linux-kernel - Re: [QUICKLIST 0/6] Arch independent quicklists V1

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Message-Id: <20070312.042326.59467679.davem@davemloft.net>
Date:	Mon, 12 Mar 2007 04:23:26 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	clameter@....com
Cc:	linux-kernel@...r.kernel.org, ak@...e.com, holt@....com,
	linux-ia64@...r.kernel.org, mpm@...enic.com
Subject: Re: [QUICKLIST 0/6] Arch independent quicklists V1

From: Christoph Lameter <clameter@....com>
Date: Mon, 12 Mar 2007 04:12:32 -0700 (PDT)

> On Sun, 11 Mar 2007, David Miller wrote:
> 
> > I'm going to make the radical declaration that it be perhaps often
> > better to always initialize page table chunks to all zeros on
> > allocation.
> 
> That is the case if most of the page is going to be used soon. If we have 
> sparse access patterns then not zeroing can avoid uselessly bringing 
> cachelines in.

Good point.
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