Red Hat Bugzilla – Bug 646329
taking a long time to get a result of getent group when the group has a large number of users
Last modified: 2011-07-21 04:03:37 EDT
Description of problem: A customer has some very large groups, and it takes a long time for their membership to be transferred via ldap which excessively delays our applications. Their largest group takes almost three minutes to look up: rhel5 ~ # time getent group students students:*:1438:tester,[...] real 2m53.334s This group has about 23000 users in it. This can be fixed by a fix of http://bugzilla.padl.com/show_bug.cgi?id=293. This added the nss_getgrent_skipmembers option, allowing group members not to be returned via ldap. Actually, this customer confirmed the fix on their environment. Version-Release number of selected component (if applicable): nss_ldap-253-25 How reproducible: Always Steps to Reproduce: 1. configure the ldap server and ldap client 2. create a group with a large number of users. (In case of this customer, it's about 23000 users) 3. run getent Actual results: it takes a long time to get a result of getent group when the group has a large number of users. Expected results: getent group returns the result in a short time.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-1030.html