From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 25 Feb 2003 07:03:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 25 Feb 2003 07:03:26 -0500 Received: from pinguin13.kwc.at ([193.228.81.158]:3055 "EHLO mail.hello-penguin.com") by vger.kernel.org with ESMTP id ; Tue, 25 Feb 2003 07:03:25 -0500 Date: Tue, 25 Feb 2003 13:13:28 +0100 From: Dejan Muhamedagic To: linux-kernel@vger.kernel.org Cc: Andrea Arcangeli Subject: vm issues (2) Message-ID: <20030225131328.A8651@smp.colors.kwc> Reply-To: Dejan Muhamedagic Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.23i X-Lotto: Suggested Lotto numbers (Austrian 6 out of 45): 1 7 18 27 40 41 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello, The new kernel 2.4.21-pre4aa3 is running now, but the box behaves similarly. It still swaps quite a lot and much more than the rmap vm. Both servers are under the same load. One difference is the amount of free memory: r b w swpd free buff cache si so bi bo in cs us sy id aa: 0 7 0 5773620 202416 118076 2069716 5330 746 5330 766 4845 5597 12 14 74 rmap: 0 0 0 3498044 13572 4144 4754596 74 0 75 6 642 598 5 3 92 The aa kernel keeps ~200MB out of 6GB of memory unused. I'm not sure, but if we could reduce it perhaps there would be much less swapping. Is there a way to achieve this? Another notable difference between the two vm versions is that the rmap vm maintains about 80% of memory on the active list and the aa vm much less: between 4% and 12%. The rmap vm must use more CPU, but these servers have a lot of processing power so it is not noticeable. Cheers, Dejan