In the last month I have started to get these errors using Zope 2.7.7 in a ZEO configuration with one client and one storage server:

------
2005-09-12T23:46:07 ERROR(200) ZODB Couldn't load state for 0x055ba7
Traceback (most recent call last):
File "/usr/local/Zope/lib/python/ZODB/Connection.py", line 600, in setstate
    self._set_ghost_state(obj, p)
File "/usr/local/Zope/lib/python/ZODB/Connection.py", line 639, in _set_ghost_state
    state = unpickler.load()
MemoryError
------
2005-09-12T23:46:07 ERROR(200) SiteError Error while logging
Traceback (most recent call last):
File "/usr/local/Zope/lib/python/Products/SiteErrorLog/SiteErrorLog.py", line 142, in raising
    tb_text = ''.join(
MemoryError


Sometimes I see this too:

------
2005-09-06T15:23:30 ERROR(200) ZServer uncaptured python exception, closing channel <select-trigger (pipe) at bd9104c> (exceptions.MemoryError: [/usr/local/lib/python2.3/asyncore.py|read|69] [/usr/local/lib/python2.3/asyncore.py|handle_read_event|390] [/usr/local/Zope/lib/python/ZServer/medusa/thread/select_trigger.py|handle_read|77] [/usr/local/lib/python2.3/asyncore.py|recv|342] [/usr/local/lib/python2.3/asyncore.py|recv|523])

And this one also brings the show down:

------
2005-09-06T05:35:51 ERROR(200) zrpc:30832 can't decode message: "(M2'K\x00U\x06.reply(TW\x00\x01\x00((U\tOFS.Imageq\x01U..."
------
2005-09-06T05:35:51 ERROR(200) zrpc-conn(C):localhost:6100 Error caught in asyncore
Traceback (most recent call last):
  File "/usr/local/lib/python2.3/asyncore.py", line 69, in read
    obj.handle_read_event()
File "/usr/local/lib/python2.3/asyncore.py", line 390, in handle_read_event
    self.handle_read()
File "/usr/local/Zope/lib/python/ZEO/zrpc/smac.py", line 217, in handle_read
    self.message_input(msg)
File "/usr/local/Zope/lib/python/ZEO/zrpc/connection.py", line 339, in message_input
    msgid, flags, name, args = self.marshal.decode(message)
  File "/usr/local/Zope/lib/python/ZEO/zrpc/marshal.py", line 39, in decode
    return unpickler.load() # msgid, flags, name, args
MemoryError

It completely locks up the zope until I restart. I added more RAM to the box and also bumped up the zeo cache-size to 100MB and 10000 objects in the zope.conf. I also changed over from binding to an external ethernet interface and bound the zeo stuff to the localhost interface.

Any ideas on other things I could try?

Thanks,
Calvin

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