linux-kernel - Re: [PATCH prototype] [0/8] Predictive bitmaps for ELF executables

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Message-Id: <20080319.170937.247919863.davem@davemloft.net>
Date:	Wed, 19 Mar 2008 17:09:37 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	akpm@...ux-foundation.org
Cc:	drepper@...il.com, andi@...stfloor.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH prototype] [0/8] Predictive bitmaps for ELF executables

From: Andrew Morton <akpm@...ux-foundation.org>
Date: Wed, 19 Mar 2008 16:12:11 -0700

> I did some work on that many years ago and I do recall that it
> helped, but I forget how much.

I wrote such a patch ages ago as well.

Frankly, based upon my experiences then and what I know now, I think
it's a lose to do this.

Better to 1) have enough ram and 2) make the reclaim smarter about
important "executable" page cache pages.
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