From owner-freebsd-virtualization@FreeBSD.ORG Fri Apr 11 19:49:07 2014 Return-Path: Delivered-To: virtualization@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 179CDADC for ; Fri, 11 Apr 2014 19:49:07 +0000 (UTC) Received: from mouf.net (mouf.net [IPv6:2607:fc50:0:4400:216:3eff:fe69:33b3]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mouf.net", Issuer "mouf.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id CC72E15CA for ; Fri, 11 Apr 2014 19:49:06 +0000 (UTC) Received: from mouf.net (swills@mouf [199.48.129.64]) by mouf.net (8.14.5/8.14.5) with ESMTP id s3BJmu6d060929 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Fri, 11 Apr 2014 19:49:01 GMT (envelope-from swills@mouf.net) Received: (from swills@localhost) by mouf.net (8.14.5/8.14.5/Submit) id s3BJmuaT060928 for virtualization@FreeBSD.org; Fri, 11 Apr 2014 19:48:56 GMT (envelope-from swills) Date: Fri, 11 Apr 2014 19:48:56 +0000 From: Steve Wills To: virtualization@FreeBSD.org Subject: pinning CPUs in bhyve Message-ID: <20140411194855.GA59594@mouf.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.22 (2013-10-16) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (mouf.net [199.48.129.64]); Fri, 11 Apr 2014 19:49:01 +0000 (UTC) X-Spam-Status: No, score=0.0 required=4.5 tests=none autolearn=unavailable version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mouf.net X-Virus-Scanned: clamav-milter 0.98.1 at mouf.net X-Virus-Status: Clean X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Apr 2014 19:49:07 -0000 Hi, Can someone help me understand the cpu pinning feature in bhyve? I'm afraid the docs have confused me: -p pinnedcpu Force guest virtual CPUs to be pinned to host CPUs. Virtual CPU n is pinned to host CPU pinnedcpu+n. What would the arg looks like? Something like -p 0,1,2,3 ? Also, is there like to be much or any benefit from it? Thanks, Steve