Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 18 Sep 2002 12:41:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 18 Sep 2002 12:41:50 -0400 Received: from perninha.conectiva.com.br ([200.250.58.156]:39949 "HELO perninha.conectiva.com.br") by vger.kernel.org with SMTP id ; Wed, 18 Sep 2002 12:41:49 -0400 Date: Wed, 18 Sep 2002 13:46:38 -0300 (BRT) From: Rik van Riel X-X-Sender: riel@duckman.distro.conectiva To: Linus Torvalds Cc: Andries Brouwer , Ingo Molnar , William Lee Irwin III , Subject: Re: [patch] lockless, scalable get_pid(), for_each_process() elimination, 2.5.35-BK In-Reply-To: Message-ID: X-spambait: aardvark@kernelnewbies.org X-spammeplease: aardvark@nl.linux.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 762 Lines: 22 On Wed, 18 Sep 2002, Linus Torvalds wrote: > Give me one reason for why these two added lines aren't better than all > the complexity we've discussed? On second thought ... yes there's a reason. Suppose you have 100000 threads on your box already, how long is it going to take to walk them all to figure out the pid distribution ? And are you willing to walk 100000 threads for every 16 pids allocated ? Rik -- Spamtrap of the month: september@surriel.com http://www.surriel.com/ http://distro.conectiva.com/ - 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/