Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264978AbTFYT3l (ORCPT ); Wed, 25 Jun 2003 15:29:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264980AbTFYT3k (ORCPT ); Wed, 25 Jun 2003 15:29:40 -0400 Received: from pushme.nist.gov ([129.6.16.92]:48537 "EHLO postmark.nist.gov") by vger.kernel.org with ESMTP id S264978AbTFYT3Y (ORCPT ); Wed, 25 Jun 2003 15:29:24 -0400 To: linux-kernel@vger.kernel.org Subject: Relieving lowmem pressure on a highmem box, 2.4 From: Ian Soboroff Date: Wed, 25 Jun 2003 15:43:11 -0400 Message-ID: User-Agent: Gnus/5.1002 (Gnus v5.10.2) Emacs/21.2 (gnu/linux) 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 Content-Length: 1610 Lines: 36 I have a Dell server with 12GB of RAM in it which is having a lot of trouble with lowmem pressure. wli's bloatmeter script shows that it's a lot of buffer-heads and inodes. $ bloatmost | head -4 buffer_head: 191316KB 211893KB 90.28 inode_cache: 64813KB 66097KB 98.5 size-64: 82KB 10871KB 0.75 size-32: 95KB 5694KB 1.68 $ cat /proc/slabinfo | sort -k 2,2n | tail size-512 1052 1176 512 132 147 1 : 124 62 dentry_cache 1068 2580 128 86 86 1 : 252 126 blkdev_requests 1200 1200 128 40 40 1 : 252 126 filp 1230 1230 128 41 41 1 : 252 126 size-32 1532 91118 64 42 1571 1 : 252 126 pte_chain 2466 13050 128 157 435 1 : 252 126 size-128 2946 3450 128 115 115 1 : 252 126 vm_area_struct 3192 4830 128 138 161 1 : 252 126 inode_cache 129503 132195 512 18885 18885 1 : 124 62 buffer_head 2043732 2260200 96 56450 56505 1 : 252 126 What's a good solution for this? I'm not ready to move to 2.5, since stability is pretty important for us, but patching 2.4 should be OK. The current kernel is RedHat's 2.4.20-18.8 (SMP, BIGMEM; HIGHMEM option set to 64GB). Thanks in advance, Ian - 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/