Date: Thu, 28 Apr 2016 21:06:28 +0200 From: Luigi Rizzo <rizzo@iet.unipi.it> To: bazzoola <bazzoola@gmail.com> Cc: Navdeep Parhar <np@freebsd.org>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: netmap overrun counters Message-ID: <CA%2BhQ2%2Bj%2BQyOTfKHhkp3KRQsD7aTdA=o4rQAZ_hnYXB8_x9py6Q@mail.gmail.com> In-Reply-To: <863506de-870e-0da4-81d3-6ab537feaa2b@gmail.com> References: <cd306a81-3a4b-6386-a059-73d455d3c931@gmail.com> <9fd88731-2cdf-a6da-4b4e-f97bb120696a@FreeBSD.org> <863506de-870e-0da4-81d3-6ab537feaa2b@gmail.com>
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On Thursday, April 28, 2016, bazzoola <bazzoola@gmail.com> wrote: > > > On 04/28/2016 11:35 AM, Navdeep Parhar wrote: > > On 04/28/2016 11:13, bazzoola wrote: > >> Hi! > >> > >> Two questions: > >> > >> (1) Is there a way to know when netmap rx rings overrun? Most NIC > >> drivers provide MPC (missed packet count) and sysctl for rx_overrun. > >> > >> I would like to know if my application is not reading as fast, i.e., no > >> frames are being dropped. > > > > A NIC's hardware counters don't distinguish between netmap or normal > > operation so you can monitor the existing sysctls for rx drops/overruns. > > > > Regards, > > Navdeep > > > > Navdeep, > > I am not asking about NIC's ring overrun. As you know netmap has its own > rings. Is there a way to know if netmap's rx ring overrun? Overruns by definition can only be counted by the NIC Cheers Luigi > > Thanks for your input. > _______________________________________________ > freebsd-net@freebsd.org <javascript:;> mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org > <javascript:;>" > -- -----------------------------------------+------------------------------- Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione http://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL +39-050-2217533 . via Diotisalvi 2 Mobile +39-338-6809875 . 56122 PISA (Italy) -----------------------------------------+-------------------------------
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