linux-kernel - Re: [GIT PULL] mm: frontswap (for 3.2 window)

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Message-ID: <15917317.H6lYS7chMM@grover>
Date:	Tue, 08 Nov 2011 07:15:04 -0500
From:	Ed Tomlinson <edt@....ca>
To:	Valdis.Kletnieks@...edu
Cc:	John Stoffel <john@...ffel.org>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Johannes Weiner <jweiner@...hat.com>,
	Pekka Enberg <penberg@...nel.org>,
	Cyclonus J <cyclonusj@...il.com>,
	Sasha Levin <levinsasha928@...il.com>,
	Christoph Hellwig <hch@...radead.org>,
	David Rientjes <rientjes@...gle.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Konrad Wilk <konrad.wilk@...cle.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>, ngupta@...are.org,
	Chris Mason <chris.mason@...cle.com>, JBeulich@...ell.com,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Jonathan Corbet <corbet@....net>
Subject: Re: [GIT PULL] mm: frontswap (for 3.2 window)

On Sunday 06 November 2011 17:32:54 Valdis.Kletnieks@...edu wrote:
> On Fri, 28 Oct 2011 16:52:28 EDT, John Stoffel said:
> > Dan> "WHY" this is such a good idea is the same as WHY it is useful to
> > Dan> add RAM to your systems. 
> >
> > So why would I use this instead of increasing the physical RAM?
> 
> You're welcome to buy me a new laptop that has a third DIMM slot. :)
> 
> There's a lot of people running hardware that already has the max amount of
> supported RAM, and who for budget or legacy-support reasons can't easily do a
> forklift upgrade to a new machine.

I've got three boxes with this problem here.  Hense my support for frontswap/cleancache.

Ed

> > if I've got a large system which cannot physically use any more
> > memory, then it might be worth my while to use TMEM to get more
> > performance out of this expensive hardware.
> 
> It's not always a large system....
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