From owner-cvs-all Tue Jul 16 23:48:34 2002 Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EEAD837B400; Tue, 16 Jul 2002 23:48:31 -0700 (PDT) Received: from canning.wemm.org (canning.wemm.org [192.203.228.65]) by mx1.FreeBSD.org (Postfix) with ESMTP id A581443E42; Tue, 16 Jul 2002 23:48:31 -0700 (PDT) (envelope-from peter@wemm.org) Received: from fw.wemm.org (canning.wemm.org [192.203.228.65]) by canning.wemm.org (Postfix) with ESMTP id 890002A7D6; Tue, 16 Jul 2002 23:48:31 -0700 (PDT) (envelope-from peter@wemm.org) Received: from overcee.wemm.org (overcee.wemm.org [10.0.0.3]) by fw.wemm.org (Postfix) with ESMTP id 47F494C279; Tue, 16 Jul 2002 23:48:31 -0700 (PDT) (envelope-from peter@wemm.org) Received: from wemm.org (localhost [127.0.0.1]) by overcee.wemm.org (Postfix) with ESMTP id E40613910; Tue, 16 Jul 2002 23:48:30 -0700 (PDT) (envelope-from peter@wemm.org) X-Mailer: exmh version 2.5 07/13/2001 with nmh-1.0.4 To: Matt Dillon Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/i386 machdep.c In-Reply-To: <200207170541.g6H5fiiv080287@freefall.freebsd.org> Date: Tue, 16 Jul 2002 23:48:30 -0700 From: Peter Wemm Message-Id: <20020717064830.E40613910@overcee.wemm.org> Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Matt Dillon wrote: > dillon 2002/07/16 22:41:44 PDT > > Modified files: > sys/i386/i386 machdep.c > Log: > Qualify comment on machdep.cpu_idle_hlt. Turning this on on a SMP > machine will result in approximately a 4.2% loss of performance (buildworld ) > and approximately a 5% reduction in power consumption (when idle). Add XXX > note on how to really make hlt work (send an IPI to wakeup HLTed cpus on > a thread-schedule event? Generate an interrupt somehow?). I believe Seigo Tanimura is tinkering with this (send IPI), but I do not know how far along he is. Cheers, -Peter -- Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message