From owner-freebsd-hackers@FreeBSD.ORG Sat Apr 14 21:29:40 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DB019106566B for ; Sat, 14 Apr 2012 21:29:40 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from mail-lpp01m010-f54.google.com (mail-lpp01m010-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id 5C2438FC0A for ; Sat, 14 Apr 2012 21:29:40 +0000 (UTC) Received: by lagv3 with SMTP id v3so4038197lag.13 for ; Sat, 14 Apr 2012 14:29:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=9r+G8va3B9aT9oyLiT/4gx9ASJ6EyceKA0ML2a8WIL8=; b=Eo7ZX+kL6IQegWPUR802scicZ4uGCIxEs+CNnwjNj1oXo3Bk+2asLeMR2ayYnC3yOl Xjy355rV9mlhXVQv4L/y1ino1c6ltvMoe7buaMJxujsdaPmmLMGqWHzFSoJgru/aRqBy WA18eU9FQ3PJ1y9NqPgMgPB0eWaB5HDmpet8DWTYFdVX7bQNGZPKn3u/XeMSfavYI+rr 0HAmYaZOpByiKE8qDhywSrCHlw3X/dHEBXo4a6nSPje5PcvHVvRD1NSSPvXW6pc77cYB a8NdigxY4Qx7jkXvc+Q8WriFmRJM+92odvZ6POc/4qDKr7ARLV4w+58qODqfZgsJRiWo p8Hg== MIME-Version: 1.0 Received: by 10.112.37.132 with SMTP id y4mr2879786lbj.8.1334438973005; Sat, 14 Apr 2012 14:29:33 -0700 (PDT) Sender: asmrookie@gmail.com Received: by 10.112.93.138 with HTTP; Sat, 14 Apr 2012 14:29:32 -0700 (PDT) In-Reply-To: <1334333913.65753.YahooMailNeo@web193204.mail.sg3.yahoo.com> References: <1334333913.65753.YahooMailNeo@web193204.mail.sg3.yahoo.com> Date: Sat, 14 Apr 2012 22:29:32 +0100 X-Google-Sender-Auth: M2vlHzCFKWnSWYAcYCuBmbSzRbM Message-ID: From: Attilio Rao To: Mahesh Babu Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-hackers@freebsd.org" Subject: Re: Regarding core disable in FreeBSD 9 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Apr 2012 21:29:40 -0000 Il 13 aprile 2012 17:18, Mahesh Babu ha scritto: > How to disable a particular core in FreeBSD 9? > How to enable it again? You can disable specific core at boot time by using the tunable: hint.lapic.X.disabled=1 where X is the APIC ID of the CPU you want to turn off. Attilio -- Peace can only be achieved by understanding - A. Einstein