(Answer) (Category) OpenLDAP Faq-O-Matic : (Category) OpenLDAP Software FAQ : (Category) Configuration : (Category) SLAPD Configuration : (Category) Performance Tuning : (Answer) What system parameters factors in performance?
1) Memory
Scale your cache to use available memory... and increase system memory if you can.

2) Disk
Use fast subsystems. Put each database and logs on separate disks.

3) Filesystem
Tune your file system. Disable access and modification timestamps to files. Enable softupdates or async access.

On Solaris systems, it is critical important to enable "priority paging". See Sun's paper on priority paging.

Note that the priority paging algorithm should only be enabled for pre-Solaris 8 systems. "Solaris 8 separates file system data from other data so that the file cache will no longer compete with programs for physical memory." This algorithm is known as the cyclical page cache. Therefore it is unnecessary to turn priority paging on.
wes@umich.edu, Kurt@OpenLDAP.org

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