linux-kernel - Re: [PATCH 0/5] make slab gfp fair

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Date:	Thu, 17 May 2007 10:30:21 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
cc:	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Thomas Graf <tgraf@...g.ch>,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Phillips <phillips@...gle.com>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH 0/5] make slab gfp fair

On Thu, 17 May 2007, Peter Zijlstra wrote:

> > 2. It seems to be based on global ordering of allocations which is
> >    not possible given large systems and the relativistic constraints
> >    of physics. Ordering of events get more expensive the bigger the
> >    system is.
> > 
> >    How does this system work if you can just order events within
> >    a processor? Or within a node? Within a zone?
> 
> /me fails again..
> 
> Its about ensuring ALLOC_NO_WATERMARKS memory only reaches PF_MEMALLOC
> processes, not joe random's pi calculator.

Watermarks are per zone?
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