Message-ID: <41FAA446.5090704@nortelnetworks.com>
Date: Fri, 28 Jan 2005 14:44:54 -0600
From: Chris Friesen <cfriesen@nortelnetworks.com>
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040115
MIME-Version: 1.0
To: John Richard Moser <nigelenki@comcast.net>
CC: linux-kernel@vger.kernel.org
Subject: Re: Why does the kernel need a gig of VM?
References: <41FA9B37.1020100@comcast.net>
In-Reply-To: <41FA9B37.1020100@comcast.net>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 705
Lines: 18

John Richard Moser wrote:

> So what's the layout of that top 1G?  What's it all used for?  Is there
> some obscene restriction of 1G of shared memory or something that gets
> mapped up there?
> 
> How much does it need, and why?  What, if anything, is variable and
> likely to do more than 10 or 15 megs of variation?

I'm guessing the high runners in the variable category are likely to be 
the page cache, all kinds of in-flight IO buffers, and such.

Chris
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/