LoadRunner VuGen poor performance when opening or scrolling a script containing very long code lines

Document ID:KM00614802
Creation Date:21-Oct-2013
Modified Date:21-Oct-2013
- Micro Focus Products:
  loadrunner professional 11.50
  
  loadrunner professional 11.51
  
  loadrunner professional 11.52

Summary

A workaround is provided for scripts with long code lines (greater than 27000 characters) to improve script scrolling performance.

Error

When using LoadRunner VuGen 11.50, 11.51, 11.52 or 11.52 patch 1 (VuGen 11.5x) to open and scroll a script containing long code lines with more than 27000 characters, poor performance may be observed including scrolling taking more than a minute as well as high CPU usage by the vugen.exe process (~25%).

Cause

There is an issue with the Microsoft WPF framework which is used in the VuGen 11.5x editor.

Fix

Split the long code line into multiple shorter lines e.g. change:

char* longString = "LongLineOfCodeLongLineOfCode";

to:

char* longString = "LongLineOfCode"
“LongLineOf”
“Code”;