From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752437AbYCMEzW (ORCPT ); Thu, 13 Mar 2008 00:55:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750985AbYCMEzJ (ORCPT ); Thu, 13 Mar 2008 00:55:09 -0400 Received: from main.gmane.org ([80.91.229.2]:46050 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750792AbYCMEzJ (ORCPT ); Thu, 13 Mar 2008 00:55:09 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Adam Megacz Subject: question about PAE and buffercache Date: Wed, 12 Mar 2008 14:48:30 -0700 Organization: Myself Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: feferman.megacz.com X-Home-Page: http://www.megacz.com/ User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) Cancel-Lock: sha1:0Q+EDiocH6rOKTQdIuDRWXiUmZk= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sorry to ask here, but I looked around for quite a while on the web. Is the size of the buffercache in any way constrained by the amount of virtual memory space allocated to the kernel (when using a PAE kernel)? For example with a 1G/3G split and 8G of physical memory, if userspace processes aren't interested in more than 6G of that memory, would the kernel fully utilize all of the remaining 2G for buffercache? - a