From owner-freebsd-net@FreeBSD.ORG  Wed Nov 15 16:24:33 2006
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
X-Original-To: freebsd-net@freebsd.org
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 9E31616A407
	for <freebsd-net@freebsd.org>; Wed, 15 Nov 2006 16:24:33 +0000 (UTC)
	(envelope-from jfvogel@gmail.com)
Received: from nz-out-0102.google.com (nz-out-0102.google.com [64.233.162.194])
	by mx1.FreeBSD.org (Postfix) with ESMTP id ED5EA43D58
	for <freebsd-net@freebsd.org>; Wed, 15 Nov 2006 16:24:32 +0000 (GMT)
	(envelope-from jfvogel@gmail.com)
Received: by nz-out-0102.google.com with SMTP id i11so78119nzh
	for <freebsd-net@freebsd.org>; Wed, 15 Nov 2006 08:24:32 -0800 (PST)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;
	h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	b=sR0023iOczWaBmbkVwARL+rQcJSxOivRHBinLey1RbOMZlqwLluv7TA3z0eMC3bNcGlA+S6+9ymNFdq3xFIA6r6AdCdTZ1t6xbdMx6T5YwqcSN/ILT2S2wytNoUzQUWykG1h7RQCEENQPTHPqTTOfxW5ah/Fy1pAAk62ICtfNr4=
Received: by 10.35.89.10 with SMTP id r10mr3506100pyl.1163607868695;
	Wed, 15 Nov 2006 08:24:28 -0800 (PST)
Received: by 10.35.118.6 with HTTP; Wed, 15 Nov 2006 08:24:28 -0800 (PST)
Message-ID: <2a41acea0611150824q29630455wdbeae231e902456e@mail.gmail.com>
Date: Wed, 15 Nov 2006 08:24:28 -0800
From: "Jack Vogel" <jfvogel@gmail.com>
To: "Miroslav Slavkov" <miroslav@svishtov.net>
In-Reply-To: <20061115134656.8dfe91de@mail.svishtov.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <20061115134656.8dfe91de@mail.svishtov.net>
Cc: freebsd-net@freebsd.org
Subject: Re: em driver - strange behavior
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 15 Nov 2006 16:24:33 -0000

On 11/15/06, Miroslav Slavkov <miroslav@svishtov.net> wrote:
> Hi.
> I've posted some test with the latest em driver in the previous thread "Proposed 6.2 em RELEASE patch"...
> It's working fine.
> Now i see some strange behavior. Machine is Dual Intel Xeon  5110, with SuperMicro X7-DBE mainboard. It has dual port integrated Intel PRO/1000 EB lan card, one Intel 82542 Gigabit Ethernet Controller, and one Intel PRO/1000 PT.
> The problem is the Intel PRO/1000 PT card. All other cards are in use (in production mode), only this card is down and not used right now, but it's generating more interrupts than any other card.
>
> em3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
>         options=b<RXCSUM,TXCSUM,VLAN_MTU>
>         ether 00:15:17:0e:10:90
>         media: Ethernet autoselect
>         status: no carrier
>
>
> output from systat -vm (interrupts/irq/interface):
>  14235 16: em3
>   6214 18: em0
>     914 19: em1
>  13613 24: em2
>
> currently it has around 200Mbit/s total bandwidth on the other cards
>
> system is: FreeBSD 6.2-PRERELEASE #1: Tue Nov 14 17:24:17 EET 2006 amd64
> EM_INTR_FAST is defined in em driver
> no polling
>
> Any clues?

Your description is a bit confusing, is this port ON the motherboard?
If its not in use by the OS but it still shows interrupts I'm suspecting
the management hardware maybe?

Jack