topic Class Function: Performance in QlikView https://community.qlik.com/t5/QlikView/Class-Function-Performance/m-p/171515#M41491 <HTML><HEAD></HEAD><BODY><P>Hallo,</P><P>I am currently converting a QV application from QV 8.5 to QV 9 SR5.</P><P>The QV app uses the class function - this works fine.</P><P>Now, after switching to QV9, I see a dramatic increase of memory usage compared to 8.5, although my testing app contains less data.<BR />(Besides less data, the testing app is 1:1 the orginal 8.5 app.)</P><P>I tracked this down to the class function, as I changed the dynamic creation of ranges with class (at run time) to a static definition of ranges calculated at load time. After that change the same view needs much less memory.</P><P>So my impression so far is, that the class function got worse from V8.5 to V9SR5.</P><P>Questions:<BR />Is this (class function behaves worse) a known phenomen when switching from V8.5 to V9?<BR />Any idea for a workaround (besides replacing by static ranges)?</P><P>Thank you,<BR />Thilo</P><P></P><P></P></BODY></HTML> Mon, 23 Aug 2010 18:14:30 GMT 2010-08-23T18:14:30Z Class Function: Performance https://community.qlik.com/t5/QlikView/Class-Function-Performance/m-p/171515#M41491 <HTML><HEAD></HEAD><BODY><P>Hallo,</P><P>I am currently converting a QV application from QV 8.5 to QV 9 SR5.</P><P>The QV app uses the class function - this works fine.</P><P>Now, after switching to QV9, I see a dramatic increase of memory usage compared to 8.5, although my testing app contains less data.<BR />(Besides less data, the testing app is 1:1 the orginal 8.5 app.)</P><P>I tracked this down to the class function, as I changed the dynamic creation of ranges with class (at run time) to a static definition of ranges calculated at load time. After that change the same view needs much less memory.</P><P>So my impression so far is, that the class function got worse from V8.5 to V9SR5.</P><P>Questions:<BR />Is this (class function behaves worse) a known phenomen when switching from V8.5 to V9?<BR />Any idea for a workaround (besides replacing by static ranges)?</P><P>Thank you,<BR />Thilo</P><P></P><P></P></BODY></HTML> Mon, 23 Aug 2010 18:14:30 GMT https://community.qlik.com/t5/QlikView/Class-Function-Performance/m-p/171515#M41491 2010-08-23T18:14:30Z