From owner-freebsd-net@FreeBSD.ORG Mon Aug 11 19:41:07 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 23E1FDC9 for ; Mon, 11 Aug 2014 19:41:07 +0000 (UTC) Received: from mx12.netapp.com (mx12.netapp.com [216.240.18.77]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "mx12.netapp.com", Issuer "VeriSign Class 3 International Server CA - G3" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id CA96928F4 for ; Mon, 11 Aug 2014 19:41:06 +0000 (UTC) X-IronPort-AV: E=Sophos;i="5.01,843,1400050800"; d="asc'?scan'208";a="181332348" Received: from vmwexceht06-prd.hq.netapp.com ([10.106.77.104]) by mx12-out.netapp.com with ESMTP; 11 Aug 2014 12:41:05 -0700 Received: from HIOEXCMBX06-PRD.hq.netapp.com (10.122.105.39) by vmwexceht06-prd.hq.netapp.com (10.106.77.104) with Microsoft SMTP Server (TLS) id 14.3.123.3; Mon, 11 Aug 2014 12:40:37 -0700 Received: from HIOEXCMBX07-PRD.hq.netapp.com (10.122.105.40) by hioexcmbx06-prd.hq.netapp.com (10.122.105.39) with Microsoft SMTP Server (TLS) id 15.0.913.22; Mon, 11 Aug 2014 12:40:25 -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 12:40:24 -0700 From: "Eggert, Lars" To: Michael Tuexen 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+UQCAAASwAIAByiAAgAACkYCAAFJhAIAAeY2AgAADqYA= Date: Mon, 11 Aug 2014 19:40:24 +0000 Message-ID: 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> <17A804F3-BEA6-46F4-887F-B68750618FD9@netapp.com> <0CF85443-26AC-4931-9D00-3396C18C7690@lurchi.franken.de> <7A4120EE-60F3-4D32-89C4-C694B8DFEAE4@netapp.com> <5E8A6382-7096-495A-907C-86CE26A163A2@lurchi.franken.de> In-Reply-To: <5E8A6382-7096-495A-907C-86CE26A163A2@lurchi.franken.de> 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: [10.120.60.36] Content-Type: multipart/signed; boundary="Apple-Mail=_AE6527FD-6380-4027-8A3F-C288BC009E0E"; protocol="application/pgp-signature"; micalg=pgp-sha1 MIME-Version: 1.0 Cc: "freebsd-net@freebsd.org" , John-Mark Gurney , Niu Zhixiong , Bill Yuan 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 19:41:07 -0000 --Apple-Mail=_AE6527FD-6380-4027-8A3F-C288BC009E0E Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi, On 2014-8-11, at 21:27, Michael Tuexen = wrote: > On 11 Aug 2014, at 14:12, Eggert, Lars wrote: >> 544/57/8194 requests for mbufs denied (mbufs/clusters/mbuf+clusters) > I guess the above is the problem. The card wants a lot of mbufs... > So the problem should go away if you increase the number of = mbufs/clusters, > which means no requests are denied and you don't experience any = performance > issue. And I have six of those ports in that box... So I bump kern.ipc.nmbclusters? Any additional sysctls I should bump? Thanks, Lars --Apple-Mail=_AE6527FD-6380-4027-8A3F-C288BC009E0E 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+kcQ9ZcnpRveo1xAQLaRQP/RUpRTNYwhG6nWv+Tkz4XYPUsZwtoaFL3 zm8+MRmvsy1ZjVDKgijzGPpcLkfs7btYaj4DektXsyWFTDy0s8oAytDX7Vd6k8Ip TXsWJ0BZaiY7N6stcfDo+zgR2JtArm2ugOqOCCJo0m+Bh8AdYwvUJWHor556tcsV CpTGC5E6htE= =rihH -----END PGP SIGNATURE----- --Apple-Mail=_AE6527FD-6380-4027-8A3F-C288BC009E0E--