From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 8 Mar 2007 18:31:01 +0100 From: Ingo Molnar Subject: Re: [RFC][PATCH 3/5] mm: RCUify vma lookup Message-ID: <20070308173101.GB16834@elte.hu> References: <20070306013815.951032000@taijtu.programming.kicks-ass.net> <20070306014211.293824000@taijtu.programming.kicks-ass.net> <20070306022319.GF23845@wotan.suse.de> <20070306083632.GA10540@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070306083632.GA10540@wotan.suse.de> Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Peter Zijlstra , linux-mm@kvack.org, Christoph Lameter , "Paul E. McKenney" List-ID: * Nick Piggin wrote: > > This is a funny scheme you're trying to do in order to try to avoid > > rwsems. [...] yeah, i think you are pretty much right. > ... though I must add that it seems like a very cool patchset and I > hope I can get time to go through it more thoroughly! Nice work ;) :) We'll figure out something else. The fundamental problem of vma lookup scalability is still there, and -rt here isnt really anything special, it's more like an 'early warning system for scalability problems' that shows us on single-CPU systems the issues of 1024-CPU systems ;-) Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org