From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: Netperf UDP issue with connected sockets Date: Mon, 28 Nov 2016 10:33:49 -0800 Message-ID: <20730b37-d218-a1bb-d0fb-0f838e2a77b5@hpe.com> References: <20140903165943.372b897b@redhat.com> <1409757426.26422.41.camel@edumazet-glaptop2.roam.corp.google.com> <20161116131609.4e5726b4@redhat.com> <7c4b43a4-74bf-1ee2-6f0d-17783b5d8fcb@hpe.com> <20161116234022.2bad179b@redhat.com> <1479342849.8455.233.camel@edumazet-glaptop3.roam.corp.google.com> <20161117091638.5fab8494@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, brouer@redhat.com To: Jesper Dangaard Brouer , Eric Dumazet Return-path: Received: from g4t3427.houston.hpe.com ([15.241.140.73]:53840 "EHLO g4t3427.houston.hpe.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753809AbcK1Sdv (ORCPT ); Mon, 28 Nov 2016 13:33:51 -0500 In-Reply-To: <20161117091638.5fab8494@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: On 11/17/2016 12:16 AM, Jesper Dangaard Brouer wrote: >> time to try IP_MTU_DISCOVER ;) > > To Rick, maybe you can find a good solution or option with Eric's hint, > to send appropriate sized UDP packets with Don't Fragment (DF). Jesper - Top of trunk has a change adding an omni, test-specific -f option which will set IP_MTU_DISCOVER:IP_PMTUDISC_DO on the data socket. Is that sufficient to your needs? happy benchmarking, rick