Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932215AbWBULWq (ORCPT ); Tue, 21 Feb 2006 06:22:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932253AbWBULWq (ORCPT ); Tue, 21 Feb 2006 06:22:46 -0500 Received: from MAIL.13thfloor.at ([212.16.62.50]:32746 "EHLO mail.13thfloor.at") by vger.kernel.org with ESMTP id S932215AbWBULWp (ORCPT ); Tue, 21 Feb 2006 06:22:45 -0500 Date: Tue, 21 Feb 2006 12:22:44 +0100 From: Herbert Poetzl To: "Eric W. Biederman" Cc: David Lang , Jan Engelhardt , Jesper Juhl , "linux-os (Dick Johnson)" , Linux kernel Subject: Re: pid_t range question Message-ID: <20060221112244.GB30135@MAIL.13thfloor.at> Mail-Followup-To: "Eric W. Biederman" , David Lang , Jan Engelhardt , Jesper Juhl , "linux-os (Dick Johnson)" , Linux kernel References: <9a8748490602091213p2e020355ue516d59b7d0b6c81@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1424 Lines: 36 On Fri, Feb 17, 2006 at 02:39:55PM -0700, Eric W. Biederman wrote: > David Lang writes: > > > I agree that the mojority of users don't hit this limit, but I've > > got a couple of boxes that push it (they run out of ram before that, > > but more ram is on order). > > > > however it sounds like switching to a 64 bit kernel will avoid this > > limit, so I'll put my efforts into configuring a box to do that. > > That is what I would recommend. Unless you do something weird an > painful like configure a kernel doing the 4G/4G split a 32bit box is > going to have memory problems with more than 32K tasks. or configure the newly introduced 2.13/1.87 (or 1/3 split) I don't think low memory is really the issue here, the scheduling of 32k+ tasks is much more a problem ... best, Herbert > Just remember you need push up /proc/sys/kernel/pid-max to raise the > default on a 64bit box. > > Eric > - > 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/ - 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/