netmap overrun counters

[bazzoola]

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?

Thanks for your input.