Re: Setting oom_adj on linux?

From: Magnus Hagander <magnus(at)hagander(dot)net>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc: Alvaro Herrera <alvherre(at)commandprompt(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Setting oom_adj on linux?
Date: 2010-01-04 16:10:54
Message-ID: 9837222c1001040810t5e10fcf0scc432965e0609598@mail.gmail.com
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On Mon, Jan 4, 2010 at 17:07, Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
>
>
> Magnus Hagander wrote:
>>
>> On Mon, Jan 4, 2010 at 16:45, Alvaro Herrera <alvherre(at)commandprompt(dot)com>
>> wrote:
>>
>>>
>>> Magnus Hagander wrote:
>>>
>>>>
>>>> I realize this is a very platform-specific thing, but should we
>>>> consider setting the value of /proc/<pid>/oom_adj when running on
>>>> linux? See:
>>>>
>>>
>>>
>>> http://archives.postgresql.org/message-id/20080201223336.GC24780%40alvh.no-ip.org
>>>
>>
>> Grr. I had zero recollectoin of that :S
>>
>> Can't find a useful consensus though?
>>
>>
>
> It is probably worth trying to protect the postmaster in the init script.
> Beyond that things probably start to get fairly difficult.

Right. But AFAICS (though I haven't tested with -17), it will become
inherited to children, which is something we'd want to *undo*, no?

--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/

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