From owner-freebsd-hackers@FreeBSD.ORG  Wed Oct 31 21:29:52 2012
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Date: Wed, 31 Oct 2012 14:29:50 -0700
Message-ID: <CAGH67wS1Qy=QcBAuLMtuLoQcAGxUtwKRW=WfyNYfbX41d5N8tg@mail.gmail.com>
Subject: Re: make -jN buildworld on < 512MB ram
From: Garrett Cooper <yanegomi@gmail.com>
To: Adrian Chadd <adrian@freebsd.org>
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Cc: Alfred Perlstein <bright@mu.org>, hackers@freebsd.org
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On Wed, Oct 31, 2012 at 1:44 PM, Adrian Chadd <adrian@freebsd.org> wrote:
> On 31 October 2012 13:41, Peter Jeremy <peter@rulingia.com> wrote:
>
>> Another, more involved, approach would be for the scheduler to manage
>> groups of processes - if a group of processes is causing memory
>> pressure as a whole then the scheduler just stops scheduling some of
>> them until the pressure reduces (effectively swap them out).  (Yes,
>> that's vague and lots of hand-waving that might not be realisable).
>
> Well, does the compiler actually need that much memory? :)

For calculating SSAs, directed graphs, and when dealing with larger
optimization levels -- sadly, yes it can.
-Garrett