0 Replies Latest reply: Apr 21, 2017 5:09 AM by Kerk Ying Ng RSS

    QlikView Server Global Cache RAM Usage

    Kerk Ying Ng

      Hi all,

       

      In QMC there is a configuration setting to set the lower and upper working set for RAM usage by the Cache. By default it is 70% and 90% respectively.

       

      How do we interpret this setting, if there are many concurrent users will it actually take up 90% of the RAM usage? Each QVW will also need RAM for its in-memory data, which will take priority?

       

      Attached below are the reference notes from the Qlik reference manual:

       

      Working Set %

      This control sets the minimum and maximum of the physical amount of RAM

      that can be used by an application. This way it is possible to control if an

      application can be swapped out of physical memory or not. However, there are

      no guarantees that the operating system can serve the process with the amount

      of memory set here.

      Using too high settings will degrade the performance of other processes on the

      computer, this may however be desirable if the computer is dedicated for Qlik-

      View.

      Do not change these settings unless you are well acquainted with Windows

      Virtual Memory Manager! Read more about working sets in the Microsoft Windows

      documentation.

      The settings are:

      Low

      sets the minimum amount of memory, in percentage, to be allocated to the

      application/process.

      High

      sets the maximum amount of memory, in percentage, to be allocated to the

      application/process.

      Cache

      sets the amount of memory, in percentage, to be used as cache for the application/

      process.