NetQoS Performance Center slowly loads views

Products

• CA Network Flow Analysis (NetQos / NFA)

Issue/Introduction

NetQoS Performance Center has experienced increasing slowness when loading pages with graphical views.

Environment

Windows Server 2008 R2

Cause

NPC uses a graphics folder to save temp files of graphics loaded by NPC.  These may be retained for a long time.  Many files may build up in the directory, especially if an auto-refresh is enabled with many graphical view.  This directory is located here:

<InstallDirectory>\portal\WebSite\Graphics

Windows Server doesn't perform well when the file count gets very high.

Resolution

If you have a very high file count in this folder, it is safe to delete these .PNG files from the folder.  After doing so, you should see a marked performance increase.

Additional Information

We have observed file counts as high as 1.2 million in this folder.  NPC views were taking as long as 45-60 seconds to load.