Anyway to simulate performance of streaming pipeline under varying network condition?

[yiliang]

Hi,

I would like to see how a streaming pipeline behaves when the network bandwidth is varying. I can ask my cousin in another country to test the connection, but anyhow the number of scenarios is quite limited.

I am wondering if there is any facilities in gstreamer that help me do the testing and tune the parameters. It is even better if this process can be automated.

Thanks,
Yiliang

[Tristan Matthews-2]

I'm not sure about varying bandwidth, but for testing variable network
condition, you can use netem:
http://www.linuxfoundation.org/en/Net:Netem
We have some info about it on this wiki page:
http://svn.sat.qc.ca/trac/miville/wiki/NetEm

Here's an example script to simulate 5ms delay and 0.1ms of jitter:
http://svn.sat.qc.ca/trac/miville/browser/inhouse/prototypes/gstreamer/cpp/videotest/badnet
and a script to restore clean network conditions:
http://svn.sat.qc.ca/trac/miville/browser/inhouse/prototypes/gstreamer/cpp/videotest/cleannet
Just replace eth0 with the name of the interface you want to test.

You have to run them as root, i.e.:
sudo sh badnet
sudo sh cleannet

Hope this helps,
Tristan

2009/11/16 Yiliang Bao <[hidden email]>:

>
> Hi,
>
> I would like to see how a streaming pipeline behaves when the network
> bandwidth is varying. I can ask my cousin in another country to test the
> connection, but anyhow the number of scenarios is quite limited.
>
> I am wondering if there is any facilities in gstreamer that help me do the
> testing and tune the parameters. It is even better if this process can be
> automated.
>
> Thanks,
> Yiliang
>
> --
> View this message in context: http://old.nabble.com/Anyway-to-simulate-performance-of-streaming-pipeline-under-varying-network-condition--tp26382320p26382320.html
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
>
>
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--
Tristan Matthews
email: [hidden email]
web: http://tristanswork.blogspot.com

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