Re: how to config in-memory backend database?

[Howard Chu <hyc@symas.com>]

Robert Petkus wrote:
> You may want to take a look at back-hdb and set an appropriately large
> value for idlcachesize -- 3x what one wold normally use with back-bdb
> according to the man pages.
>   

I don't think the choice of slapd backend has anything to do with the 
original question.

slapd will not automatically read all entries into memory on startup. If 
you want that to happen, you should issue a subtree ldapsearch command 
(using the rootDN or some other identity with unlimited search 
privilege) on the database after slapd starts.

Of course the ldapsearch will just cause every entry to be read. You 
must set the entry cache size to a number >= the number of entries in 
the database if you want them all to stay cached in memory.
> Robert Petkus
>
> William.Zhang wrote:
>
>   
> > Dear :
> >
> > I am wondering if there is anyway to config the openldap (or berkeley
> > db) so that it can read all entries in memory when startup for
> > performance ??
> >
> > thanks in advance!
> >
> >
> > -----------------
> > Regards.
> >
> > ?????????????????????????????????????
> > ?b?j(????????????????????????????????????
> >
> >
> >     
>
>
>
>   


--
 -- Howard Chu
 Chief Architect, Symas Corp.  http://www.symas.com
 Director, Highland Sun        http://highlandsun.com/hyc
 OpenLDAP Core Team            http://www.openldap.org/project/