Hi, Zhang.
Did you try it with valsoft overlay ?
http://www.openldap.org/faq/data/cache/1282.html
and
man 5 slapo-valsort
Zhang Weiwu escreveu:
Dear list
As the project I am working on requires, all ldap search results should return latest-modified entry first. This requirement have many practical reason behind it and is an important requirement. I solve this problem by always invoke ldap search with 'sort' option.
I believe by doing so I have lowered down performance, especially the search result is often several thousands records. Now the server is overburden. I have noticed if I don't use sort feature, the result is always the reverse of the project requirement: last modified entries are displayed last. (project requirement is: last modified entries are displayed first.)
The project requirement will not likely to change in a few years time, so I think perhaps we can enhance performance by reconfiguring openldap to reverse sort order -> not possible on OpenLDAP itself but I guess probably by configuring BDB backend, to ask it to 'save' data in the opposite way, and by doing so make future search result automatically 'sorted'. So far, it's my dream and my wild guess. I am digging into BDB documents to find out if such configuration is possible and also write the list see if experts knows this possibility already.
And, I wouldn't be surprised if BDB cannot be configured the way I like, but, it's stupid not to ask the list just in case if it's possible
Thanks a lot in advance!