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"use websockets" functionally broken?

Discussion in 'Multiplayer' started by darthbator, Sep 7, 2016.

  1. darthbator

    darthbator

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    Is the websockets implementation in the HLAPI just functionally broken?

    Here's my server running an instance of my game with me and 7 of my friends actively playing for about 10 minutes over standard UDP



    Here's the very same server with 0 clients connected to a build that simply has use websockets checked.



    That seems just plain crazy! 99.7% CPU use when there's nothing happening? I'm assuming whatever is setup to listen on that TCP socket is a blocking process? Just for kicks I resized my instance to on with first 2 and then 4 VCPUs and it didn't seem to make a difference. Utilization just kicks all the way up and after 2 clients have connected lag becomes worse and worse until it's completely unusable. Has anyone gotten the NetworkManager implementation of websockets to work? I can't seem to be able to throw enough players at the standard UDP implementation but websockets seem to bring the server to it's knees without even having to do anything!
     
    Last edited: Sep 7, 2016
    darthbator, Sep 7, 2016
    #1

  2. y_atanasoff

    y_atanasoff

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    I'm having the same issue with Unity 5.4. You can even see it in the Editor performance.
     
    y_atanasoff, Sep 7, 2016
    #2

  3. darthbator

    darthbator

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    I came across this the other night while looking for a fix for this issue

    http://forum.unity3d.com/threads/unet-server-using-web-sockets-has-performance-issue.372676/

    The response from Unity QA is absolutely comical

    However down at the bottom of the post you'll see this!

    I have to admit I don't have the slightest idea what BES is but it appears someone has been able to get something functional out of it?
     
    darthbator, Sep 7, 2016
    #3

  4. gintautass

    gintautass

    QA Minion Unity Technologies

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    Ohh I was the one who handled that as well! Could have done a better job indeed!

    Either way, could one of you file a bug report with a project that reproduces this?(send me case id as well)
    I did a quick test with my pet project and it is nowhere near 100% CPU usage.
     
    Last edited: Sep 9, 2016
    gintautass, Sep 7, 2016
    #4

  5. y_atanasoff

    y_atanasoff

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    Here you go, sir:
    The best way to observe it is to set the Affinity of the process to a single CPU.
    I managed to reproduce it with 5.3.5f, 5.3.6 and 5.4.
    The same problem occurs when using the LLAPI as well.
    It's especially visible on Linux machines, where you would often use a headless instance as a server.
     
    y_atanasoff, Sep 8, 2016
    #5

  6. gintautass

    gintautass

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    The case has been forwarded to developers. :)
    Issuetracker link. The link should start working within an hour or so, as the page has not been generated yet.
     
    gintautass, Sep 9, 2016
    #6

  7. temo_koki

    temo_koki

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    Software that controls per-process CPU usage.
    here it is: http://mion.faireal.net/BES/
     
    temo_koki, Oct 10, 2016
    #7

  8. aabramychev

    aabramychev

    Unity Technologies

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    Could you please change ThreadAwakeTimeout to 5 and check results?
     
    aabramychev, Oct 11, 2016
    #8

  9. darthbator

    darthbator

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    I don't seem to be able to set

    UnityEngine.Networking.GlobalConfig.ThreadAwakeTimeout

    Is this the value that you're talking about? Should I be setting this in the editor somewhere and not by script?
     
    darthbator, Oct 11, 2016
    #9

  10. aabramychev

    aabramychev

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    check please, advanced configuration check box and you will be able to change GlobalConfig parameters
     
    aabramychev, Oct 11, 2016
    #10

  11. darthbator

    darthbator

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    So this value is to be set on the NetworkManager component?
     
    darthbator, Oct 11, 2016
    #11

  12. aabramychev

    aabramychev

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    Yes you can. or if you prefer to do this inside script you can call GlbalConfig cnf = NetworkManager.GlobalConf; cnf.ThreadAwakeTimeout = 5; //BEFORE call StartServer or SrartClient;
     
    aabramychev, Oct 11, 2016
    #12

  13. darthbator

    darthbator

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    I get the same behavior when deploying a build after setting that parameter. CPU use on my linux instance immediately pegs at 99% performance on clients is completely unplayable.
     
    darthbator, Oct 13, 2016
    #13

  14. aabramychev

    aabramychev

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    report a bug please with steps how it can be reproduced.
     
    aabramychev, Oct 13, 2016
    #14

  15. darthbator

    darthbator

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    The above bolded link is to a bug that covers the same issue I am having.
     
    darthbator, Oct 13, 2016
    #15

  16. aabramychev

    aabramychev

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    I saw this bug and moreover we tried to reproduce them, no success so far, i mean it is not 100% reproducible (afaik from talking with qa), but it is for editor and manager while @y_atanasoff reported that he obtained this problem with LLAPI only (and probably it is origin of this bug, so I want to hear how i can reproduce this).
     
    aabramychev, Oct 13, 2016
    #16

  17. temo_koki

    temo_koki

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    Nothing special, you just need to enable "Use WebSockets" checkbox in network manager component.
    For me this bug even exists in editor, In clean, just created project. Without "Use WebSockets" checked editor consumes 35% of CPU and with it - 60%. Changing ThreadAwakeTimeout doesn't change anything. Here is the screen record:



    Built exe file without websockets consumes 6% of CPU and with it - 30%
     
    Last edited: Oct 13, 2016
    temo_koki, Oct 13, 2016
    #17

  18. darthbator

    darthbator

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    I think it's extremely noticeable if you deploy the server build onto a single core EC2 instance (I have only tried linux but I assume windows would present the same issue). A standard UDP socket build consumes 6-10% CPU with 4-6 players. A websockets build consumes 99% CPU without any connected clients.
     
    darthbator, Oct 21, 2016
    #18