Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262513AbUCLUbb (ORCPT ); Fri, 12 Mar 2004 15:31:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262509AbUCLU3x (ORCPT ); Fri, 12 Mar 2004 15:29:53 -0500 Received: from ppp-217-133-42-200.cust-adsl.tiscali.it ([217.133.42.200]:58382 "EHLO dualathlon.random") by vger.kernel.org with ESMTP id S262513AbUCLU1A (ORCPT ); Fri, 12 Mar 2004 15:27:00 -0500 Date: Fri, 12 Mar 2004 21:27:41 +0100 From: Andrea Arcangeli To: Rik van Riel Cc: Chris Friesen , Linus Torvalds , Hugh Dickins , Ingo Molnar , Andrew Morton , linux-kernel@vger.kernel.org, William Lee Irwin III Subject: Re: anon_vma RFC2 Message-ID: <20040312202741.GG30940@dualathlon.random> References: <40520928.4050409@nortelnetworks.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i X-GPG-Key: 1024D/68B9CB43 13D9 8355 295F 4823 7C49 C012 DFA1 686E 68B9 CB43 X-PGP-Key: 1024R/CB4660B9 CC A0 71 81 F4 A0 63 AC C0 4B 81 1D 8C 15 C8 E5 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 791 Lines: 20 On Fri, Mar 12, 2004 at 02:06:17PM -0500, Rik van Riel wrote: > On Fri, 12 Mar 2004, Chris Friesen wrote: > > > What happens when you have more than PAGE_SIZE processes running? > > Forked off the same process ? > Without doing an exec ? > On a 32 bit system ? > > You'd probably run out of space to put the VMAs, > mm_structs and pgds long before reaching this point ... 7.5k users are being reached in a real workload with around 2gigs mapped per process and with tons of vma per process. with 2.6 and faster cpus I hope to go even further. - 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/