Date: Thu, 28 Apr 2016 11:35:08 -0700 From: Navdeep Parhar <np@FreeBSD.org> To: bazzoola <bazzoola@gmail.com>, freebsd-net@freebsd.org Subject: Re: netmap overrun counters Message-ID: <9fd88731-2cdf-a6da-4b4e-f97bb120696a@FreeBSD.org> In-Reply-To: <cd306a81-3a4b-6386-a059-73d455d3c931@gmail.com> References: <cd306a81-3a4b-6386-a059-73d455d3c931@gmail.com>
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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
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