From owner-freebsd-arch@FreeBSD.ORG  Fri Mar 28 21:11:46 2003
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 0FFE837B401
	for <arch@freebsd.org>; Fri, 28 Mar 2003 21:11:46 -0800 (PST)
Received: from puffin.mail.pas.earthlink.net (puffin.mail.pas.earthlink.net
	[207.217.120.139])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 869A643F93
	for <arch@freebsd.org>; Fri, 28 Mar 2003 21:11:45 -0800 (PST)
	(envelope-from tlambert2@mindspring.com)
Received: from pool0191.cvx21-bradley.dialup.earthlink.net ([209.179.192.191]
	helo=mindspring.com)
	by puffin.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128)
	(Exim 3.33 #1)	id 18z8d0-0005nc-00; Fri, 28 Mar 2003 21:11:39 -0800
Message-ID: <3E852ABD.E77EA566@mindspring.com>
Date: Fri, 28 Mar 2003 21:10:21 -0800
From: Terry Lambert <tlambert2@mindspring.com>
X-Mailer: Mozilla 4.79 [en] (Win98; U)
X-Accept-Language: en
MIME-Version: 1.0
To: Julian Elischer <julian@elischer.org>
References: <Pine.BSF.4.21.0303281253080.52134-100000@InterJet.elischer.org>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a46d4fb99f91a96aa48d9b9983a5122a09a7ce0e8f8d31aa3f350badd9bab72f9c350badd9bab72f9c
cc: arch@freebsd.org
cc: Scott Long <scott_long@btc.adaptec.com>
cc: Daniel Eischen <eischen@pcnet1.pcnet.com>
Subject: Re: 1:1 threading.
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussion related to FreeBSD architecture
	<freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 29 Mar 2003 05:11:47 -0000

Julian Elischer wrote:
> I'm happy to see the limit of (NKSEs !> NCPU) lifted for processes that
> are in some way identified as 1:1 mode processes..
> I don't want to lift it for KSE mode processes however.
> 
> For system scope threads, I guess you just allocate a separate KSEGRP
> so it has somewhere to store pertinent info.
> 
> that makes it rather simple
> system scope threads have a thread, a KSE and a KSEGRP
> process scope threads just use the existing KSEGRP.
> 
> Everythiong should just "fall out correctly" by doing this..

Except that means for process scope threads, you don't get SMP
scalability, since the single KSEGRP binds them all to a single
CPU... right?

-- Terry