From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261563AbTLBOpY (ORCPT ); Tue, 2 Dec 2003 09:45:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261595AbTLBOpY (ORCPT ); Tue, 2 Dec 2003 09:45:24 -0500 Received: from web20712.mail.yahoo.com ([66.163.169.153]:42366 "HELO web20712.mail.yahoo.com") by vger.kernel.org with SMTP id S261563AbTLBOpX (ORCPT ); Tue, 2 Dec 2003 09:45:23 -0500 Message-ID: <20031202123323.73771.qmail@web20712.mail.yahoo.com> Date: Tue, 2 Dec 2003 04:33:23 -0800 (PST) From: kernwek jalsl Subject: 2.4.20 page cache information To: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello Everyone; On my embedded system having 64MB of RAM and no swap, I see the following information on opening /proc/meminfo: total: used: free: shared: buffers: cached: Mem: 62894080 47947776 14946304 0 4964352 23674880 Swap: 0 0 0 MemTotal: 61420 kB MemFree: 14596 kB MemShared: 0 kB Buffers: 4848 kB Cached: 23120 kB SwapCached: 0 kB Active: 32340 kB ActiveAnon: 10760 kB ActiveCache: 21580 kB Inact_dirty: 0 kB Inact_laundry: 6336 kB Inact_clean: 236 kB Inact_target: 7780 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 61420 kB LowFree: 14596 kB SwapTotal: 0 kB SwapFree: 0 kB As I see the total memory belonging to page cache is 23MB and the anonymous list is 10MB. But if I count the RSS values for all the processes running on the system, it hardly comes to 15MB. Where is the rest of the 18MB? If I understand the "cached:" = (pages in the page cache - buffer cache). Even if I am doing lots of file activity; I cannot imagine the file system reads and writes holding up 18MB of the page cache. Am I missing something here? Thanks in advance Editya __________________________________ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/