From owner-freebsd-virtualization@freebsd.org Wed May 31 21:32:40 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 E7251B9527B for ; Wed, 31 May 2017 21:32:40 +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 D4A646AB66 for ; Wed, 31 May 2017 21:32:40 +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 v4VLWeNl064219 for ; Wed, 31 May 2017 21:32:40 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: Wed, 31 May 2017 21:32:40 +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: cc 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: Wed, 31 May 2017 21:32:41 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219672 Maxim Masiutin changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |max@ritlabs.com --- Comment #1 from Maxim Masiutin --- It should be emphasized that the speed drops are very significant. I have done tests on a gigabit internet connection from our server to a ser= ver of our ISP: with LRO disabled ping: 2.01ms, download: 235.13 Mbps, upload 410.41 Mbps with LRO enabled ping: 2.01ms, download: 149.73 Mbps, upload 0.80 Mbps Ping remained the same and download almost the same, but upload dropped from 410 Mbps to 0.80 Mbps - 512 times drop! And remote desktop connections are practically unusable, with frequent connection drops. I suspect that there is a bug, because if it would have been a simple misconfiguration, the speed drop would not have been so huge. --=20 You are receiving this mail because: You are the assignee for the bug.=