Re: Built-in support for a memory consumption ulimit?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Built-in support for a memory consumption ulimit?
Date: 2014-06-18 04:30:07
Message-ID: 28340.1403065807@sss.pgh.pa.us
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Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> writes:
> On Wed, Jun 18, 2014 at 2:09 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> On the other hand, this approach would entirely fail to account for
>> non-palloc'd allocations, which could be a significant issue in some
>> contexts.

> Won't it be possible if we convert malloc calls in backend code to
> go through wrapper, we already have some precedents of same like
> guc_malloc, pg_malloc?

We do not have control over mallocs done by third-party code
(think pl/perl for example). mallocs done by our own code are
fairly insignificant, I would hope.

regards, tom lane

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