From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yb0-f172.google.com (mail-yb0-f172.google.com [209.85.213.172]) by dpdk.org (Postfix) with ESMTP id 306902C07 for ; Tue, 13 Dec 2016 10:13:43 +0100 (CET) Received: by mail-yb0-f172.google.com with SMTP id d128so9482003ybh.2 for ; Tue, 13 Dec 2016 01:13:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telaverge-com.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=Xe7s7PZ6PfZKxPM3BRG66+fcZ2ZUqZJ7guD4RsbToac=; b=poJD1/TtgHdrHK7NSFfL7oEg8wdsul5pqJbqobduAichZ2H5W9CuF5j6bweGRT3vi6 O7QVU66IXPo38WHhnUxByyWY6rYRhU55dqPXwXskQyDLmuZx9YQuKPnywQZJa93lxlVk SK9sxZkfFAKAjmUKHv00OIHJvZpJ+mh9vvomXQCE+ltnuxtV9DX/AUry72ZS3S36Ai3L 9inPW/vCWLr/9d2CvQadJLaKrbtheJBIuW4Ay6BTuVxn4n7W+8C1xA/ysbGGheo2g+5a aUp/q1zjj1C/0SOngQBPOBm0frIIVnUBFkdD2IZyH8X8d0wHZhA9QMo8xT33WyKrdn5l XDzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=Xe7s7PZ6PfZKxPM3BRG66+fcZ2ZUqZJ7guD4RsbToac=; b=MTDLZ3VdggBP6JDrryUtNT9ZsErJTpgJhDbXHbQqJiEpUQ1ctYZ/c+lDCNiEfBqQ+a YDcK9YrM2uZI3RXV7HlHuyNsH+KTz9ThGXP8WHSagOxcGMaCcdqw/XCYprTfF+R1jnp9 uoxJv9d0kz9yJLpz9OQ9OBwYsOCYcQ9UMwM6t3togD4D4E3rkDG1JaT/dsDl/ffKihvc K2R6Z5JFyCk/IBgWG9P2rIVnvFk6ZBJPuGVg+87MW1vWkOvL2RbfYjSTlu0jMz9W1XXM SRc6wY8bl8767sCvjunuHlFHi/gsLAUzO3HgjWoi8/zNRPUO4Uzi844z7IkUARvMnsOU HFIA== X-Gm-Message-State: AKaTC01/oE9nsMnc5oaMTmrjVY+CMKa2hbbzvReZvnLIg5jsXy4RQshez97vUWz4f3dvd7zAs9OnRxlBHlYoXw== X-Received: by 10.37.108.8 with SMTP id h8mr51315723ybc.77.1481620422300; Tue, 13 Dec 2016 01:13:42 -0800 (PST) MIME-Version: 1.0 Received: by 10.37.111.4 with HTTP; Tue, 13 Dec 2016 01:13:41 -0800 (PST) X-Originating-IP: [43.224.156.144] From: Prem Chaitanya Date: Tue, 13 Dec 2016 14:43:41 +0530 Message-ID: To: users@dpdk.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] Facing issues with Interrupt mode (IGB,VFIO) X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Dec 2016 09:13:43 -0000 Hi All, We modified the l3fwd application to run in interrupt+poll mode. The driver we used was IGB with Intel I350 NIC. When we ran with 1 lcore and 1 queue, there were no issues. When we tried to run with 2 lcores and 2 Rx-queues we are not getting interrupts. In one of the documentation(DPDK-201.pdf), it was mentioned that IGB driver doesn't support interrupt mode with multiple lcores since it supports only 1 epoll-fd. Can you please confirm if this is the case? Then we went ahead and loaded the VFIO driver and tried to run the same application. Now we get an interrupt once and after that when we go back to waiting on epoll, we dont receive any further interrupts. But when we print the stats for rx-packets we see that there are packets waiting in the NIC Rx queue. Same behavior is observed even when we run application with 1 lcore and 1 Rx queue. We took the output of "/proc/interrupts", and we don't see the interrupt count increasing there either. Looks like interrupt is not getting raised eventhough packets arrive. Would appreciate the help. -- Regards Prem