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Thread: Measuring latency introduced by Wowza

  1. #1
    Join Date
    Nov 2013
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    2

    Default Measuring latency introduced by Wowza

    What is a good way to isolate the latency introduced by Wowza? I am trying to get a better picture of latency introduced by various components. My input is RTP and output is RTMPE.

    Very new to wowza and any help is appreciated.

  2. #2
    Join Date
    Nov 2013
    Posts
    2

    Default

    Turning on DEBUG in log4j is very useful and I have a lot of data. However, I am seeing ~3 sec delay between request received and when first flush is called. Out of that roughly 1 sec is spent between "open" and startPlay and significant amount of time is taken up by handshake. Any clue why that is happening? Both wowza and RTMP server are in the same AZ.

    2013-11-05 19:14:04 UTC comment server DEBUG 200 - open - - - 820.377
    2013-11-05 19:14:04 UTC comment server INFO 200 - handshake0: 1537 - - - 820.378
    2013-11-05 19:14:04 UTC comment server DEBUG 200 - Handshake[1]: length:2056 - - - 820.455
    2013-11-05 19:14:04 UTC comment server DEBUG 200 - Handshake[2]: length:520 - - - 820.455

  3. #3
    Join Date
    Sep 2011
    Posts
    1,934

    Default

    Hi,
    You can edit the StreamType in the Application.xml for your live application to be "live-lowlatency" which will lower the latency but you will not be able to duration of the handshake.

    Jason

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