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.
|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
|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
|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.
|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
|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.
|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.