Date: Mon, 11 Aug 2014 07:08:15 +0000 From: "Eggert, Lars" <lars@netapp.com> To: Niu Zhixiong <kaiaixi@gmail.com> Cc: Michael Tuexen <Michael.Tuexen@lurchi.franken.de>, John-Mark Gurney <jmg@funkthat.com>, Bill Yuan <bycn82@gmail.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: A problem on TCP in High RTT Environment. Message-ID: <17A804F3-BEA6-46F4-887F-B68750618FD9@netapp.com> In-Reply-To: <CAOENNMA-dwPQr53bM4rzC=1eitoi-JAB4mCGx4zybFwUC=GMNg@mail.gmail.com> References: <CAOENNMA_CiBDJc0kchzUbTcf_JBwTJPF=PdBAUB6FPo-KzYkeQ@mail.gmail.com> <20140809184232.GF83475@funkthat.com> <8AE1AC56-D52F-4F13-AAA3-BB96042B37DD@lurchi.franken.de> <20140809204500.GG83475@funkthat.com> <3F6BC212-4223-4AAC-8668-A27075DC55C2@lurchi.franken.de> <CAOENNMCPuiYS7LHwMfOczhZ4yisjGkpOmWzv2pcAoi9Hhzb7dw@mail.gmail.com> <20140810022350.GI83475@funkthat.com> <CAOENNMB3=FZx5kSHVPDPBTtMKbmYJ=c_XNMcuYuoLPe=6U%2Bkxg@mail.gmail.com> <CAOENNMARg36KH1Y%2B0wG8pd7sSf8XKnMf6g790_KiKaj3Mdwyjw@mail.gmail.com> <20140810033212.GL83475@funkthat.com> <CAOENNMA-dwPQr53bM4rzC=1eitoi-JAB4mCGx4zybFwUC=GMNg@mail.gmail.com>
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--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 <kaiaixi@gmail.com> 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--
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