To estimate the size of your index before building it:
In the Administration Options menu, go to Projects > Your Project.
Click Build Index.
In the Build Index dialog, the Indexing Plan Estimation option is checked by default.
Leave it checked, and click OK. The window changes to the Status Monitor tab to show the progress of the estimation task.
Note: You may need to wait a moment for the page to refresh before seeing estimation begin.
When estimation is complete, review the data to ensure that you have sufficient resources to index and deploy the content. The estimation results include:
Number of CPUs required to serve the complete index
Estimated size of the entire index
Approximation of how long it will take to build the index
To continue and create the index, click Continue Indexing. To cancel the build, click Cancel Indexing, then OK to confirm.
Note: Depending on your content, estimation can take a significant length of time.
If you have reason to think that Search is underestimating the size of your index, you can manually adjust the sizing of your physical partitions.
For example, estimation says that your content requires three physical partitions, but you know that you are very close to needing four. To rule out any potential performance problems, you overrule the estimation and create four partitions instead. If this happens often, you may want to adjust the fullnessOfRecommendedPartitions setting in the /atg/search/routing/RoutingIndexService.properties file to some number less than one, as shown:
fullnessOfRecommendedPartitions=0.7
Going forward, Search will estimate your content based on 70% of the maximum physical partition size, making it less likely that your partition will fill up.
