[USRP-users] Late packets discarded?

Josh Blum josh at ettus.com
Tue Sep 25 09:46:11 EDT 2012



On 09/25/2012 09:29 AM, Per Zetterberg wrote:
> Which policy is default?

I should have said that :-)

Its the next packet policy.

-josh

> 
> BR/
> Per
> ________________________________________
> From: usrp-users-bounces at lists.ettus.com [usrp-users-bounces at lists.ettus.com] on behalf of Josh Blum [josh at ettus.com]
> Sent: Tuesday, September 25, 2012 3:17 PM
> To: usrp-users at lists.ettus.com
> Subject: Re: [USRP-users] Late packets discarded?
> 
> On 09/24/2012 06:53 PM, Tim Pitman wrote:
>> When a USRP detects a late packet is the packet transmitted ASAP or
>> simply discarded?
>>
> 
> I believe that late packets will be dropped by default and then continue
> at the next packet. They follow the underflow policy:
> 
> """
> underflow_policy: how the TX DSP should recover from underflow. Possible
> options are "next_burst" or "next_packet". In the "next_burst" mode, the
> DSP drops incoming packets until a new burst is started. In the
> "next_packet" mode, the DSP starts transmitting again at the next packet.
> """
> 
> http://files.ettus.com/uhd_docs/doxygen/html/structuhd_1_1stream__args__t.html#a4463f2eec2cc7ee70f84baacbb26e1ef
> 
> -josh
> 
>> Thanks,
>> Tim
>>
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>>
> 
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