From owner-freebsd-questions@FreeBSD.ORG Thu Oct 9 21:50:10 2008 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 5082310656B0 for ; Thu, 9 Oct 2008 21:50:10 +0000 (UTC) (envelope-from erikt@midgard.homeip.net) Received: from ch-smtp01.sth.basefarm.net (ch-smtp01.sth.basefarm.net [80.76.149.212]) by mx1.freebsd.org (Postfix) with ESMTP id D07DC8FC12 for ; Thu, 9 Oct 2008 21:50:09 +0000 (UTC) (envelope-from erikt@midgard.homeip.net) Received: from c83-255-48-78.bredband.comhem.se ([83.255.48.78]:55080 helo=falcon.midgard.homeip.net) by ch-smtp01.sth.basefarm.net with esmtp (Exim 4.68) (envelope-from ) id 1Ko3OU-0007sa-6C for freebsd-questions@freebsd.org; Thu, 09 Oct 2008 23:50:07 +0200 Received: (qmail 78855 invoked from network); 9 Oct 2008 23:49:54 +0200 Received: from owl.midgard.homeip.net (10.1.5.7) by falcon.midgard.homeip.net with ESMTP; 9 Oct 2008 23:49:54 +0200 Received: (qmail 31738 invoked by uid 1001); 9 Oct 2008 23:49:54 +0200 Date: Thu, 9 Oct 2008 23:49:54 +0200 From: Erik Trulsson To: Zahemszky =?iso-8859-1?Q?G=E1bor?= Message-ID: <20081009214954.GA31617@owl.midgard.homeip.net> References: <20081009225136.6ca47d3b@Picasso.Zahemszky.HU> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20081009225136.6ca47d3b@Picasso.Zahemszky.HU> User-Agent: Mutt/1.5.18 (2008-05-17) X-Originating-IP: 83.255.48.78 X-Scan-Result: No virus found in message 1Ko3OU-0007sa-6C. X-Scan-Signature: ch-smtp01.sth.basefarm.net 1Ko3OU-0007sa-6C 44bc118142cda57a27ff60ff98a101a4 Cc: freebsd-questions@freebsd.org Subject: Re: irq256 ???? 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, 09 Oct 2008 21:50:10 -0000 On Thu, Oct 09, 2008 at 10:51:36PM +0200, Zahemszky G=E1bor wrote: > Hi! >=20 > I've just found in my machine's vmstat -i output: >=20 > =3D=3D=3D > $ vmstat -i > interrupt total rate > irq1: atkbd0 15524 0 > irq6: fdc0 14 0 > irq12: psm0 279947 16 > irq15: ata1 41835 2 > irq16: uhci0 drm0 1407076 81 > irq17: atapci0 257828 14 > irq19: fwohci0++ 16 0 > irq21: uhci1 ahc0+ 41712 2 > irq22: pcm0 52848 3 > irq23: uhci2 ehci1 1 0 > cpu0: timer 33503897 1929 >=20 >=20 > irq256: em0 42054 2 >=20 > =3D=3D=3D^ >=20 > cpu1: timer 33495040 1928 > Total 69137792 3981 > $ dmesg|fgrep em0 > em0: port 0x30c0-0x30df > mem 0x90300000-0x9031ffff,0x90324000-0x90324fff irq 20 at device 25.0 on = pci0=20 > em0: Using MSI interrupt em0: [FILTER] > em0: Ethernet address: 00:19:d1:25:78:0a > $ uname -a > FreeBSD XXX 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #0: Thu Oct 2 21:35:45= CEST 2008 > root@XXX:/usr/obj/usr/src/sys/GENERIC i386 $=20 > =3D=3D=3D=3D >=20 > What's that? (world and kernel are in sync) It is an MSI-style interrupt [MSI=3DMessage Signaled Interrupt] (available = on PCI-E devices and a few PCI/PCI-X devices.) They get allocated fake irq-numbers starting at 256. I.e. it is a feature, and a bug or indication of any problem. --=20 Erik Trulsson ertr1013@student.uu.se