Broken Pipe?

I just deployed the new version of my blog, and it runs fine
for the
first 15-30 minutes. After that, though, any page access
gives this
error:

==== Traceback ====
Traceback (most recent call last):
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/wsgiserver/__init__.py&quo
t;, line 624,
in communicate
    req.respond()
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/wsgiserver/__init__.py&quo
t;, line 357,
in respond
    response = self.wsgi_app(self.environ,
self.start_response)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cptree.py", line 74,
in __call__
    return self.wsgiapp(environ, start_response)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py", line
290, in __call__
    return head(environ, start_response)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py", line 42,
in __call__
    return IRResponse(self.nextapp, environ,
start_response,
self.recursive)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py", line 55,
in __init__
    self.setapp()
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py", line 60,
in setapp
    self.response = self.nextapp(self.environ,
self.start_response)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py", line
278, in tail
    return self.response_class(environ, start_response,
self.cpapp)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py", line
138, in __init__
    _cherrypy.log(tb)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/__init__.py", line
311, in __call__
    return log.error(*args, **kwargs)
  File
"/users/home/llimllib/lib/python2.4/site-packages/
CherryPy-3.0.1-py2.4.egg/cherrypy/_cplogging.py", line
40, in error
    self.error_log.log(severity, ' '.join((self.time(),
context,
msg)))
  File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1003, in
log
    apply(self._log, (level, msg, args), kwargs)
  File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1039, in
_log
    self.handle(record)
  File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1049, in
handle
    self.callHandlers(record)
  File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1082, in
callHandlers
    hdlr.handle(record)
  File
"/usr/local/lib/python2.4/logging/__init__.py",
line 617, in
handle
    self.emit(record)
  File
"/usr/local/lib/python2.4/logging/__init__.py",
line 717, in
emit
    self.handleError(record)
  File
"/usr/local/lib/python2.4/logging/__init__.py",
line 668, in
handleError
    traceback.print_exception(ei[0], ei[1], ei[2], None,
sys.stderr)
  File "/usr/local/lib/python2.4/traceback.py",
line 124, in
print_exception
    _print(file, 'Traceback (most recent call last):')
  File "/usr/local/lib/python2.4/traceback.py",
line 13, in _print
    file.write(str+terminator)
IOError: [Errno 32] Broken pipe

==== End Error ====

Anybody have any idea what could be causing this? Have any
way for me
to debug it further? Ideas how I could reproduce it (it only
happens
on my server, not my development machine)?

Thanks
Bill Mill
bill.mill at gmail.com


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I'd also just like to add that this response is sent to the
user, not
logged anywhere.

Thanks
Bill Mill
bill.mill at gmail.com


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Bill Mill wrote:
> I just deployed the new version of my blog, and it runs
fine for the
> first 15-30 minutes. After that, though, any page
access gives this
> error:
> 
> ==== Traceback ====
> Traceback (most recent call last):
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
>
CherryPy-3.0.1-py2.4.egg/cherrypy/wsgiserver/__init__.py&quo
t;, line 624,
> in communicate
>     req.respond()
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
>
CherryPy-3.0.1-py2.4.egg/cherrypy/wsgiserver/__init__.py&quo
t;, line 357,
> in respond
>     response = self.wsgi_app(self.environ,
self.start_response)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cptree.py",
line 74, in __call__
>     return self.wsgiapp(environ, start_response)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py",
line 290, in __call__
>     return head(environ, start_response)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py",
line 42, in __call__
>     return IRResponse(self.nextapp, environ,
start_response,
> self.recursive)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py",
line 55, in __init__
>     self.setapp()
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py",
line 60, in setapp
>     self.response = self.nextapp(self.environ,
self.start_response)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py",
line 278, in tail
>     return self.response_class(environ, start_response,
self.cpapp)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cpwsgi.py",
line 138, in __init__
>     _cherrypy.log(tb)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/__init__.py",
line 311, in __call__
>     return log.error(*args, **kwargs)
>   File
"/users/home/llimllib/lib/python2.4/site-packages/
> CherryPy-3.0.1-py2.4.egg/cherrypy/_cplogging.py",
line 40, in error
>     self.error_log.log(severity, ' '.join((self.time(),
context,
> msg)))
>   File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1003, in
> log
>     apply(self._log, (level, msg, args), kwargs)
>   File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1039, in
> _log
>     self.handle(record)
>   File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1049, in
> handle
>     self.callHandlers(record)
>   File
"/usr/local/lib/python2.4/logging/__init__.py",
line 1082, in
> callHandlers
>     hdlr.handle(record)
>   File
"/usr/local/lib/python2.4/logging/__init__.py",
line 617, in
> handle
>     self.emit(record)
>   File
"/usr/local/lib/python2.4/logging/__init__.py",
line 717, in
> emit
>     self.handleError(record)
>   File
"/usr/local/lib/python2.4/logging/__init__.py",
line 668, in
> handleError
>     traceback.print_exception(ei[0], ei[1], ei[2],
None, sys.stderr)
>   File
"/usr/local/lib/python2.4/traceback.py", line 124,
in
> print_exception
>     _print(file, 'Traceback (most recent call last):')
>   File
"/usr/local/lib/python2.4/traceback.py", line 13,
in _print
>     file.write(str+terminator)
> IOError: [Errno 32] Broken pipe
> 
> ==== End Error ====
> 
> Anybody have any idea what could be causing this? Have
any way for me
> to debug it further? Ideas how I could reproduce it (it
only happens
> on my server, not my development machine)?
> 

I must admit it seems hard to debug at first sight
especially
considering I think this is the first report I see with that
problem.

I know it could be a bit of a hassle but have you tried with
a very
simple CherryPy application to see if you were having the
same problem?
Does it do that only on your server? Local machine? Which
version did
you upgrade from?

- Sylvain

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> > Anybody have any idea what could be causing this?
Have any way for me
> > to debug it further? Ideas how I could reproduce
it (it only happens
> > on my server, not my development machine)?
>
> I must admit it seems hard to debug at first sight
especially
> considering I think this is the first report I see with
that problem.
>
> I know it could be a bit of a hassle but have you tried
with a very
> simple CherryPy application to see if you were having
the same problem?
> Does it do that only on your server? Local machine?
Which version did
> you upgrade from?
>
> - Sylvain

Sylvain,

Unfortunately, this is occurring on a shared server, on my
live
website, where I don't have a spare port I can use to run a
test
application.

I'm upgrading from cherrypy 2.2.1 to 3.0.1, proxied directly
from
Apache to cp's webserver. My host runs FreeBSD 5.4. This
problem has
yet to occur on my local host (MacBook Pro). I am running
this on a
userspace installation of python, v2.4.1.

(I'm in the process of upgrading to 2.4.3 - could that have
anything
to do with it?)

Thanks
Bill Mill
bill.mill at gmail.com


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