Display lag – performance related

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  • #7163
    milovan
    Participant

    Hello,
    I am testing NoMachine Free version on Linux (Kubuntu 14.04) and Windows 7 stations connecting to physical displays (all have dual monitors) remotely (machines are in different countries). So far it works fine but there is a very noticeable lag when viewing someone’s screens. I made sure (via router’s logs) that we are using UDP.  Lag is especially present if on screen there is a lot of content (for example HTML page with a lot of text and colours) as well as on scroll.

    I tried all option combinations in Display settings and fined tuned them. Lag is less but still considerable.

    Question:Next I would like to evaluate performance improvement between VP8 and H264. VP8 works out of the box. H264 requires additional installation that I can handle.
    Before I go installing H264, can you tell me whether H264 codec will yield better performance (less lag) than VP8?

    #7184
    fra81
    Moderator

    Hello milovan,

    yes, you can expect less lag with the H.264 codec. From our tests, H.264 uses 20-30% less bandwidth and takes 20-30% less time to encode a frame. Both those aspects will impact the latency.

    You may also be interested in our upcoming feature about hardware H.264 encoding:https://www.nomachine.com/FR03M0290

    This implementation will help reducing the encoding time and the CPU usage considerably.

     

    #7186
    milovan
    Participant

    Thanks fra81, that sounds interesting. However, your link seems to be broken. I tried changing FR to AR (as most article links start with AR) but it doesn’t work. 🙁

    #7202
    Britgirl
    Keymaster

    Here is the correct link: https://www.nomachine.com/FR03M02904

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