The default is 1000 entries.
.TP
.B checkpoint <kbyte> <min>
-Specify the frequency for checkpointing the database transaction log.
-A checkpoint operation flushes the database buffers to disk and writes
-a checkpoint record in the log.
-The checkpoint will occur if either <kbyte> data has been written or
-<min> minutes have passed since the last checkpoint.
-Both arguments default to zero, in which case they are ignored.
-See the Berkeley DB reference guide for more details.
+Specify the frequency for checkpointing the database transaction
+log upon updating of the database. A checkpoint flushes the
+database buffers to disk and writes a checkpoint record in the log.
+Upon a database update, a checkpoint will occur if either <kbyte>
+data has been written or <min> minutes have passed since the last
+checkpoint. Both arguments default to zero, in which case they are
+ignored. Note: checkpointing by this directive occurs only upon execution of
+a database update. If one desires checkpointing to occur otherwise,
+db_checkpoint(1) or some other external process should be used to cause
+a database checkpoint to be taken. See the Berkeley DB reference
+guide for more details.
.TP
.B dbnosync
Specify that on-disk database contents should not be immediately
If only an <attr> is given, the indices specified for \fBdefault\fR
are maintained.
Note that setting a default does not imply that all attributes will be
-indexed.
+indexed. Also, for best performance, an
+.B eq
+index should always be configured for the
+.B objectClass
+attribute.
A number of special index parameters may be specified.
The index type