On my Linux machine svnserve with threading and revprop caching causes authz_tests 7 to FAIL:
$ subversion/svnserve/svnserve --cache-revprops yes -Tdr subversion/tests/cmdline and $ ./authz_tests.py --url=svn://localhost 7 gives: 2012-04-19 09:56:31 [WARNING] CWD: /home/pm/sw/subversion/obj/subversion/tests/cmdline 2012-04-19 09:56:31 [WARNING] EXCEPTION: Failure: - {'foobar': 'foo bar', - 'svn:author': 'jrandom', ? ^ + {'svn:author': u'jrandom', ? ^ + 'svn:date': '', - 'svn:log': 'Log message for revision 1.'} + 'svn:log': u'Log message for revision 1.'} ? + Traceback (most recent call last): File "/home/pm/sw/subversion/src/subversion/tests/cmdline/svntest/main.py", line 1332, in run rc = self.pred.run(sandbox) File "/home/pm/sw/subversion/src/subversion/tests/cmdline/svntest/testcase.py", line 254, in run return self._delegate.run(sandbox) File "/home/pm/sw/subversion/src/subversion/tests/cmdline/svntest/testcase.py", line 176, in run return self.func(sandbox) File "../../../../src/subversion/tests/cmdline/authz_tests.py", line 602, in authz_log_and_tracing_test args=['--with-all-revprops', '-r1', sbox.repo_url]) File "/home/pm/sw/subversion/src/subversion/tests/cmdline/svntest/actions.py", line 713, in run_and_verify_log_xml entry.assert_revprops(expected_revprops[index]) File "/home/pm/sw/subversion/src/subversion/tests/cmdline/svntest/actions.py", line 588, in assert_revprops pprint.pformat(self.revprops).splitlines()))) Failure: - {'foobar': 'foo bar', - 'svn:author': 'jrandom', ? ^ + {'svn:author': u'jrandom', ? ^ + 'svn:date': '', - 'svn:log': 'Log message for revision 1.'} + 'svn:log': u'Log message for revision 1.'} ? + FAIL: authz_tests.py 7: test authz for log and tracing path changes -- uberSVN: Apache Subversion Made Easy http://www.uberSVN.com