From owner-freebsd-net@freebsd.org  Mon Aug  7 16:19:39 2017
Return-Path: <owner-freebsd-net@freebsd.org>
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 50978DB3F13
 for <freebsd-net@mailman.ysv.freebsd.org>;
 Mon,  7 Aug 2017 16:19:39 +0000 (UTC)
 (envelope-from matt.joras@gmail.com)
Received: from mail-qk0-f193.google.com (mail-qk0-f193.google.com
 [209.85.220.193])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 0EB78729E7
 for <freebsd-net@freebsd.org>; Mon,  7 Aug 2017 16:19:38 +0000 (UTC)
 (envelope-from matt.joras@gmail.com)
Received: by mail-qk0-f193.google.com with SMTP id d136so883529qkg.3
 for <freebsd-net@freebsd.org>; Mon, 07 Aug 2017 09:19:38 -0700 (PDT)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:subject:to:references:from:message-id:date
 :user-agent:mime-version:in-reply-to:content-transfer-encoding
 :content-language;
 bh=o7MMotHfpFJOWx728xMEv8dbi8EyFDrbTEVXfDbKl6A=;
 b=BxcZtfG5QjR1KXkU+w/TR/wKGoKwdBWwJvcvg9FD2vMx7PWe3tEuIqB34V5WAex5gs
 oYmZFcefJuhYKhzHckZ2YRw3yxUZX+gCE6C2voW7r3IY8puKQt+9C/Qk4TDaXn7Lvvd2
 4JC4QG+GG6A2Pckxn8FS+dw+vgf61eww6uqWSxpi16u3ZXHGktmw9k2VFLja+TLhdewB
 lTrk/xnXeMkjS1z1ewh0PQGkK+vujis/gR1jrgARn5C03sata7m3LSO8O8sAVxvD7WSY
 E5UAQSWPsyXs3IjbnQm7b9MHx7qG8oGJIuIowvDck/wOkYJdX+juaAOybNJOdliKOFIj
 W4KQ==
X-Gm-Message-State: AHYfb5gf2nNin2DvsW6Ls+3KCr2qGfn2mpfDVz+B4P+KiSb0m08Fc52M
 vkTbKO4evC7tOaFsNYU=
X-Received: by 10.55.21.193 with SMTP id 62mr1629881qkv.42.1502122772052;
 Mon, 07 Aug 2017 09:19:32 -0700 (PDT)
Received: from [192.168.2.123] (71-35-178-103.tukw.qwest.net. [71.35.178.103])
 by smtp.gmail.com with ESMTPSA id
 h16sm5382412qke.80.2017.08.07.09.19.30
 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
 Mon, 07 Aug 2017 09:19:31 -0700 (PDT)
Subject: Re: mlx4en, timer irq @100%...
To: Hans Petter Selasky <hps@selasky.org>, Ben RUBSON <ben.rubson@gmail.com>, 
 FreeBSD Net <freebsd-net@freebsd.org>
References: <BF3A3E47-A726-49FB-B83F-666EFC5C0FF1@gmail.com>
 <72b9de84-5572-3737-b274-34d2c5cdf634@selasky.org>
 <91DCB96E-4C08-44C5-94E7-E7C686DEFE5F@gmail.com>
 <c3fdf0bb-833d-915f-c246-9459819cd825@selasky.org>
 <4DF74CB8-23D2-4CCF-B699-5B86DAEA65E5@gmail.com>
 <40602CEA-D417-4E5B-8C68-916958D49A0B@gmail.com>
 <9c306f10-7c05-d28d-e551-a930603aaafa@selasky.org>
From: Matt Joras <mjoras@FreeBSD.org>
Message-ID: <896dd782-cb2c-0259-65d1-b00daae452de@FreeBSD.org>
Date: Mon, 7 Aug 2017 09:19:29 -0700
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101
 Thunderbird/52.1.0
MIME-Version: 1.0
In-Reply-To: <9c306f10-7c05-d28d-e551-a930603aaafa@selasky.org>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Content-Language: en-US
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/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: <https://lists.freebsd.org/mailman/listinfo/freebsd-net>,
 <mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 07 Aug 2017 16:19:39 -0000

On 08/07/2017 09:11, Hans Petter Selasky wrote:
> Hi,
>
> Try to enter "kgdb" and run:
>
> thread apply all bt
>
> Look for the callout function in question.
>
> --HPS
>
If you don't have a way to attach kgdb handy you could also break into
ddb(4) and run "alltrace". Though gdb would be more useful for an
ongoing session if we need more than the backtrace since you could
switch to that thread and investigate it directly.