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Sun Directory Server Enterprise Edition 7.0 Deployment Planning Guide

Populating the Suffix With 100,000 Sample Directory Entries

As you move to 100,000 entries, you have more directory data to fit into database and entry caches. Initially, import 100,000 entries and examine the size required on disk for this volume of directory data.


$ dsadm import -i /local/dsInst /var/tmp/100k.ldif dc=example,dc=com
…
$ du -hs /local/dsInst
 196M   /local/dsInst

Directory data contained in the database for our example suffix, dc=example,dc=com, now occupy about 142 megabytes.


$ du -hs /local/dsInst/db/example/
 142M   /local/dsInst/db/example

You can increase the size of the database cache to hold this content. If you expect the volume of directory data to grow over time, you can set the database cache larger than currently necessary. You can also set the entry cache size larger than necessary. Entry cache grows as the server responds to client requests, unlike the database cache, which is allocated at startup.


$ dsconf set-server-prop db-cache-size:200M
$ dsconf set-suffix-prop dc=example,dc=com entry-cache-size:2G

$ dsadm stop /local/dsInst
 Server stopped
$ dsadm start /local/dsInst
 Server started: pid=8640
$ pmap -x 8640
…
         Address     Kbytes        RSS       Anon     Locked Mode   Mapped File
…
0000000000437000      61348      55404      55148          - rw---    [ heap ]
…
---------------- ---------- ---------- ---------- ----------
        total Kb     491984     485736     174620          -

This shows the server instance has a relatively small heap at startup, but that the database cache memory has been allocated. Process size is nearing half a gigabyte.


$ ldapsearch -D cn=Directory\ Manager -w - -p 1389 -b dc=example,dc=com \
 objectclass=\* > /dev/null
Enter bind password:
$ pmap -x 8640
…
         Address     Kbytes        RSS       Anon     Locked Mode   Mapped File
…
0000000000437000     610212     604064     603840          - rw---    [ heap ]
…
---------------- ---------- ---------- ---------- ----------
        total Kb    1040880    1034428     723360          -

Heap size now reflects the entry cache being filled. It has increased by roughly 550 megabytes for 100,000 small directory entries, whose LDIF occupied 57 megabytes on disk.

With five extra indexes, the process size is about the same. The database cache size has not changed.


$ dsconf create-index dc=example,dc=com employeeNumber street st \
 postalCode description
$ dsadm stop /local/dsInst
 Server stopped
$ dsadm import -i /local/dsInst /var/tmp/100k.ldif dc=example,dc=com
…
$ dsadm start /local/dsInst
 Server started: pid=8762
$ ldapsearch -D cn=Directory\ Manager -w - -p 1389 -b dc=example,dc=com \
 objectclass=\* > /dev/null
Enter bind password:
$ pmap -x 8762
…
         Address     Kbytes        RSS       Anon     Locked Mode   Mapped File
…
0000000000437000     610212     603832     603612          - rw---    [ heap ]
…
---------------- ---------- ---------- ---------- ----------
        total Kb    1040876    1034192     723128          -

The database is somewhat larger, however. The additional indexes increased the size of the database from 142 megabytes to 163 megabytes.


$ du -hs /local/dsInst/db/example/
 163M   /local/dsInst/db/example