Re: [Discuss-gnuradio] PDU_to_tagged_stream consumes 100% CPU even though it is throttled!

[Ludwig Stephan (CR/AEH4)]

Hi List,

from my understanding of the code, this caveat still exists. And I have the 
same problem with this block as Achilleas.

Johnathan: As you wrote in the cited post that you would be working on that 
after 3.7.0, could you please give an update on the state of work?
How can we support?

Mit freundlichen Grüßen / Best regards

 Stephan Ludwig

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-----Ursprüngliche Nachricht-----
Von: address@hidden [mailto:address@hidden Im Auftrag von Bastian Bloessl
Gesendet: Donnerstag, 15. Januar 2015 07:15
An: address@hidden; address@hidden
Betreff: Re: [Discuss-gnuradio] PDU_to_tagged_stream consumes 100% CPU even 
though it is throttled!

Hi,

On 01/14/2015 11:29 PM, Achilleas Anastasopoulos wrote:
> I have the following problem that is been bugging me for quite some time
> now,
> and I would like to solicit your help.
>
> I made a hier block in GRC (called "test_pdu_to_tag") with:
>
> pad_source--->pdu_to_tagged_stream-->pad_sink
>
> (I also made the pad_source "optional" and the pad_sink "required")
>
> After compiling this block, I test it using the following GRC test
>
> test_pdu_to_tag-->throttle (at 100Hz!)-->null_sink
>
> (observe that the "test_pdu_to_tag" does not have an input)
>
> ==============
> When I run this I get that the CPU load goes to 100%.
>
> can anyone help me figure out why this is happening?
> This is all with the latest master on a Fedora 19.


AFAIK, pdu_to_tagged_stream is busy-waiting for new PDUs (at least in 
June 2013 it was) and always uses 100% CPU.

http://lists.gnu.org/archive/html/discuss-gnuradio/2013-06/msg00552.html

Best,
Bastian


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