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Jim Gallacher
jg.lists at sympatico.ca
Wed Jun 1 12:42:19 EDT 2005
Asif, I'm probably way out of my depth here, but could ldap be competing for the mutexes as they are a limited system resource (on linux anyway)? If ldap is a loadable module, what happens if you disable it in the apache config? Jim Asif Jan wrote: > Hi Jim > > Here is the information; > > [Wed Jun 01 18:12:39 2005] [notice] mod_python: Creating 32 session > mutexes based on 150 max processes and 0 max threads. > [Wed Jun 01 18:12:40 2005] [notice] LDAP: Built with OpenLDAP LDAP SDK > [Wed Jun 01 18:12:40 2005] [notice] LDAP: SSL support unavailable > [Wed Jun 01 18:12:40 2005] [notice] Digest: generating secret for > digest authentication ... > [Wed Jun 01 18:12:40 2005] [notice] Digest: done > [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global mutex > /var/tmp/tmp.0.UjOapM in child 5476 > [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global mutex > /var/tmp/tmp.0.UjOapM in child 5477 > [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global mutex > /var/tmp/tmp.0.UjOapM in child 5478 > [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global mutex > /var/tmp/tmp.0.UjOapM in child 5479 > [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global mutex > /var/tmp/tmp.0.UjOapM in child 5480 > [Wed Jun 01 18:12:40 2005] [notice] Apache/2.0.52 (Unix) > mod_python/3.1.4 Python/2.3 DAV/2 configured -- resuming normal operations > [Wed Jun 01 18:12:40 2005] [info] Server built: Sep 30 2004 18:20:43 > [Wed Jun 01 18:12:40 2005] [debug] prefork.c(955): AcceptMutex: sysvsem > (default: sysvsem) > > > > > Wed Jun 01 18:13:44 2005] [notice] mod_python: (Re)importing module > 'mptest' > [Wed Jun 01 18:13:44 2005] [warn] (13)Permission denied: Failed to > acquire global mutex lock at index 0 > [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler > mptest: Traceback (most recent call last):, referer: > http://localhost/MODPYTHON/ > [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler > mptest: File > "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ > python2.3/site-packages/mod_python/apache.py", line 299, in > HandlerDispatch\n result = object(req), referer: > http://localhost/MODPYTHON/ > [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler > mptest: File "/Library/Apache2/htdocs/MODPYTHON/mptest.py", line 5, > in handler\n _apache._global_lock(req.server, None, 0), referer: > http://localhost/MODPYTHON/ > [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler > mptest: ValueError: Failed to acquire global mutex lock, referer: > http://localhost/MODPYTHON/ > > > > Regards > Asif > > On Jun 1, 2005, at 5:39 PM, Jim Gallacher wrote: > >> Hi Asif, >> >> Is there any indication in the apache error.log that the mutexes >> where created on apache startup? You should see something like: >> >> [Wed Jun 01 15:38:39 2005] [notice] mod_python: Creating 32 session >> mutexes based on 6 max processes and 25 max threads. >> [Wed Jun 01 15:38:39 2005] [notice] Apache/2.0.54 (Debian GNU/Linux) >> mod_python/3.2.0-dev-20050519 Python/2.3.5 configured -- resuming >> normal operations >> >> Jim >> >> >> Asif Jan wrote: >> >>> Hi Jim, >>> Here is the output from the log file ( I saved the code in mptest >>> file) >>> [Wed Jun 01 17:23:15 2005] [notice] mod_python: (Re)importing >>> module 'mptest' >>> [Wed Jun 01 17:23:15 2005] [warn] (13)Permission denied: Failed to >>> acquire global mutex lock at index 0 >>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: Traceback (most recent call last):, referer: >>> http://localhost/MODPYTHON/ >>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: File >>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>> python2.3/site-packages/mod_python/apache.py", line 299, in >>> HandlerDispatch\n result = object(req), referer: >>> http://localhost/MODPYTHON/ >>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: File "/Library/Apache2/htdocs/MODPYTHON/mptest.py", line >>> 5, in handler\n _apache._global_lock(req.server, None, 0), >>> referer: http://localhost/MODPYTHON/ >>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: ValueError: Failed to acquire global mutex lock, referer: >>> http://localhost/MODPYTHON/ >>> Regards >>> Asif >>> On Jun 1, 2005, at 5:02 PM, Jim Gallacher wrote: >>> >>>> Try restarting apache and run the following test handler: >>>> >>>> import _apache >>>> >>>> def handler(req): >>>> req.content_type = 'text/plain' >>>> req.write('begin lock test\n') >>>> _apache._global_lock(req.server, None, 0) >>>> _apache._global_unlock(req.server, None, 0) >>>> req.write('begin lock test\n') >>>> return apache.OK >>>> >>>> Check the apache error.log and post any errors (including apache >>>> startup) regarding mutexes or locks. >>>> >>>> Regards, >>>> Jim >>>> >>>> >>>> Asif Jan wrote: >>>> >>>>> By the way I get same error when using the python scripts as well >>>>> Mod_python error: "PythonHandler mod_python.publisher" >>>>> Traceback (most recent call last): >>>>> File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/apache.py", line 299, in >>>>> HandlerDispatch >>>>> result = object(req) >>>>> File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/publisher.py", line 136, in >>>>> handler >>>>> result = util.apply_fs_data(object, req.form, req=req) >>>>> File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/util.py", line 361, in >>>>> apply_fs_data >>>>> return object(**args) >>>>> File "/Library/Apache2/htdocs/NEOBASE/mptest.py", line 5, in test >>>>> sess = Session.Session(req) >>>>> File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/Session.py", line 389, in Session >>>>> timeout=timeout, lock=lock) >>>>> File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/Session.py", line 294, in __init__ >>>>> timeout=timeout, lock=lock) >>>>> File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/Session.py", line 131, in __init__ >>>>> self.lock() # lock new sid >>>>> File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/Session.py", line 215, in lock >>>>> _apache._global_lock(self._req.server, self._sid) >>>>> ValueError: Failed to acquire global mutex lock >>>>> On Jun 1, 2005, at 3:17 PM, Asif Jan wrote: >>>>> >>>>>> >>>>>> Hi , >>>>>> >>>>>> When I try to use "session" object inside a PSP page I get >>>>>> following error ( I am using Mac OS X 10.3.9 , Python 2.3 >>>>>> (Apple), and mod_python 3.1.4). >>>>>> >>>>>> Is it something specific to Mac OS X ? >>>>>> >>>>>> By the way in my psp page I am doing a very simple thing i.e. >>>>>> >>>>>> if not session.is_new(): >>>>>> # do something >>>>>> else: >>>>>> # do something else >>>>>> >>>>>> >>>>>> Mod_python error: "PythonHandler mod_python.psp" >>>>>> >>>>>> Traceback (most recent call last): >>>>>> >>>>>> File >>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>> python2.3/site-packages/mod_python/apache.py", line 299, in >>>>>> HandlerDispatch >>>>>> result = object(req) >>>>>> >>>>>> File >>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>> python2.3/site-packages/mod_python/psp.py", line 297, in handler >>>>>> p.run() >>>>>> >>>>>> File >>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>> python2.3/site-packages/mod_python/psp.py", line 191, in run >>>>>> session = Session.Session(req) >>>>>> >>>>>> File >>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>> python2.3/site-packages/mod_python/Session.py", line 389, in Session >>>>>> timeout=timeout, lock=lock) >>>>>> >>>>>> File >>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>> python2.3/site-packages/mod_python/Session.py", line 294, in >>>>>> __init__ >>>>>> timeout=timeout, lock=lock) >>>>>> >>>>>> File >>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>> python2.3/site-packages/mod_python/Session.py", line 131, in >>>>>> __init__ >>>>>> self.lock() # lock new sid >>>>>> >>>>>> File >>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>> python2.3/site-packages/mod_python/Session.py", line 215, in lock >>>>>> _apache._global_lock(self._req.server, self._sid) >>>>>> >>>>>> ValueError: Failed to acquire global mutex lock >>>>>> >>>>>> _______________________________________________ >>>>>> Mod_python mailing list >>>>>> Mod_python at modpython.org >>>>>> http://mailman.modpython.org/mailman/listinfo/mod_python >>>>>> >>>>>> >>>>> Asif Jan >>>>> Research Assistant >>>>> Brain Mind Institute >>>>> Ecole Polytechnique Federale De Lausanne (EPFL) >>>>> Lausanne Switzerland >>>>> Tel +41216939529 >>>>> _______________________________________________ >>>>> Mod_python mailing list >>>>> Mod_python at modpython.org >>>>> http://mailman.modpython.org/mailman/listinfo/mod_python >>>> >>>> >>>> >>>> >>> Asif Jan >>> Research Assistant >>> Brain Mind Institute >>> Ecole Polytechnique Federale De Lausanne (EPFL) >>> Lausanne Switzerland >>> Tel +41216939529 >>> _______________________________________________ >>> Mod_python mailing list >>> Mod_python at modpython.org >>> http://mailman.modpython.org/mailman/listinfo/mod_python >> >> >> > Asif Jan > Research Assistant > Brain Mind Institute > Ecole Polytechnique Federale De Lausanne (EPFL) > Lausanne Switzerland > > Tel +41216939529 > > _______________________________________________ > Mod_python mailing list > Mod_python at modpython.org > http://mailman.modpython.org/mailman/listinfo/mod_python >
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