Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754728AbYAAPSH (ORCPT ); Tue, 1 Jan 2008 10:18:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753500AbYAAPRz (ORCPT ); Tue, 1 Jan 2008 10:17:55 -0500 Received: from one.firstfloor.org ([213.235.205.2]:47925 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753482AbYAAPRy (ORCPT ); Tue, 1 Jan 2008 10:17:54 -0500 Date: Tue, 1 Jan 2008 16:19:42 +0100 From: Andi Kleen To: Theodore Tso , Andi Kleen , Christoph Lameter , Willy Tarreau , Steven Rostedt , Linus Torvalds , Ingo Molnar , Peter Zijlstra , LKML , Andrew Morton , Christoph Hellwig , "Rafael J. Wysocki" Subject: Re: Major regression on hackbench with SLUB (more numbers) Message-ID: <20080101151942.GA28085@one.firstfloor.org> References: <20071222221050.GA20753@1wt.eu> <20071223051241.GA4449@1wt.eu> <20071223141500.GB6430@one.firstfloor.org> <20071224034530.GB16658@thunk.org> <20071224233701.GB9784@kernel.org> <20071225033418.GA29199@one.firstfloor.org> <20080101124741.GH11776@mit.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080101124741.GH11776@mit.edu> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 954 Lines: 25 > Yeah, unfortunately, querying to find out how much memory is being > used by which parts of the system is something which I think needs to > be more than just a debugging feature. One could argue that "vmstat", slabinfo is about querying kernel internals and requiring stable and permanent interfaces to that would imply freezing the kernel internals. People who want to have information about slabs and other similar kernel internal allocations will always have to deal with version dependencies. No way around that. > Perhaps /proc/slabinfo should be that relatively stable interface, if That would require at least never changing any slab caches in any subsystem. Obviously not an option. -Andi -- 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/