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Former Member
May 04, 2013 at 09:03 PM

Performance of PB Classic on Win 7 vs XP


We have a PowerBuilder Application written in PB 10.5 Classic. It is an MDI app based on the PFC and for some of the application windows with many tabs and datawindows we have noticed an large difference in windows instantiation time on Windows 7 (using Win 7 Basic) and that of Windows XP (in XP mode).

In some cases it is 4 or more seconds on Windows 7 vs 1-2 seconds on XP - (even on the same box and database on an XP VM)

From what we can tell so far, it is the datawindow instantiation which appears to be the issue - however we haven't done a detailed test.

We also notice that layering a datawindow on another datawindow can sometimes have a large overhead when attempting to click on a field - this never seen in XP?

Does anyone know if this a documented or known behavior and if there are easy ways to improve this?

Does this problem clear up in later version (12.5 or 15)?