From owner-freebsd-net@freebsd.org Tue May 29 14:02:30 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B464CF7F115 for ; Tue, 29 May 2018 14:02:30 +0000 (UTC) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: from pdx.rh.CN85.dnsmgr.net (br1.CN84in.dnsmgr.net [69.59.192.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3A7476C4BA for ; Tue, 29 May 2018 14:02:30 +0000 (UTC) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: from pdx.rh.CN85.dnsmgr.net (localhost [127.0.0.1]) by pdx.rh.CN85.dnsmgr.net (8.13.3/8.13.3) with ESMTP id w4TE2R3f065518; Tue, 29 May 2018 07:02:27 -0700 (PDT) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: (from freebsd-rwg@localhost) by pdx.rh.CN85.dnsmgr.net (8.13.3/8.13.3/Submit) id w4TE2RMe065517; Tue, 29 May 2018 07:02:27 -0700 (PDT) (envelope-from freebsd-rwg) From: "Rodney W. Grimes" Message-Id: <201805291402.w4TE2RMe065517@pdx.rh.CN85.dnsmgr.net> Subject: Re: GRE/gif/netgraph tunnel speed on 10Gbit channel In-Reply-To: <20180529130553.GA60437@hell.ukr.net> To: Vitalij Satanivskij Date: Tue, 29 May 2018 07:02:27 -0700 (PDT) CC: "Muenz, Michael" , freebsd-net@freebsd.org X-Mailer: ELM [version 2.4ME+ PL121h (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 May 2018 14:02:30 -0000 > Am 29.05.2018 um 13:33 schrieb Vitalij Satanivskij: > > MM> Can you try MTU 1400 on GRE0 and MSS of 1300 just for testing? > MM> With this values I get 4600Mbit sending and 1400Mbit receiving with > MM> iperf and 10 parallel streams. > MM> > > UUUPSS looks like i have problem with metodology > > I'm use iperf3 and even with -P10 or run's in parallel (on diferents ports) it show summary of +-2gbits max Iperf3 is known not to do Parallel well: -P, --parallel n number of parallel client streams to run. Note that iperf3 is single threaded, so if you are CPU bound, this will not yield higher throughput. I suggest using iperf for -P tests that cause the single thread of iperf3 to become CPU bound. > > While iperf v2 show 4+gbit's > > [ ID] Interval Transfer Bandwidth > [ 11] 0.0- 0.0 sec 0.00 Bytes 0.00 bits/sec > [ 10] 0.0-20.0 sec 910 MBytes 382 Mbits/sec > [ 9] 0.0-20.0 sec 503 MBytes 211 Mbits/sec > [ 8] 0.0-20.0 sec 1.66 GBytes 714 Mbits/sec > [ 12] 0.0-20.0 sec 2.25 GBytes 965 Mbits/sec > [ 7] 0.0-20.0 sec 368 MBytes 154 Mbits/sec > [ 6] 0.0-20.0 sec 1.90 GBytes 815 Mbits/sec > [ 5] 0.0-20.0 sec 900 MBytes 378 Mbits/sec > [ 4] 0.0-20.0 sec 833 MBytes 349 Mbits/sec > [ 3] 0.0-20.0 sec 1.11 GBytes 478 Mbits/sec > [SUM] 0.0-20.0 sec 10.4 GBytes 4.44 Gbits/sec > > > It's very strange for me but at last it mutch more beter. > > Ok now question is - which maximum speed we can get from gre on 10Gbit link's. ^) -- Rod Grimes rgrimes@freebsd.org