Date: Thu, 19 Apr 2012 12:26:42 -0700 From: Sean Bruno <seanbru@yahoo-inc.com> To: Jack Vogel <jfvogel@gmail.com> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Luigi Rizzo <rizzo@iet.unipi.it>, John Baldwin <jhb@freebsd.org> Subject: Re: igb(4) Raising IGB_MAX_RXD ?? Message-ID: <1334863602.4126.9.camel@powernoodle-l7.corp.yahoo.com> In-Reply-To: <CAFOYbcnXGM7ZMht5_LGp%2B7JJ9s4-8_NTdzx-U4pPLDcspUApMA@mail.gmail.com> References: <1334705064.4486.23.camel@powernoodle-l7.corp.yahoo.com> <1334767746.3466.6.camel@powernoodle-l7.corp.yahoo.com> <1334792417.19343.11.camel@powernoodle-l7.corp.yahoo.com> <201204190822.31010.jhb@freebsd.org> <CAFOYbcnXGM7ZMht5_LGp%2B7JJ9s4-8_NTdzx-U4pPLDcspUApMA@mail.gmail.com>
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On Thu, 2012-04-19 at 07:09 -0700, Jack Vogel wrote: > OH, well that's interesting to know, thanks John. > > Jack > Front end box looks pretty happy today at 8k descriptors. http://people.freebsd.org/~sbruno/igb_8k_stats.txt Under peak, we're approaching 20MBytes/sec in and out of the interface. :-) Nifty. -bash-4.2$ netstat 1 input (Total) output packets errs idrops bytes packets errs bytes colls 59542 0 0 18189602 59131 0 19884085 0 58941 0 0 18036651 58673 0 19702671 0 58790 0 0 18069235 58422 0 19897858 0 58226 0 0 17948175 57969 0 19648810 0 58689 0 0 18167855 58479 0 19909843 0 58633 0 0 17952951 58437 0 19760197 0 61019 0 0 18779030 60592 0 20394481 0 56696 0 0 17647407 56552 0 19261155 0 58853 0 0 18186019 58530 0 19886197 0 58739 0 0 18314790 58768 0 20165654 0 58748 0 0 18267243 58539 0 20016668 0 58672 0 0 17914657 58378 0 19558833 0 59885 0 0 18332641 59780 0 20239241 0 We're going to crank one server up to 8 igb queues and hw.igb.max_rxd/txd to 32k and see what blows up. Sean
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