slapo-sssvlv - Server Side Sorting and Virtual List View overlay to slapd
This overlay implements the LDAP Server Side Sorting (RFC2891) control as well
as the Virtual List View control. It also replaces the default implementation
of the LDAP PagedResults (RFC2696) control, to ensure that it works with
Sorting. The overlay can be used with any backend or globally for all
Since a complete result set must be generated in memory before sorting can be
performed, processing sort requests can have a large impact on the server's
memory use. As such, any connection is limited to having only a limited number
of sort requests active at a time. Additional limits may be configured as
options apply to the SSSVLV overlay. They should appear
after the overlay
- sssvlv-max <num>
- Set the maximum number of concurrent sort requests allowed
across all connections. The default is one half of the number of server
- sssvlv-maxkeys <num>
- Set the maximum number of keys allowed in a sort request.
The default is 5.
- sssvlv-maxperconn <num>
- Set the maximum number of concurrent paged search requests
per connection. The default is 5. The number of concurrent requests
remains limited by sssvlv-max.
- default slapd configuration file
- default slapd configuration directory
"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
IETF LDAP Virtual List View proposal by D. Boreham, J. Sermersheim, and A. Kashi
in IETF document "draft-ietf-ldapext-ldapv3-vlv-09.txt".