From owner-freebsd-current@FreeBSD.ORG Tue Jul 31 20:10:23 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2FA2D16A41B for ; Tue, 31 Jul 2007 20:10:23 +0000 (UTC) (envelope-from phi@evilphi.com) Received: from mail.twinthornes.com (mail.twinthornes.com [65.75.198.147]) by mx1.freebsd.org (Postfix) with ESMTP id 0965213C458 for ; Tue, 31 Jul 2007 20:10:23 +0000 (UTC) (envelope-from phi@evilphi.com) Received: from [10.9.70.101] (pool-72-90-106-233.ptldor.fios.verizon.net [72.90.106.233]) by mail.twinthornes.com (Postfix) with ESMTP id 85B614D8; Tue, 31 Jul 2007 12:42:01 -0700 (PDT) Message-ID: <46AF9074.30803@evilphi.com> Date: Tue, 31 Jul 2007 12:41:40 -0700 From: Darren Pilgrim User-Agent: Thunderbird 1.5.0.12 (Windows/20070509) MIME-Version: 1.0 To: Gardner Bell References: <172019.94794.qm@web88014.mail.re2.yahoo.com> In-Reply-To: <172019.94794.qm@web88014.mail.re2.yahoo.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Tue, 31 Jul 2007 20:58:22 +0000 Cc: freebsd-current@freebsd.org Subject: Re: High interrupt count on irq12 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Jul 2007 20:10:23 -0000 Gardner Bell wrote: > Since I installed -CURRENT, I've noticed irq12 has a rather high > interrupt count for only 29mins of uptime. Interrupt load appears to > be rather low at only 0.4% so I'm not sure what can be causing the high > count. Here is the output of vmstat. > > dan@home$ vmstat -i > interrupt total rate > irq1: atkbd0 3011 1 > irq12: psm0 121265 61 > irq14: ata0 58 0 > irq19: uhci1+ 5181 2 > irq20: fxp0 1377 0 > irq22: pcm0 11 0 > cpu0: timer 3812581 1923 > cpu1: timer 3812247 1923 > Total 7755731 3913 > > My kernel is pretty much GENERIC except for the removal of drivers that > I don't use/need, WITNESS, and INVARIANTS. Nothing wrong with that number unless you don't use the mouse. Mice generate anywhere from dozens to hundreds of interrupts per second depending on the hardware type port settings. An hour's worth of regular desktop usage could easily generate the amount shown above. -- Darren Pilgrim