From owner-freebsd-virtualization@freebsd.org Thu Jun 15 17:05:35 2017 Return-Path: Delivered-To: freebsd-virtualization@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 932EDD8E2B2 for ; Thu, 15 Jun 2017 17:05:35 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 806757C0E9 for ; Thu, 15 Jun 2017 17:05:35 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v5FH5ZC3052170 for ; Thu, 15 Jun 2017 17:05:35 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 219672] vmxnet3: with LRO enabled under FreeBSD 11 as a router, outgoing speed of forwarded traffic becomes slower Date: Thu, 15 Jun 2017 17:05:35 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: max@ritlabs.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Jun 2017 17:05:35 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219672 --- Comment #6 from Maxim Masiutin --- I agree with your conclusions, but I didn't make the tests that you have suggested : (1. see good performance with LRO turned on and scp a large fil= e to the appliance and 2. see ICMP "need to frag" with LRO turned on and scp to a machine on the remote side.) Since when I use pfSense as a router, and when I ran speed tests on virtual machines that used pfSense as a router, and download speed almost didn't suffer, but upload speed dropped from around 400 MBps to around 0.5 MBps, I suspect that your conclusions are correct. So I agree with you that it was a misconfiguration, not a bug. But I didn't make the tests that you have suggested. I have contacted pfSense developers and asked them to change the notice in = the configuration panel in pfSense. Currently, there is a notice saying that LR= O is disabled by default because "most drivers have bugs". I have asked them to change this to "LRO should only be enabled on an end point". I am sure that= the description of the LRO user interface was the cause of all problems that mi= sled me. I will watch future versions of pfSense and will remind them if they won't change the notice. Don't get me wrong, I'm just a simple user, not a professional sysadmin, and I'm not skilled enough, for example, to see ICMP "need to frag" with LRO tu= rned on and scp to a machine on the remote side. I would have suggested to close this bugtracker entry. Thank you very much again for your help. --=20 You are receiving this mail because: You are the assignee for the bug.=