From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <maxime.coquelin@redhat.com>
Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28])
 by dpdk.org (Postfix) with ESMTP id AB3C92BB9
 for <dev@dpdk.org>; Mon, 19 Dec 2016 09:29:36 +0100 (CET)
Received: from int-mx11.intmail.prod.int.phx2.redhat.com
 (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by mx1.redhat.com (Postfix) with ESMTPS id 16CFDC057FA4;
 Mon, 19 Dec 2016 08:29:36 +0000 (UTC)
Received: from [10.36.116.128] (ovpn-116-128.ams2.redhat.com [10.36.116.128])
 by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with
 ESMTP id uBJ8TXiT017040
 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO);
 Mon, 19 Dec 2016 03:29:35 -0500
To: Sreenaath Vasudevan <sreenaath@viptela.com>, dev@dpdk.org
References: <CANNY8mk5XM1tRyPyEpo4ogypaQKCArqCLjDDK6pK2-DpCDnMdA@mail.gmail.com>
From: Maxime Coquelin <maxime.coquelin@redhat.com>
Message-ID: <ac91d056-1a41-dd67-77ea-85d578ad6f74@redhat.com>
Date: Mon, 19 Dec 2016 09:29:32 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.4.0
MIME-Version: 1.0
In-Reply-To: <CANNY8mk5XM1tRyPyEpo4ogypaQKCArqCLjDDK6pK2-DpCDnMdA@mail.gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16
 (mx1.redhat.com [10.5.110.32]); Mon, 19 Dec 2016 08:29:36 +0000 (UTC)
Subject: Re: [dpdk-dev] Virtio driver lockup in KVM
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Mon, 19 Dec 2016 08:29:36 -0000

Hi Sreenaath,

On 12/19/2016 09:21 AM, Sreenaath Vasudevan wrote:
> Hi
> I am running a DPDK application with virtio driver and ran in to driver rx
> lockup issue.
Are you running vhost-user DPDK backend on host or Kernel backend?

> The application seems to be running fine for couple of hours before it
> stops receiving packets on the interface. Transmission of packets seems to
> work fine on the same interface while reception of packets stop.
> Has anyone run in to anything similar?
Not that I am aware, I would suggest you recompile DPDK with debug,
attach to the DPDK process when it happens and check what PMd threads
are doing.

>
> Following is the environment
> Application runnign dpdk-2.2
> VM running on KVM hypervisor using VIRTIO driver
>

Cheers,
Maxime