From owner-freebsd-virtualization@freebsd.org Mon Jul 25 01:48:09 2016 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id ADECBBA4072 for ; Mon, 25 Jul 2016 01:48:09 +0000 (UTC) (envelope-from FreeBSD@shaneware.biz) Received: from ipmail05.adl6.internode.on.net (ipmail05.adl6.internode.on.net [150.101.137.143]) by mx1.freebsd.org (Postfix) with ESMTP id 32A9D1DD3 for ; Mon, 25 Jul 2016 01:48:08 +0000 (UTC) (envelope-from FreeBSD@shaneware.biz) Received: from ppp14-2-37-105.lns21.adl2.internode.on.net (HELO leader.local) ([14.2.37.105]) by ipmail05.adl6.internode.on.net with ESMTP; 25 Jul 2016 11:12:57 +0930 Subject: Re: some bhyve guests showing high load on host To: tech-lists , freebsd-virtualization@freebsd.org References: From: Shane Ambler Message-ID: <57956EA0.3090007@ShaneWare.Biz> Date: Mon, 25 Jul 2016 11:12:56 +0930 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.7.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.22 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: Mon, 25 Jul 2016 01:48:09 -0000 On 25/07/2016 02:10, tech-lists wrote: > Hi, > > Why is WCPU so high? The guests corresponding to these processes are all > linux guests; they aren't showing much load at all (0.05-0.1). Given > this fact, I'm at a loss as to what to debug or how. How are you starting your bhyve's? Are you using the -H option? From man bhyve - -H Yield the virtual CPU thread when a HLT instruction is detected. If this option is not specified, virtual CPUs will use 100% of a host CPU. -- FreeBSD - the place to B...Software Developing Shane Ambler