Product(s):	AECOsim Building Designer
	Version(s):	08.11.09.593 ; 10.00.00.154
	Environment:	N/A
	Area:	Settings/Attributes
	Subarea:	DGN Settings

Problem Description

Will having "Delete Unused Levels" selected in the Compress Options affect Drawing View performance?

Reason

Drawing View performance is very slow.

Steps to Resolve

It is recommended not to include the “Delete Unused Levels”, ‘Delete Building Dataset Elements” and “Delete Building Display Accelerators” during the compress.”
If you compress these options out, you are impacting performance because it will recreate these at the next opening of the model.

NOTE: In some cases if file sizes appear to be excessive, it is worth running a compress with these two options enabled to clear all the cached data allowing a clean cache to be recreated next time the file is opened.

Delete Building Dataset Elements – deletes the DV levels. This removes all the levels staged for DV resymbolization and annotation.. if this is compressed out, the application will re harvest the levels from the part and family. There are some additional optimization done under here that would not makes sense to the average user. (parasolid body representations)

Delete Building Display Accelerators –  delete the unification cache generated for a DV view, so it can open and update quickly. If deleted the unification has to be reprocessed and cached.

The file size does not equate to file performance when it comes to DV as we are now building in certain caches to accelerate the display of Drawing Views.

A few details on File Compress on Exit :

• File Compress on Exit will compact the files structured storage. It will not include any of the compress options.
• File compress on exit is as good as compressing a file with no compress options selected.
• Manually initiating File compress with or without compress options selected will also compact the files structured storage after it honors the compress options selected.

An increased file size when working with Dynamic Views does not necessarily mean reduced performance, instead it would be beneficial for faster performance as it includes the unification cache.

See Also

Compress Options in AECOSim Building Designer - Behaviour and Configuration