From owner-freebsd-net@freebsd.org Thu Mar 17 16:51:04 2016 Return-Path: Delivered-To: freebsd-net@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 73C1DAD41AA for ; Thu, 17 Mar 2016 16:51:04 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [78.47.246.247]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 0911BB76; Thu, 17 Mar 2016 16:51:03 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221]) by hz.grosbein.net (8.14.9/8.14.9) with ESMTP id u2HGoraD042389 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 17 Mar 2016 17:50:53 +0100 (CET) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: vangyzen@FreeBSD.org Received: from [10.58.0.10] (dadvw [10.58.0.10]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id u2HGolar092107 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Thu, 17 Mar 2016 23:50:48 +0700 (KRAT) (envelope-from eugen@grosbein.net) Subject: Re: TSO test To: Eric van Gyzen , Alan Somers , "Pieper, Jeffrey E" References: <2A35EA60C3C77D438915767F458D656880953A88@ORSMSX111.amr.corp.intel.com> <56EACBCF.5020109@FreeBSD.org> Cc: FreeBSD Net , Jack Vogel From: Eugene Grosbein Message-ID: <56EAE066.1010108@grosbein.net> Date: Thu, 17 Mar 2016 23:50:46 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <56EACBCF.5020109@FreeBSD.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,LOCAL_FROM autolearn=no version=3.3.2 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on hz.grosbein.net X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Mar 2016 16:51:04 -0000 17.03.2016 22:22, Eric van Gyzen пишет: > Alan, > > That does sound useful. As one complication, "vmstat -i" shows the > interrupt rate since boot. Either the test would need to reboot between > each iteration, or vmstat would need to be improved to show the "recent" > rate. The latter would be a much welcome improvement, in my humble opinion. vmstat with "-i" option shows interrupts since reboot and without "-i" shows interrupts per interval, look for "in" column under "faults": $ vmstat 1 3 procs memory page disks faults cpu r b w avm fre flt re pi po fr sr ad0 ad1 in sy cs us sy id 0 1 17 9221M 1525M 197 0 0 0 215 119 0 0 1107 106 813 4 3 94 0 1 17 9221M 1525M 0 0 0 0 0 47 0 0 1078 544 2505 0 2 98 0 1 17 9221M 1525M 0 0 0 0 0 47 0 0 1082 509 2468 0 2 97 In this example, there were 107, 87 and 82 interrupts per each of last 3 seconds excluding 1000 clock ("HZ") interrupts.