Samba 3.0 is starting to be used in a lot of places, and I'm starting to look into how we can best ensure we don't get bottlenecks in our performance.
Metze has raised a number of issues with pdb_ldap: - We do a Get_Pwnam() on every user - even in enums. - We hit the LDAP server for a new connection each time Both of these we have known about for a while - but it turns out that usrmgr asks for a list of all users (enum), then asks for each user by RID. In his (quite large) setup, this can take so long that usrmgr times out! For the first problem, I am proposing that we use the uidNumber gidNumber etc in the user's ldap record directly - rather than going a Get_Pwnam() for that information. Naturally, if that information is not present, we can do a Get_Pwnam anyway. However, the question is: Should we make this the default? It's fine for sites running nss_ldap, but it does change behavior. Or should we add 'yet another smb.conf option', that admins would have to turn on if they are running such large domains? I would propose 'ldap trust uids' as the name, unless somebody comes up with a better one :-). For the second issue, we will just have to start caching connections - it doesn't look too hard, just a wrapper around the actual calls, but I've not had a chance to implement it. Andrew Bartlett -- Andrew Bartlett [EMAIL PROTECTED] Manager, Authentication Subsystems, Samba Team [EMAIL PROTECTED] Student Network Administrator, Hawker College [EMAIL PROTECTED] http://samba.org http://build.samba.org http://hawkerc.net
