Date: Mon, 11 Aug 2014 15:32:01 +0800 From: Niu Zhixiong <kaiaixi@gmail.com> To: "Eggert, Lars" <lars@netapp.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: <CAOENNMCbY3L%2BCXn1DFSwhUtMb7xXVeEhPWYLHdy4c8A%2BStPNOA@mail.gmail.com> In-Reply-To: <17A804F3-BEA6-46F4-887F-B68750618FD9@netapp.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> <17A804F3-BEA6-46F4-887F-B68750618FD9@netapp.com>
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Thanks for your reminding. I tried hw.igb.num_queues=3D2 just now. But, the throughput is still slow. And When I tested same things in my Virtual machine-based environment(use Virtio), the throughput is similar(SCTP is 2x than TCP). Regards, Niu Zhixiong =EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF= =BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D=EF=BC=8D kaiaixi@gmail.com On Mon, Aug 11, 2014 at 3:08 PM, Eggert, Lars <lars@netapp.com> wrote: > 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 sor= t of > useful connectivity. On another machine, I had to severely bump > kern.ipc.nmbclusters & friends. I'm not sure this is the issue here, sinc= e > SCTP seems to be working OK, but I'm not trusting igb NICs at the moment. > > Lars >
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