Re: Default of max_stack_depth and getrlimit

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Heikki Linnakangas" <heikki(at)enterprisedb(dot)com>
Cc: "PostgreSQL-development" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Default of max_stack_depth and getrlimit
Date: 2008-07-21 15:02:37
Message-ID: 13554.1216652557@sss.pgh.pa.us
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"Heikki Linnakangas" <heikki(at)enterprisedb(dot)com> writes:
> In 8.2, we started to use getrlimit(RLIMIT_STACK, ...) to set
> max_stack_depth automatically, to a max of 2MB:

> http://archives.postgresql.org/pgsql-hackers/2006-10/msg00389.php

> However, it's not behaving as I expected when the stack limit is set to
> "unlimited".

Is there really any such thing as "unlimited" stack depth? I think that
treating that as "unknown" is a good conservative thing to do, because
it is surely a lie.

regards, tom lane

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