From owner-freebsd-hackers@FreeBSD.ORG Wed Dec 1 09:29:58 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8648E16A4CE for ; Wed, 1 Dec 2004 09:29:58 +0000 (GMT) Received: from multiplay.co.uk (www1.multiplay.co.uk [212.42.16.7]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9421343D4C for ; Wed, 1 Dec 2004 09:29:57 +0000 (GMT) (envelope-from killing@multiplay.co.uk) Received: from vader ([212.135.219.179]) by multiplay.co.uk (multiplay.co.uk [212.42.16.7]) (MDaemon.PRO.v7.2.1.R) with ESMTP id md50000757337.msg for ; Wed, 01 Dec 2004 09:21:30 +0000 Message-ID: <021e01c4d788$41421370$b3db87d4@multiplay.co.uk> From: "Steven Hartland" To: Date: Wed, 1 Dec 2004 09:29:24 -0000 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Spam-Processed: multiplay.co.uk, Wed, 01 Dec 2004 09:21:30 +0000 (not processed: message from valid local sender) X-MDRemoteIP: 212.135.219.179 X-Return-Path: killing@multiplay.co.uk X-MDaemon-Deliver-To: hackers@freebsd.org X-MDAV-Processed: multiplay.co.uk, Wed, 01 Dec 2004 09:21:33 +0000 Subject: sysctl machdep.hlt_logical_cpus affects kernel HZ? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Dec 2004 09:29:58 -0000 One of my colleagues has just noticed that setting: sysctl machdep.hlt_logical_cpus=1 appears to double the kernel frequency as reported by systat on 5.2.1-RELEASE-p11. Is this correct? What are the implications? How can this be corrected? Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone (023) 8024 3137 or return the E.mail to postmaster@multiplay.co.uk.