suspicious hangs of ZMS / ZOPE

Dear all,


many be someone has ideas how i can solve this.

Since several years we run some ZMS instances within NetBSD in versions from 
Zope 2.8 - 2.10 / ZMS 2.11/12/13.

In versions higher then 2.12 i have some ZMS instances which are hanging 
sporadically - means ZOPE is "hanging" with no (or very low) CPU time (the 
whole ZOPE instance hangs).

Since i tried to fiddle with the "Gallery" from ZMSMediaplayer this could be 
reproduced much more often - i.e. if some one clicks very fast within the 
Gallery (which seems to load Images) or do some reloads of it. I first assumed 
that some image files did push the hangs but i'm not shure as the problem 
arises within opening different images.

Every time ZOPE process is hanging without any report into event.log or debug 
logs within ZOPE. Sometimes i can read "ZOPE unhandled connect event".

Some years ago i had the problem that ZOPE instances with ZMS was running out 
of memory - extending the allowed memory for the process solved that. But here 
this doesnt seem to help (given 1,5 GB and more without any luck). Anotehr one 
time unicode chars within templates or user input in text fields could not 
generated properly - leading to hangs...

Interesting seems that some of the beta users get very often crashes 
(especially with Safari) while others don't get any crash - even if they seems 
do do the same things.

My own ZOPE code seems not affected from this - but i mainly use/write DTML 
and Python-Scripts within ZOPE.

Any idea? If not - don't hit me pls...

Wanna play with?
http://jwd.syndicat.com/avmhlwork/content/historie/bildergalerie/index_ger.html

many thanks in advance...
best regards,


Niels.
-- 

---

  Niels Dettenbach
  ---
  Syndicat IT&Internet
  http://www.syndicat.com
  T.-Muentzer.-Str. 2, 37308 Heilbad Heiligenstadt - DE
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  PGP public key ID 651CA20D
  Fingerprint: 55E0 4DCD B04C 4A49 1586  88AE 54DC 4465 651C A20D
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