[Mailman-Users] Follow up to a Lock problem.

[Llewellyn Curran]

Hi All,

I've summarized my issue below, and I would like to say I have around 215K
subscribers on a Dedicated Server With a Quad Xeon CPU and 4GB's Ram. Most
notably Mailman chews up around 2GB's+ of Ram but completely max's my CPU
usage in top on CentOS. Python runs about 98% to 100% - I suspect this is
from a mail drop going on however it doesn't explain below. Please read on.

Mailman Version: 2.1.9

Symptoms:
I had an issue a month or so ago where my web interface on "
http://mysite.com/mailman/admin/mylist" would lock up on login, and I
couldnt access that list. The other lists I could access no problems. I was
guided to  the FAQ at <http://wiki.list.org/x/noA9> by Mark S. and that
temporarily relieved the problem. I find now that I have to completely
delete my locks everytime I want to go to a new location in the admin
interface. I have included some errors from the locks log below. Can you
assist me?

Errors:
[root at x mailman]# tail -50 /var/log/mailman/locks
Oct 26 21:13:56 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/IncomingRunner.py", line 115, in _dispose
Oct 26 21:13:56 2010 (17763)
mlist.Lock(timeout=mm_cfg.LIST_LOCK_TIMEOUT)
Oct 26 21:13:56 2010 (17763)   File "/usr/lib/mailman/Mailman/MailList.py",
line 161, in Lock
Oct 26 21:13:56 2010 (17763)     self.__lock.lock(timeout)
Oct 26 21:13:56 2010 (17763)   File "/usr/lib/mailman/Mailman/LockFile.py",
line 287, in lock
Oct 26 21:13:56 2010 (17763)     self.__linkcount(), important=True)
Oct 26 21:13:56 2010 (17763)   File "/usr/lib/mailman/Mailman/LockFile.py",
line 416, in __writelog
Oct 26 21:13:56 2010 (17763)     traceback.print_stack(file=logf)
Oct 26 21:13:58 2010 (17763) xlt.lock unexpected linkcount: 1
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/bin/qrunner", line
278, in ?
Oct 26 21:13:58 2010 (17763)     main()
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/bin/qrunner", line
238, in main
Oct 26 21:13:58 2010 (17763)     qrunner.run()
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/Runner.py", line 71, in run
Oct 26 21:13:58 2010 (17763)     filecnt = self._oneloop()
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/Runner.py", line 112, in _oneloop
Oct 26 21:13:58 2010 (17763)     self._onefile(msg, msgdata)
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/Runner.py", line 170, in _onefile
Oct 26 21:13:58 2010 (17763)     keepqueued = self._dispose(mlist, msg,
msgdata)
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/VirginRunner.py", line 38, in _dispose
Oct 26 21:13:58 2010 (17763)     return IncomingRunner._dispose(self, mlist,
msg, msgdata)
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/IncomingRunner.py", line 115, in _dispose
Oct 26 21:13:58 2010 (17763)
mlist.Lock(timeout=mm_cfg.LIST_LOCK_TIMEOUT)
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/Mailman/MailList.py",
line 161, in Lock
Oct 26 21:13:58 2010 (17763)     self.__lock.lock(timeout)
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/Mailman/LockFile.py",
line 287, in lock
Oct 26 21:13:58 2010 (17763)     self.__linkcount(), important=True)
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/Mailman/LockFile.py",
line 416, in __writelog
Oct 26 21:13:58 2010 (17763)     traceback.print_stack(file=logf)
Oct 26 21:13:58 2010 (17763) xlt.lock unexpected linkcount: 1
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/bin/qrunner", line
278, in ?
Oct 26 21:13:58 2010 (17763)     main()
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/bin/qrunner", line
238, in main
Oct 26 21:13:58 2010 (17763)     qrunner.run()
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/Runner.py", line 71, in run
Oct 26 21:13:58 2010 (17763)     filecnt = self._oneloop()
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/Runner.py", line 112, in _oneloop
Oct 26 21:13:58 2010 (17763)     self._onefile(msg, msgdata)
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/Runner.py", line 170, in _onefile
Oct 26 21:13:58 2010 (17763)     keepqueued = self._dispose(mlist, msg,
msgdata)
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/VirginRunner.py", line 38, in _dispose
Oct 26 21:13:58 2010 (17763)     return IncomingRunner._dispose(self, mlist,
msg, msgdata)
Oct 26 21:13:58 2010 (17763)   File
"/usr/lib/mailman/Mailman/Queue/IncomingRunner.py", line 115, in _dispose
Oct 26 21:13:58 2010 (17763)
mlist.Lock(timeout=mm_cfg.LIST_LOCK_TIMEOUT)
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/Mailman/MailList.py",
line 161, in Lock
Oct 26 21:13:58 2010 (17763)     self.__lock.lock(timeout)
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/Mailman/LockFile.py",
line 287, in lock
Oct 26 21:13:58 2010 (17763)     self.__linkcount(), important=True)
Oct 26 21:13:58 2010 (17763)   File "/usr/lib/mailman/Mailman/LockFile.py",
line 416, in __writelog
Oct 26 21:13:58 2010 (17763)     traceback.print_stack(file=logf)
[root at x mailman]#

-- 
Llewellyn G.S. Curran