From: | Gurjeet Singh <gurjeet(at)singh(dot)im> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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: | 2014-06-23 18:21:34 |
Message-ID: | CABwTF4ViF=+dW47g3in1qAbOk-tOkcWHJcBGTUE6UQO_T54LyQ@mail.gmail.com |
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Lists: | pgsql-hackers |
On Mon, Jun 23, 2014 at 12:49 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Gurjeet Singh <gurjeet(at)singh(dot)im> writes:
>> While I'd love to reduce the number of future installations without
>> this fix in place, I respect the decision to honor project policy. At
>> the same time, this change does not break anything. It introduces new
>> environment variables which change the behaviour, but behaves the old
>> way in the absence of those variables.
>
> Uh, no, it doesn't. We removed the dependence on -DLINUX_OOM_SCORE_ADJ.
> If a packager is expecting that to still work in 9.4, he's going to be
> unpleasantly surprised, because the system will silently fail to do what
> he's expecting: it will run all the backend processes at no-OOM-kill
> priority, which is likely to be bad.
True. I didn't think from a packager's perspective.
> It is possible to make packages that will work either way, along the lines
> of the advice I sent to the Red Hat guys:
> https://bugzilla.redhat.com/show_bug.cgi?id=1110969
>
> but I think it's a bit late in the cycle to be telling packagers to do
> that for 9.4.
Understandable.
>> BTW, does the project publish the feature-freeze deadlines and other
>> dates somewhere (apart from on this list).
>
> It's usually in the dev meeting minutes
> https://wiki.postgresql.org/wiki/PgCon_2014_Developer_Meeting#9.5_Schedule
Thanks. But it doesn't spell out the specific dates, or even the month
of feature-freeze.
Best regards,
--
Gurjeet Singh http://gurjeet.singh.im/
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