Re: Bad proformance after add several ACLs setting.

[Aaron Richton <richton@nbcs.rutgers.edu>]

> There is a openldap installation on my gentoo server. The version of
> server is net-nds/openldap-2.1.30-r2.
gentoo has a build for 2.3.24. You'd be well advised to upgrade to it if 
you care at all about performance.

> [bunch of ACLs]
The odds that excessive ACLs are causing performance issues are very 
small compared to...

> Does the performance problems related by the ldbm backend?
the odds that that the ldbm backend, combined with a lack of a properly 
tuned BerkeleyDB DB_CONFIG file, are causing massive performance issues. 
OpenLDAP 2.3 is much more user-friendly, in that it even would syslog 
"warning, DB_CONFIG missing, poor performance expected" which might have 
saved you a lot of hassle.

In short:

1. Upgrade to 2.3.24.
2. Use database type "bdb" or "hdb". Probably "hdb" at this point.
3. Place a DB_CONFIG file in the bdb/hdb director{y,ies), or use dbconfig 
directives in your 2.3 slapd configuration, to perform appropriate tuning.

DB_CONFIG tuning information can be found in the FAQ-O-Matic and the list 
archives.