I would definitely be interested in testing the changes out.

I don't think I am running into that ticket exactly; I'm not in one group with that many users that I'm aware of. However, my own account is in over twenty groups, some of which are "all employees" and "all students", so it's a large result set. Ultimately it just means lots and lots of extra look-ups when I just want a list of GIDs/names.

Here is my config file. This is mostly from trial and error, Google and man, so it's probably not perfect (but it works):

# grep -vE '^(#|$)' sssd.conf [sssd] config_file_version = 2 domains = CUAD services = nss, pam [nss] debug_level = 0 filter_users = root filter_groups = root [domain/CUAD] auth_provider = krb5 enumerate = false id_provider = ldap krb5_realm = ... krb5_server = ... ldap_default_bind_dn = ... ldap_default_authtok_type = password ldap_default_authtok = ... ldap_disable_referrals = true ldap_group_object_class = group ldap_id_use_start_tls = true ldap_schema = rfc2307bis ldap_search_base = ... ldap_tls_reqcert = allow ldap_uri = ldaps://... ldap_user_fullname = displayName ldap_user_gecos = displayName ldap_user_home_directory = unixHomeDirectory ldap_user_name = cn ldap_user_object_class = user

Thanks, Josh

----- Original Message ----- From: "Jakub Hrozek" jhrozek@redhat.com To: sssd-users@lists.fedorahosted.org Sent: Thursday, May 23, 2013 4:44:13 AM Subject: Re: [SSSD-users] Caching/performance issues with 1.5 vs 1.9

On Thu, May 23, 2013 at 10:36:21AM +0200, Jakub Hrozek wrote:

On Wed, May 22, 2013 at 08:26:25PM +0000, Joshua C. Endries wrote:

...

Hello,

I'm trying to get sssd going here to hook up with AD/LDAP for user and group lookup. I have it working, and it works great on RHEL5 (sssd v1.5.1). Running 'id' on myself takes 3s when in foreground mode, and 0.014s in service mode (service start...). Unfortunately, on RHEL6 (sssd v1.9.2), Running 'id' on myself takes 3-4min in foreground and 1min in service mode. This is with the same sssd.conf file.

It looks like, when I look up my groups, it ends up looking up all the users in those groups, which 1.5 doesn't seem to do. We have a huge directory and caching all of this seems like a huge waste of resources... Is there a way to turn this off or modify this behavior? I tried reducing ldap_group_nesting_level but it didn't make a difference. Using ad instead of rfc2307bis didn't either. I didn't see anything else that looked like it would help...

Thanks, Josh

Hi Joshua,

it seems you are running into https://fedorahosted.org/sssd/ticket/1823

Before we have a more systematic fix we'll be adding a new option to disable the range retrieval altogether when that option is set. That should bring the same performance as you had with 1.5

I forgot to add -- we already have a patch ready. Would you be interested in testing it out? _______________________________________________ sssd-users mailing list sssd-users@lists.fedorahosted.org https://lists.fedorahosted.org/mailman/listinfo/sssd-users