Improving Performance
 
 
 

You can improve performance in many areas by taking a few steps in advance. For example, creating indexes can greatly speed up queries and save back.

The following table lists some of the steps you can take to improve performance. For more information on an item, click the link.

Feature Layers  
Filtering Feature Layers You can filter a feature layer to reduce the number of features in the layer and improve performace. You can filter data as you bring it into your map (in Data Connect, click Add To Map With Query), or after you bring it in (right-click the layer and choose Query To Filter Data).
Query Attached Drawings  
To turn off a global coordinate system Using the AutoCAD Map 3D global coordinate systems requires many complex calculations and can decrease performance for operations such as querying objects from attached drawings and saving back objects.
To create a drawing index To reduce the amount of time it takes to perform a query, create an index. Instead of searching all locations, properties, object data, or database links to find matching data, AutoCAD Map 3D searches only the relevant index. If you created indexes in a previous release of AutoCAD Map 3D, it may help to recreate the indexes in this release to ensure that they include any new features, such as color book names.
Raster Images  
To hide an image When you hide an image, the image does not display onscreen, nor does it plot. Only the image boundary displays onscreen. Hiding images is a convenient way to speed regeneration time. You can easily redisplay the image when you are ready to plot.
To unload an image To conserve memory use and enhance performance, you can unload images that you do not currently need to view and/or plot.
To configure memory for images Because memory management can be an issue when working with large images, you can configure the Raster Extension for best performance. Specify the amount of memory reserved for the image swap file. The higher the Memory Limit, the less swapping to hard disk occurs and the faster your images load and display. For best performance, use a local drive for your temporary swap file.
To change the image display quality Display your images in high quality or draft quality. High quality dithers the pixels so that the areas between shading appear more gradual. Draft quality can speed up the performance of your system, but may reduce the quality of how some color and gray scale images appear onscreen.
Topology  
Buffering a Topology Improve the performance of buffering operations by increasing the RAM to more than the recommended amount, or by increasing the virtual memory on your system. This is recommended if you are buffering large topologies.
DataView  
To use a SQL filter in the Data View Filter, or limit, the data displayed in the Data View. Filters let you view only the records you want. This can improve performance in scrolling through many records or in highlighting records.
Other  
To erase short linear objects Using the Erase Short Objects cleanup action, you can locate any objects shorter than the specified tolerance and erase them. This action reduces the number of unnecessary linear objects and nodes in a map.
To simplify objects Simplifying linear objects reduces file size and improves performance but also reduces the resolution of the data.
To add objects to the save set and lock the objects When modifying or working with a large number of objects, you can enhance performance by adding the objects to the EditSet (locking them) prior to working with them.