From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail02.rohde-schwarz.com (mail02.rohde-schwarz.com [80.246.32.97]) by dpdk.org (Postfix) with ESMTP id 57A101D8A for ; Wed, 22 Nov 2017 12:34:56 +0100 (CET) Received: from amu316.rsint.net ([10.0.26.65]) by mail02.rohde-schwarz.com with ESMTP id 2017112212345494-13950 ; Wed, 22 Nov 2017 12:34:54 +0100 Received: from rus19.rsint.net ([10.0.33.19]) by amu316.rsint.net (Totemo SMTP Server) with SMTP ID 268 for ; Wed, 22 Nov 2017 12:34:54 +0100 (CET) To: users@dpdk.org MIME-Version: 1.0 X-KeepSent: D9ABC848:5FA8BA7E-C12581E0:003F59C6; type=4; flags=0; name=$KeepSent X-Mailer: IBM Notes Release 9.0.1FP7 August 18, 2016 From: Heiko.Haase@rohde-schwarz.com X-RUS_SENSITIVITY: 10 X-TNEFEvaluated: 1 Message-ID: Date: Wed, 22 Nov 2017 12:34:52 +0100 X-MIMETrack: Itemize by SMTP Server on RSSMTP02/RSSMTP at 22.11.2017 12:34:54, Serialize by Router on RSSMTP02/RSSMTP at 22.11.2017 12:34:55, Serialize complete at 22.11.2017 12:34:55 Content-Type: text/plain; charset="US-ASCII" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] i40e XL710 VF low latency reception and interrupt throttling 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: Wed, 22 Nov 2017 11:34:56 -0000 Hi, I am trying to receive packets as fast as possible with DPDK PMD. Sometimes packets arrive within a few microseconds , which is fine, sometimes packets arrive only after approx. 8 milliseconds. This seems to be due to interrupt throttling configured in the VF driver. Does anyone know a way to configure the interrupt throttling or how to turn it off. My setup: Intel XL710 NIC, i40e pmd driver, DPDK uses VF, PF is mapped to Linux kernel. DPDK 17.11 Thanks Heiko