Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262027AbVCNWpy (ORCPT ); Mon, 14 Mar 2005 17:45:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262055AbVCNWmX (ORCPT ); Mon, 14 Mar 2005 17:42:23 -0500 Received: from fire.osdl.org ([65.172.181.4]:1989 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S262040AbVCNWld (ORCPT ); Mon, 14 Mar 2005 17:41:33 -0500 Date: Mon, 14 Mar 2005 14:41:03 -0800 From: Andrew Morton To: Badari Pulavarty Cc: ext2-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [Ext2-devel] Re: inode cache, dentry cache, buffer heads usage Message-Id: <20050314144103.0d6ed063.akpm@osdl.org> In-Reply-To: <1110838395.24286.297.camel@dyn318077bld.beaverton.ibm.com> References: <1110394558.24286.203.camel@dyn318077bld.beaverton.ibm.com> <20050310174751.522c5420.akpm@osdl.org> <1110835692.24286.288.camel@dyn318077bld.beaverton.ibm.com> <20050314141128.7da95c34.akpm@osdl.org> <1110838395.24286.297.camel@dyn318077bld.beaverton.ibm.com> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1274 Lines: 39 Badari Pulavarty wrote: > > On Mon, 2005-03-14 at 14:11, Andrew Morton wrote: > > Badari Pulavarty wrote: > > > > > > On Thu, 2005-03-10 at 17:47, Andrew Morton wrote: > > > > Badari Pulavarty wrote: > > > > > > > > > > So, why is these slab cache are not getting purged/shrinked even > > > > > under memory pressure ? (I have seen lowmem as low as 6MB). What > > > > > can I do to keep the machine healthy ? > > > > > > > > Tried increasing /proc/sys/vm/vfs_cache_pressure? (That might not be in > > > > 2.6.8 though). > > > > > > > > > > > > > > Yep. This helped shrink the slabs, but we end up eating up lots of > > > the lowmem in Buffers. Is there a way to shrink buffers ? > > > > It would require some patchwork. Why is it a problem? That memory is > > reclaimable. > > > > Well, machine pauses for 5-30 seconds for each vi,cscope, write() etc. Why? > > How'd you get 1.8gig of lowmem? > > 2:2 split > Does a normal kernel exhibit the pauses? - 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/