From owner-freebsd-net@freebsd.org Mon Oct 26 17:41:31 2015 Return-Path: Delivered-To: freebsd-net@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 5F1D3A1EEE1 for ; Mon, 26 Oct 2015 17:41:31 +0000 (UTC) (envelope-from lars@netapp.com) Received: from mx144.netapp.com (mx144.netapp.com [216.240.21.25]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "mx144.netapp.com", Issuer "Symantec Class 3 Secure Server CA - G4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 27B671837 for ; Mon, 26 Oct 2015 17:41:30 +0000 (UTC) (envelope-from lars@netapp.com) X-IronPort-AV: E=Sophos;i="5.20,201,1444719600"; d="asc'?scan'208";a="76267059" Received: from hioexcmbx02-prd.hq.netapp.com ([10.122.105.35]) by mx144-out.netapp.com with ESMTP; 26 Oct 2015 10:40:25 -0700 Received: from HIOEXCMBX07-PRD.hq.netapp.com (10.122.105.40) by hioexcmbx02-prd.hq.netapp.com (10.122.105.35) with Microsoft SMTP Server (TLS) id 15.0.1104.5; Mon, 26 Oct 2015 10:40:25 -0700 Received: from HIOEXCMBX07-PRD.hq.netapp.com ([::1]) by hioexcmbx07-prd.hq.netapp.com ([fe80::e1d9:911e:3048:d510%21]) with mapi id 15.00.1104.000; Mon, 26 Oct 2015 10:40:24 -0700 From: "Eggert, Lars" To: "Pieper, Jeffrey E" CC: Kevin Oberman , "freebsd-net@freebsd.org" , Daniel Engberg Subject: Re: ixl 40G bad performance? Thread-Topic: ixl 40G bad performance? Thread-Index: AQHRDva+ZO+9KY7om02T8EKrgQTcE559lvyAgABhmICAAFavAIAACEoAgAARDQCAABmYAA== Date: Mon, 26 Oct 2015 17:40:24 +0000 Message-ID: References: <5aae0ee63c44627223d5d179f1901d00@pyret.net> <0E4C2D93-FBAF-48CB-A704-499ABFC892B9@netapp.com> <2A35EA60C3C77D438915767F458D6568807F2A8A@ORSMSX111.amr.corp.intel.com> <99E53825-99F8-4E82-A710-6BC07B123F77@netapp.com> <2A35EA60C3C77D438915767F458D6568807F2D52@ORSMSX111.amr.corp.intel.com> In-Reply-To: <2A35EA60C3C77D438915767F458D6568807F2D52@ORSMSX111.amr.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.3096.5) x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.122.56.79] Content-Type: multipart/signed; boundary="Apple-Mail=_B5A770B2-4022-4326-91FB-CB0BE6B08516"; protocol="application/pgp-signature"; micalg=pgp-sha256 MIME-Version: 1.0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Oct 2015 17:41:31 -0000 --Apple-Mail=_B5A770B2-4022-4326-91FB-CB0BE6B08516 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii On 2015-10-26, at 17:08, Pieper, Jeffrey E = wrote: > As a caveat, this was using default netperf message sizes. I get the same ~3 Gb/s with the default netperf sizes and driver 1.4.5. When you tcpdump during the run, do you see TSO/LRO in effect, i.e., do = you see "segments" > 32K in the trace? Lars --Apple-Mail=_B5A770B2-4022-4326-91FB-CB0BE6B08516 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="signature.asc" Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- iQCVAwUBVi5lh9ZcnpRveo1xAQiVAQP7Bj0rWXpPP8i2z7hWTdee+oXd7kxHTbWS N20gwd3WF6AB1/OhkyEr0qKu5rikbijraFI8xM9A+onb/ZC8RfwdUQWx+rG68QfV 02PnWAjeqrVJnXtuPBuXVgXUzYJAVyJY8bmrTqDlTiwdHoMvRsDAtAXVGFJk2UnA m6X89vB1AIA= =sr6A -----END PGP SIGNATURE----- --Apple-Mail=_B5A770B2-4022-4326-91FB-CB0BE6B08516--