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

On Tue, Jun 17, 2014 at 04:39:51PM -0400, Tom Lane wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
> > We could do better by accounting for memory usage ourselves, inside
> > the memory-context system, but that'd probably impose some overhead we
> > don't have today.

> I wonder how practical it would be to forestall Noah's scenario by
> preallocating all the stack space we want before enabling the rlimit.

I think that's worth a closer look.  Compared to doing our own memory usage
tracking, it has the major advantage of isolating the added CPU overhead at
backend start.

-- 
Noah Misch
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