Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 24 Sep 2002 03:16:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 24 Sep 2002 03:16:43 -0400 Received: from paperboy.noris.net ([62.128.1.27]:63140 "EHLO mail2.noris.net") by vger.kernel.org with ESMTP id ; Tue, 24 Sep 2002 03:16:42 -0400 Mime-Version: 1.0 Message-Id: Date: Mon, 23 Sep 2002 18:36:02 +0200 To: linux-kernel@vger.kernel.org From: Matthias Urlichs Subject: Re: [ANNOUNCE] Native POSIX Thread Library 0.1 Content-Type: text/plain; charset="us-ascii" ; format="flowed" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 883 Lines: 20 Peter Waechtler: > [ unattributed -- please don't discard attributions ] > Having multiple threads doing real work including IO means more > blocking IO and therefore more context switches. On the other hand, having to multiplex in userspace requires calls to poll() et al, _and_ explicitly handling state which the kernel needs to handle anyway -- including locking and all that crap. Given that an efficient and fairly-low-cost 1:1 implementation is demonstrably possible ;-) the necessity to do any kind of n:m work strikes me as extremely low. -- Matthias Urlichs http://smurf.noris.de ICQ:20193661 AIM:smurfixx - 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/