From owner-freebsd-net@FreeBSD.ORG Mon Aug 11 07:08:50 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5D440E6B for ; Mon, 11 Aug 2014 07:08:50 +0000 (UTC) Received: from mx1.netapp.com (mx1.netapp.com [216.240.18.38]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "mx1.netapp.com", Issuer "VeriSign Class 3 Secure Server CA - G3" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 13CCA27DA for ; Mon, 11 Aug 2014 07:08:49 +0000 (UTC) X-IronPort-AV: E=Sophos;i="5.01,839,1400050800"; d="asc'?scan'208";a="338346448" Received: from vmwexceht05-prd.hq.netapp.com ([10.106.77.35]) by mx1-out.netapp.com with ESMTP; 11 Aug 2014 00:08:43 -0700 Received: from HIOEXCMBX03-PRD.hq.netapp.com (10.122.105.36) by vmwexceht05-prd.hq.netapp.com (10.106.77.35) with Microsoft SMTP Server (TLS) id 14.3.123.3; Mon, 11 Aug 2014 00:08:17 -0700 Received: from HIOEXCMBX07-PRD.hq.netapp.com (10.122.105.40) by hioexcmbx03-prd.hq.netapp.com (10.122.105.36) with Microsoft SMTP Server (TLS) id 15.0.913.22; Mon, 11 Aug 2014 00:08:15 -0700 Received: from HIOEXCMBX07-PRD.hq.netapp.com ([::1]) by hioexcmbx07-prd.hq.netapp.com ([fe80::f0de:b572:dd26:36b5%21]) with mapi id 15.00.0913.011; Mon, 11 Aug 2014 00:08:15 -0700 From: "Eggert, Lars" To: Niu Zhixiong Subject: Re: A problem on TCP in High RTT Environment. Thread-Topic: A problem on TCP in High RTT Environment. Thread-Index: AQHPswaXaqmGo9mF3Ua6+epBNevn4ZvJEqcAgAATYoCAAA7VAIAAA8CAgABXqQCAAANCAP//lMnkgAB+UQCAAASwAIAByiAA Date: Mon, 11 Aug 2014 07:08:15 +0000 Message-ID: <17A804F3-BEA6-46F4-887F-B68750618FD9@netapp.com> References: <20140809184232.GF83475@funkthat.com> <8AE1AC56-D52F-4F13-AAA3-BB96042B37DD@lurchi.franken.de> <20140809204500.GG83475@funkthat.com> <3F6BC212-4223-4AAC-8668-A27075DC55C2@lurchi.franken.de> <20140810022350.GI83475@funkthat.com> <20140810033212.GL83475@funkthat.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.1878.6) x-originating-ip: [10.122.56.79] Content-Type: multipart/signed; boundary="Apple-Mail=_BBD29890-D3AB-4597-8701-FC64BF565A91"; protocol="application/pgp-signature"; micalg=pgp-sha1 MIME-Version: 1.0 Cc: Michael Tuexen , John-Mark Gurney , Bill Yuan , "freebsd-net@freebsd.org" X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18 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, 11 Aug 2014 07:08:50 -0000 --Apple-Mail=_BBD29890-D3AB-4597-8701-FC64BF565A91 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi, On 2014-8-10, at 5:48, Niu Zhixiong wrote: > I am using Intel I350-T4 NIC. igb driver? I've been having weird issues with this driver under 10-RELEASE, too. On = one machine, I had to limit hw.igb.num_queues=3D2 in order to get any = sort of useful connectivity. On another machine, I had to severely bump = kern.ipc.nmbclusters & friends. I'm not sure this is the issue here, = since SCTP seems to be working OK, but I'm not trusting igb NICs at the = moment. Lars --Apple-Mail=_BBD29890-D3AB-4597-8701-FC64BF565A91 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----- iQCVAwUBU+hr+NZcnpRveo1xAQJ26gP+MJIgZKg2Y9ztDnCkU4yU1CROwWoo16jt 9eMePs9YZyZ3ryh6s8Et7h8wxHdnvnEeH9mptrqKTC+gJwgjLyfU9CGEEqsQ24af 17J4dIf8Kbr4Xui6x2rukiQ/w96N9BL+p5lfWnP4zmDWOAjA9gUcHUElP1lII/bp klNdHOy0Tqo= =ocLP -----END PGP SIGNATURE----- --Apple-Mail=_BBD29890-D3AB-4597-8701-FC64BF565A91--