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This bug is created as a clone of upstream ticket:
https://fedorahosted.org/sssd/ticket/1535

The matching rule can actually be slower than not using it. It is also only used when ID mapping is not in use, because when ID-mapping we default to using tokenGroups.

We should change the default of ldap_initgroups_use_matching_rule_in_chain from true to false and update the manual page accordingly.

Verified with 1.9.2-59.

Verified in manpage sssd-ldap

And output of beaker automation run:
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [   LOG    ] :: idmap_015 bz861076 Flip the default value of ldap_initgroups_use_matching_rule_in_chain
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Stopping sssd: [  OK  ]
Starting sssd: [  OK  ]
[  OK  ]
:: [12:49:42] ::  Sleeping for 5 seconds
:: [   PASS   ] :: File '/var/log/sssd/sssd_ADTEST.log' should contain 'Option ldap_initgroups_use_matching_rule_in_chain is FALSE'

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0508.html