Netscape NETSCAPE DIRECTORY SERVER 6.1 - ADMINISTRATOR, Administrator'S Manual

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Managing Indexes
Chapter 10 Managing Indexes 377
• Find a value that is a bit high for your current needs but that will work well for
your future needs. For example, if your current directory contains 50,000
entries, try setting the All IDs Threshold to 20,000—that is 40 percent of 50,000
(which puts it within range of your current directory needs) and 2 percent of
1,000,000 (which puts it within range of your future directory needs).
The strategy you should choose depends on your directory deployment needs.
Consider the cost of rebuilding your databases (and all associated consumer
servers) versus potential affects on performance as your All IDs Threshold value
moves away from the ideal setting of 5 percent.
Also consider how quickly your directory will grow and how long it will take you
to increase your directory size. If your directory takes years to grow, then plan to
do a database rebuild. If in a few months your directory increases in size by an
order of magnitude or greater, consider ways to set the All IDs Threshold so as to
minimize the time between database rebuilds.
All IDs Threshold Tuning Advice for Service
Providers and Extranets
For hosting service providers, extranet directories, and directories with over 80,000
entries, tuning advice is available from Netscape Professional Services.
Default All IDs Threshold Value
By default, the Directory Server is set to an All IDs Threshold of 4000. This value is
suitable for a database of up to 80,000 entries. If you expect your databases to be
larger than 80,000 entries, we recommend that you change your all IDs Threshold
to a large value before populating your databases.
NOTE It may make sense for you to have a different All IDs Threshold on
a consumer server as it can be tuned to service different searches.