Re: [Discuss-gnuradio] PDU to Tagged Stream with BIG PDUs

[Bastian Bloessl]

Hi,


> On 14 Mar 2016, at 16:56, Francisco Albani <address@hidden> wrote:
> 
> I wrote a custom message block that produces a PDU with complex samples. My 
> plan is to connect it to a PDU to Tagged Stream and then to a UHD Sink (with 
> len_tag_name = 'packet_len').
> 
> The goal is to transmit a burst for each packet. This packets are made of 
> approximately 14k samples and sometimes more.
> 
> I'm unable to do this because of this error:
> 
> thread[thread-per-block[1]: <block pdu_to_tagged_stream (2)>]: Buffer too 
> small for min_noutput_items
> 
> I tried rising the PDUtoTaggedStream block min/max output buffer size to its 
> maximum values with no success.
> 
> Attached is the minimum equivalent flowgraph that shows the same problem.
> 
> Is this a Scheduler hardcoded limitation?
> 
> Anybody knows a workaround?
> 

the Tag Debug and Null Sink seem to not have an interface for adjusting the 
buffers, but if I add it (manually) to the python file, it works for me

(self.blocks_pdu_to_tagged_stream_0).set_min_output_buffer(100000)
(self.blocks_null_sink_0).set_min_output_buffer(100000)
(self.blocks_tag_debug_0).set_min_output_buffer(100000)

Best,
Bastian