From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262253AbTJOFFr (ORCPT ); Wed, 15 Oct 2003 01:05:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262259AbTJOFFr (ORCPT ); Wed, 15 Oct 2003 01:05:47 -0400 Received: from dsl092-013-071.sfo1.dsl.speakeasy.net ([66.92.13.71]:48614 "EHLO pelerin.serpentine.com") by vger.kernel.org with ESMTP id S262253AbTJOFFq (ORCPT ); Wed, 15 Oct 2003 01:05:46 -0400 Subject: Re: Strange dcache memory pressure when highmem enabled From: "Bryan O'Sullivan" To: Neil Brown Cc: linux-kernel@vger.kernel.org In-Reply-To: <16268.52761.907998.436272@notabene.cse.unsw.edu.au> References: <16268.52761.907998.436272@notabene.cse.unsw.edu.au> Content-Type: text/plain Message-Id: <1066194345.16993.12.camel@camp4.serpentine.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 Date: Tue, 14 Oct 2003 22:05:45 -0700 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2003-10-14 at 21:33, Neil Brown wrote: > I have a fairly busy NFS server which has been having performance > problems lately. I have managed to work around the problems, but > would really like to get the root problem fixed. Funny, I have seen exactly the same problem, though with a Red Hat 2.4.20 kernel, rather than a vanilla-ish 2.4. I have a few thousand more entries in my dentry cache on a 2G machine, but it's still a pitiful number. What workarounds did you find?