On Nov 10, 2010, at 8:41 AM, Atom Powers wrote:

> Are you using nss_ldap? Unless they have changed it recently, nss_ldap
> does group lookups very inefficiently. (Instead of searching for
> groups the user is a member of it searches for all groups and then
> looks for the member ID.) If you can, you may want to disable ldap
> lookups for group membership and/or use nscd.

The last time I rolled an OpenLDAP implementation, we ran into a lot of 
behavioral problems on the Linux clients using nss_ldap that were smoothed over 
by using nscd with reasonable cache timeouts (I think 5 minute cache expiry, 
with 1 minute for negative results.)  I strongly recommend using nscd if using 
pam_ldap/nss_ldap.

Gregory

-- 
Gregory K. Ruiz-Ade <[email protected]>
OpenPGP Key ID: EAF4844B  keyserver: pgpkeys.mit.edu



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