1 Reply Latest reply on Jul 20, 2016 1:48 PM by John Kuo

    Sometime graphs disappears in chrome

    Kunal Suresh Prajapati

      Hi Everyone,

       

      I am not sure if anyone has faced this issue..
      But currently some of our tableau dashboard users have informed that graphs gets disappeared when they return to dashboard open in chrome after leaving it untouched for 10-15 mins.


      Let me know if there is any specific reason and can be resolved.

       

       

       

      Thank You,

      Kunal P

        • 1. Re: Sometime graphs disappears in chrome
          John Kuo

          How much RAM do you have on the box hosting VizQL processes?

           

          From General Performance Guidelines :

          Consider changing two session memory settings:

          • VizQL session timeout limit: The default VizQL session timeout limit is 30 minutes. Even if a VizQL session is idle, it is still consuming memory and CPU cycles. If you can make do with a lower limit, use tabadmin to change the vizqlserver.session.expiry.timeout setting .
          • VizQL clear session: By default, VizQL sessions are kept in memory even when a user navigates away from a view. This consumes a good deal of session memory. Instead, you can end sessions when users move away from a view by changing the value of thevizqlserver.clear_session_on_unload setting to true (default is false).

           

          Tweaking settings below may help:

          vizqlserver.clear_session_on_unloadfalseDetermines whether or not VizQL sessions are kept in memory when a user navigates away from a view or closes their browser. The default value (false) keeps sessions in memory. To close VizQL sessions on leaving a view or closing a browser, set this to true. See General Performance Guidelines for more information.
          vizqlserver.session.expiry.minimum5Number of minutes of idle time after which a VizQL session is eligible to be discarded if the VizQL process starts to run out of memory.
          vizqlserver.session.expiry.timeout30Number of minutes of idle time after which a VizQL session is discarded.

           

          John