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Bulk addition normally performs the index rebuild operation after the final data file is closed. At that point, all data is flushed from memory caches and resides in persisted storage requiring the rebuild phase to re-read the data, leading to increased I/O time.
An optional rebuild capability is available enabling the rebuild process to take advantage of data already existing in cache. In the best-case scenario, your entire data file fits in available FairCom RTG memory caches significantly reducing total rebuild time.
To enable cached rebuild performance add <bulkaddition prmiidx> to your local FairCom RTG ctree.conf configuration file. This option does not require closing the file and therefore takes advantage of the cached data when reading the data records and building keys.
