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Thread: Yast2 over ssh (Xming) extremely sluggish

  1. #1

    Unhappy Yast2 over ssh (Xming) extremely sluggish

    Hello,

    We administer our server from Windows by ssh'ing into it and opening yast2, which opens through Xming. But since upgrading the server from 13.2 to 42.1, yast2 has become EXTREMELY slow and sluggish. For example, opening User and group management takes 50 seconds, and scrolling etc. takes several seconds (other modules are slow too). It started after the 42.1 update, and at some point after that, it became even slower.

    We have 310 users in LDAP but it is not LDAP that is slow (ldapsearch resolves instantly).
    Maybe it is the same problems as described here http://stackoverflow.com/questions/28782162/serious-performance-problems-with-qt5-and-x11
    and
    https://kjellkod.wordpress.com/2011/...sues-on-linux/

    ssh'ing with Compression only helps a tiny bit.
    Is there anything we can do, other than running Yast2 in text mode?

  2. #2
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    Default Re: Yast2 over ssh (Xming) extremely sluggish

    As always, have you updated your Server from the command line?
    Code:
    zypper update
    Have you tried opening a YAST module directly instead of opening YAST first?
    So, for instance "Install Software" is often an existing menu option to see if it opens quickly or not.

    You might also want to narrow down whether this is something specific to opening YAST, vs any other action.

    And, compare running YAST passing X over SSH vs running YAST in ncurses mode in the same ssh session... Is there a difference?
    And, possibly running YAST in an X over SSH console vs SSH without passing X.

    If the update doesn't fix your problems, the above other suggestions might narrow down if your problem is related to YAST in a graphical Desktop.

    TSU
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  3. #3

    Default Re: Yast2 over ssh (Xming) extremely sluggish

    Thank you for your reply.
    Our server is currently not completely up to date, and I am not authorized to do it. But this issue has persisted all throughout since the Leap upgrade, during which the server has been fully updated at times. (I think we update it monthly or so)

    Opening User and group management directly from console doesn't do any difference, it still took over 50 seconds before it asked for the LDAP password.

    Opening in ncurses is better, it took 20 seconds. Once opened, it runs fluidly. It's the same with ssh without -X.

    The server takes care of other stuff too, which is running fine, so it seems to be only when using X windows it gets slow.

  4. #4
    Join Date
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    Default Re: Yast2 over ssh (Xming) extremely sluggish

    You have to <know> that the machine has been fully updated.
    Talk to whoever you need to talk to, to get it done.

    And, to satisfy that it really was done be sure to tell them exactly what you need them to do, which is to run the following in a console with elevated permissions.
    Code:
    zypper update
    TSU
    Beginner Wiki Quickstart - https://en.opensuse.org/User:Tsu2/Quickstart_Wiki
    Solved a problem recently? Create a wiki page for future personal reference!
    Learn something new?
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    Post and Share!

  5. #5

    Unhappy Re: Yast2 over ssh (Xming) extremely sluggish

    Hello again,

    We have now updated everything. Opening User and group management now takes around 27 seconds, and using it is not as sluggish as before. This might as well be because of server restart though, it's still much worse than before 42...

  6. #6

    Default Re: Yast2 over ssh (Xming) extremely sluggish

    Also, during start of the User and group module, it hangs for exactly 10 seconds on "Read the default system settings", like it's timing out on something... any ideas??

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