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Date: Tue, 20 Nov 2001 21:35:40 -0200 (BRST)
From: Rik van Riel <riel@conectiva.com.br>
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To: "David S. Miller" <davem@redhat.com>
Cc: <akpm@zip.com.au>, <dmaas@dcine.com>, <linux-kernel@vger.kernel.org>
Subject: Re: Swap
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On Tue, 20 Nov 2001, David S. Miller wrote:
>    From: Andrew Morton <akpm@zip.com.au>
>    Date: Tue, 20 Nov 2001 14:23:38 -0800
>
>    Could you please explain further?  What's more expensive
>    than the copy?
>
> TLB misses add to the cost, and this overhead is more than
> "noise".

Well, this could have something to do with the fact
that our page fault handler only maps in _1_ page at
a time, so we're trapping into the pagefault handler
every 4kB...

Rik
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