Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262104AbUCLNkg (ORCPT ); Fri, 12 Mar 2004 08:40:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262106AbUCLNkg (ORCPT ); Fri, 12 Mar 2004 08:40:36 -0500 Received: from holomorphy.com ([207.189.100.168]:35589 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S262104AbUCLNkf (ORCPT ); Fri, 12 Mar 2004 08:40:35 -0500 Date: Fri, 12 Mar 2004 05:40:24 -0800 From: William Lee Irwin III To: Andrea Arcangeli Cc: Rik van Riel , Hugh Dickins , Ingo Molnar , Andrew Morton , torvalds@osdl.org, linux-kernel@vger.kernel.org Subject: Re: anon_vma RFC2 Message-ID: <20040312134024.GS655@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Andrea Arcangeli , Rik van Riel , Hugh Dickins , Ingo Molnar , Andrew Morton , torvalds@osdl.org, linux-kernel@vger.kernel.org References: <20040311135608.GI30940@dualathlon.random> <20040312122127.GQ30940@dualathlon.random> <20040312124638.GR655@holomorphy.com> <20040312132436.GT30940@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040312132436.GT30940@dualathlon.random> User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 977 Lines: 20 On Fri, Mar 12, 2004 at 02:24:36PM +0100, Andrea Arcangeli wrote: > did you try specweb with apache? that's super heavy mremap as far as I > know (and it maybe using anon memory, and if not I certainly cannot > exclude other apps are using mremap on significant amounts of anymous > ram). To a point that the kmap_lock for the persistent kmaps I used > originally in mremap (at least it has never been racy) was a showstopper > bottleneck spending most of system time there (profiling was horrible in > the kmap_lock) and I had to fixup the 2.6 way with the per-cpu atomic > kmaps to avoid being an order of magnitude slower than in the small > boxes w/o highmem. No. I have never had access to systems set up for specweb. -- wli - 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/