>> the string we write, otherwise we write "0".
> Please find attached the patch. It includes the doc changes as well.
Applied with some editorialization.
regards, tom lane
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