Chapter 11. Improving import performance
Very large attribute sizes or a large number of entries can negatively impact server performance during import operations. This section describes how to tune Directory Server settings to improve the import performance.
11.1. Tuning directory server for large database imports and imports with large attribute values
Use the import cache autosizing feature for operations like:
- importing a very large database
- importing a database with large attributes, such as binary attributes that store certificate chains or images
Offline imports are faster than online ones. Consider using offline imports where possible.
You can configure the import cache autosizing feature with the nsslapd-import-cache-autosize attribute. By default, Directory Server enables the import cache autosizing for the ldif2db operation only, automatically allocating 50% of the free physical memory for the import cache.
For further details, see the description of the nsslapd-import-cache-autosize attribute in the Configuration, Command, and File Reference document.
