Date: Mon, 5 Dec 2011 15:08:54 -0800 From: Jack Vogel <jfvogel@gmail.com> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: current@freebsd.org, Daniel Kalchev <daniel@digsys.bg> Subject: Re: datapoints on 10G throughput with TCP ? Message-ID: <CAFOYbcmxaC_5QDmxo%2BtqXpiuyZghX_EMGssnMxJ8AiuONVNUWQ@mail.gmail.com> In-Reply-To: <20111205222834.GA50285@onelab2.iet.unipi.it> References: <20111205192703.GA49118@onelab2.iet.unipi.it> <2D87D847-A2B7-4E77-B6C1-61D73C9F582F@digsys.bg> <20111205222834.GA50285@onelab2.iet.unipi.it>
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You can't get line rate with ixgbe, in what configuration/hardware? We surely do get line rate in validation here, but its sensitive to your hardware and config. Jack On Mon, Dec 5, 2011 at 2:28 PM, Luigi Rizzo <rizzo@iet.unipi.it> wrote: > On Mon, Dec 05, 2011 at 11:15:09PM +0200, Daniel Kalchev wrote: > > > > On Dec 5, 2011, at 9:27 PM, Luigi Rizzo wrote: > > > > > - have two machines connected by a 10G link > > > - on one run "nuttcp -S" > > > - on the other one run "nuttcp -t -T 5 -w 128 -v the.other.ip" > > > > > > > Any particular tuning of FreeBSD? > > actually my point is first to see how good or bad are the defaults. > > I have noticed that setting hw.ixgbe.max_interrupt_rate=0 > (it is a tunable, you need to do it before loading the module) > improves the throughput by a fair amount (but still way below > line rate with 1500 byte packets). > > other things (larger windows) don't seem to help much. > > cheers > luigi > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
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