Wyse ThinOS 9.0 – poor performance & screen responsiveness

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  • #53481
    Avatardavid.drum
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    Hi guys,

    I am experiencing a weird issue with the poor performance of Wyse 3040 & 5070 clients while interacting with any app on the screen, e.g. scrolling and browsing websites. The latency of the screen is very high and the impression is as if the Citrix VDA which the client connects to is 200ms+ away while it’s on the same LAN.

    I just installed ThinOS 9.0.4024 on my test 3040 client and I still get the same issue as in the previous releases. When I was testing ThinOS 9.0 bete I did not have this problem but then every official release does not work properly in my environment.

    Strangely, this happens only when using on-prem StoreFront servers as via Citrix Workspace “mycorp.cloud.com” (pointed to the same Citrix VDA servers) everything works fine.

    I suppose it’s something environmental which causes this issue, is there anything I can try to fix this?

     

    The same problem observed on both 3040 and 5070 clients.
    Windows Server 2012R2 & 2019 VDAs
    StoreFront 7.15 & 1909
    Tried with on-prem XenApp 7.15 farm as well as CVAD Service and Cloud Connectors

    Thanks for your help!

    #53504
    Avatardavid.drum
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    After further troubleshooting, it turned out that the issue was caused by the “EDX Adaptive Transport” Citrix policy which is ON by default.

    After disabling the above Citrix policy the client is usable, HOWEVER, its performance and responsiveness are still noticeably behind ThinOS 8.6.

    This is a huge disappointment as I’ve been waiting many months for the EDT support, hoping this would provide users with a better experience. Now, not only EDT is broken in my environment but the Citrix Workspace app implementation in ThinOS 9.0 seems to be poor as well.

    I cannot stress enough how ThinOS 9.x. let me down. Now, I am thinking of trialing IGEL clients or handing over managing thin clients to someone else as I cannot provide my user base with acceptable experience by using ThinOS 9.x.

    #53507
    ConfGenConfGen
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    Do you have the option of testing a PC with Ubuntu or Suse running and use the Linux CWA? Do you see the same performance issues?
    ThinOS is using the exact Citrix Linux CWA. There are no modifications done.

    CG

    #53528
    Avatardavid.drum
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    Hi Thomas,

    I have some test ThinLinux based 3040s so will test them as soon as I can.

    I don’t know why EDT is making my 3040s and 5070s so slow, no clue what may be causing this in my environment. Even when EDT is NOT enabled, 3040s are laggy to me so cannot really be used in production.

    I already tried a different Storefront server and different VDA versions. Also 5070s are slow in my network with 9.x and EDT enabled but not as bad as 3040s.

    In your opinion, how does performance and responsiveness of the latest ThinOS 9.x build compare to 8.x.? To me, it seems like 3040s with 9.x can only be used for dashboards as they are underpowered to run as workstations or as anything which involves direct interactions with users.

    Regards,

    #53601
    Avatarbrian1020
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    What is your Citrix graphics policy set to?  For actively changing regions or for the entire screen for H.264?  If your VM’s have no GPU, we’ve found “For Actively Changing Regions” works better that “For the entire screen”.

    https://docs.citrix.com/en-us/tech-zone/design/design-decisions/hdx-graphics.html

    #53624
    ConfGenConfGen
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    There is a known issue with using EDT along with a Linux CWA.
    This should be fixed in the next ThinOS9 release as this will include a new CWA.

    CG

    #53627
    Avatardavid.drum
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    Thanks for your input guys.

    I’ve played with different video codec policy settings but it does not make too much difference. I think I’ve seen in Wyse documentation that they recommend using “For the entire screen” option in ThinOS 9.

    I disabled EDT but then the responsiveness of Wyse 3040s under ThinOS 9 is still bad and laggy – what is your impression guys, is it only me who sees that ThinOS 9 is much heavier than ver. 8?

    I installed IGEL OS on a 3040 and it works perfectly. I am just one step now from migrating my whole estate to IGEL OS. Cannot replace my 800 3040s with Wyse 5070 to get ThinOS working correctly. It’s really sad how Dell manages Wyse division…

    #53681
    Avatarbrian1020
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    David

    I would agree with you.

    I’ve also started a POC with Igel and their stuff works very well. I have a UD3 device i’ve been testing and some UD Pocket USB thumb drives that work fine in the 3040 devices when you enable Boot from USB in the BIOS.  I will say, the 3040 with their Atom processors still aren’t that great for Igel either when it comes to using Zoom for VDI.  It offloads the audio and video fine and its “usable” but when on a Zoom call the quality of the audio and video is better for myself and participants, but the CPU utilization of the 3040 was around 85-99% utilization at various points in the call.

    The 3040 in WTOS 9.1 beta testing Zoom for VDI seemed to be about the same as Igel for 3040’s and CPU utilization so I don’t see that going away with the 3040’s. You also need to keep in mind, WTOS has no built in browser which is part of the security of the OS.  Igel and Dell Hybrid Client are essentially running Ubuntu 1804 LTS, I’ve got a 5070 DHC seed unit i’ve been testing and it works fairly well.  DHC 1.1 should allow for installing software packages like Zoom for VDI, JVDI, WebEx VDI and others and you won’t need to wait for Dell to package them (so my sales engineer says).  This will also allow us to install other packages like Stratusphere UX for performance monitoring, etc.

    While the grass may always seem greener on the other side, the journey with Dell has been frustrating, but they’re getting better and catching up.  Happy to exchange ideas and collaborate with you outside of here since we seem to be on a similar path. Feel free to email me at brian10202006@gmail.com

     

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