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Re: Performance issue in gnuradio version 3.10.1


From: Aditya Arun Kumar
Subject: Re: Performance issue in gnuradio version 3.10.1
Date: Thu, 19 Jan 2023 09:10:50 +0530

Also it feels like the fg is for 3.8 maybe remove the blocks and try re adding them?

On Thu, 19 Jan 2023 at 08:16, Aditya Arun Kumar <adityaarunkumarphi@gmail.com> wrote:


On Thu, 19 Jan 2023 at 07:15, SHAKTHIVEL S 2021 Batch,PES University <pes1ug20ec268@pesu.pes.edu> wrote:
Yes it works for me too. But the symbols are not getting decoded on the receiver side. Just try disabling all debug and sinks on transmitter side and enable message debug and put constellation sink on receiver side alone. The BEST symbols are overlapping on one another on receiver side and not getting decoded into messages. 
I suspect this is due to the slow transmission and noise from nowhere from one port to the other. 
Where you able to see a smooth refresh rate in the fft sink? 
So you have any logs or any debugger you’ve added to your fg or source in anyway to verify if it is not decoding properly (with time stamps preferably). Also I think you’re not using a sdr hardware as well, correct?
My deadline is also nearing. :(

On Thu, Jan 19, 2023, 06:59 Jeff Long <willcode4@gmail.com> wrote:
The pkt_xmt/pkt_rcv example on that page works for me, with very low CPU utilization. I did have to delete and re-add the PDU/Tagged Stream blocks that have moved, but I'm sure you've already figured that one out. Could you explain the performance and lagging issue you are talking about (and in less dramatic, engineering terms)?

On Wed, Jan 18, 2023 at 6:53 PM SHAKTHIVEL S 2021 Batch,PES University <pes1ug20ec268@pesu.pes.edu> wrote:
It is an adaptive site I changed the blocks accordingly to 3.10 . I am simulating this on my PC. It is lagging like a hell. Can anyone give some tips to increase speed? Or I have to bear with this? The symbols are not getting decided other side due to this

On Thu, Jan 19, 2023, 00:44 Aditya Arun Kumar <adityaarunkumarphi@gmail.com> wrote:
In 3.10 blocks got moved around right? To symbol sync and linear eq stuff?

On Thu, Jan 19, 2023, 00:04 Marcus Müller <mmueller@gnuradio.org> wrote:
Bit confused; you're using GNU Radio 3.10, but you specifically read a version of the
tutorial that is marked as *not* applying to 3.10?

On 18.01.23 17:13, SHAKTHIVEL S 2021 Batch,PES University wrote:
> I tried running the Packet Commication example given in gnuradio documentation using gr38
> embedded block. It throwed me this error
> "pagesize :error: no info; setting pagesize = 4096"
> Although this is not an error strictly it reduced the performance of the flowgraph
> drastically and I couldn't decode the message on the receiver side.The constellation are
> overlapping and trying to move away slowly. Any help would be appreciated
> Link to the site:https://wiki.gnuradio.org/index.php/Packet_Communications?ver1=3.8
> <https://wiki.gnuradio.org/index.php/Packet_Communications?ver1=3.8>
>
>
>

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S. Aditya Arun Kumar
+919123517465
--
S. Aditya Arun Kumar
+919123517465

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