From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55944) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fUloD-0006JU-Ea for qemu-devel@nongnu.org; Mon, 18 Jun 2018 00:30:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fUlo7-00054M-Hp for qemu-devel@nongnu.org; Mon, 18 Jun 2018 00:30:29 -0400 Received: from indium.canonical.com ([91.189.90.7]:59512) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fUlo7-00053X-Ao for qemu-devel@nongnu.org; Mon, 18 Jun 2018 00:30:23 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1fUlo6-0004RT-B6 for ; Mon, 18 Jun 2018 04:30:22 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 52B332E802E for ; Mon, 18 Jun 2018 04:30:22 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Mon, 18 Jun 2018 04:17:38 -0000 From: Launchpad Bug Tracker <1228285@bugs.launchpad.net> Reply-To: Bug 1228285 <1228285@bugs.launchpad.net> Sender: bounces@canonical.com References: <20130920172123.20190.55970.malonedeb@wampee.canonical.com> Message-Id: <152929545901.23342.13254026854170505639.malone@loganberry.canonical.com> Errors-To: bounces@canonical.com Subject: [Qemu-devel] [Bug 1228285] Re: e1000 nic TCP performances List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org [Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete =3D> Expired -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1228285 Title: e1000 nic TCP performances Status in QEMU: Expired Bug description: Hi, Here is the context : $ qemu -name A -m 1024 -net nic vlan=3D0,model=3De1000 -net socket,vlan= =3D0,listen=3D127.0.0.1:7000 $ qemu -name B -m 1024 -net nic vlan=3D0,model=3De1000 -net socket,vlan= =3D0,connect=3D127.0.0.1:7000 The bandwidth is really tiny : . Iperf3 reports about 30 Mb/sec . NetPerf reports about 50 Mb/sec = With UDP sockets, there is no problem at all : . Iperf3 reports about 1 Gb/sec . NetPerf reports about 950 Mb/sec = I've noticed this fact only with the e1000 NIC, not with others (rtl8139,= virtio, etc.) I've used the main GIT version of QEMU. = Thanks in advance. See you, VInce To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1228285/+subscriptions