From owner-freebsd-questions@FreeBSD.ORG Thu Dec 15 17:39:47 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BC7081065675 for ; Thu, 15 Dec 2011 17:39:47 +0000 (UTC) (envelope-from apseudoutopia@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 458A78FC18 for ; Thu, 15 Dec 2011 17:39:46 +0000 (UTC) Received: by lahl5 with SMTP id l5so1603361lah.13 for ; Thu, 15 Dec 2011 09:39:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=Gvq/IsxJvyKtE6yDv+53chYXpkM0RBR+OCgJT8tJ/X8=; b=CmNCex7uefey/v9vn1hOARm0k8vcf1DhEKPHiFnUFvMXFsHrOxvBV5iIglv2oaGKOQ HXLeWp88WOlhR0Amsyj3sM23HiQGTNmFeiMfMql3MkVQ7fwIVvlNyU5ZRD8O3XeJeCbD tokD5IX1e/RBcUK4/hgHuF45uR5U+dejP+tfI= MIME-Version: 1.0 Received: by 10.204.145.74 with SMTP id c10mr1767490bkv.62.1323970785766; Thu, 15 Dec 2011 09:39:45 -0800 (PST) Received: by 10.204.36.198 with HTTP; Thu, 15 Dec 2011 09:39:45 -0800 (PST) Date: Thu, 15 Dec 2011 12:39:45 -0500 Message-ID: From: APseudoUtopia To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8 Subject: PF/ALTQ - Stable TSC? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Dec 2011 17:39:47 -0000 Hello, I'm setting up pf with altq support in my kernel on freebsd 9.0-Stable (soon to switch to the -RELEASE once it's available). The system is a quad-core Xeon E31220, running amd64. I've done a bit of googling and found various results. I know the freebsd handbook says ALTQ_NOPCC is required on SMP systems. My kern.timecounter.smp_tsc=1, which says the TSC is safe to use in SMP mode. Is it still required to use ALTQ_NOPCC on _ALL_ smp systems? Basically I'm just seeing very different answers with my own research, which is why I'm posting to this list. Thank you!