On 8 December 2010 21:11, Graham Dumpleton <[email protected]> wrote:
> One thing you can do to try and work out what the process is doing
> before you kill it off, is to attach gdb to it and get a stack trace
> of all active threads. If the issue is in a C extension module, that
> may show what module and where. See:
>
> http://code.google.com/p/modwsgi/wiki/DebuggingTechniques#Debugging_Crashes_With_GDB
>
> Another thing that can be done is try to force a stack trace of where
> in Python code threads are running. As explained in:
>
> https://mail.google.com/mail/#search/stack+trace+python/12b114f3ec8f295b
>
> you can start with a background thread which monitors for the
> existence of a specific file, it that file exists, then do the stack
> trace and write it to a file. So, when issue occurs, you would touch
> the monitored file and trigger it.
>
> The actual generation of a Python stack trace for all threads is
> detailed in stacktraces() function in:
>
> http://groups.google.com/group/modwsgi/browse_frm/thread/b0fced31f191df59
>
> In that case the generation was triggered from a URL request, but if
> process is non response to new requests because of issue or you have
> more than one process and so don't know which will get request, you
> need to trigger it from background thread instead.
Here is some working code to be stuck at the end of your WGSI script
file. When you touch file '/tmp/dump-stack-traces.txt' it will cause
stack trace to be dumped for any threads executing inside of a request
at that time, as well as background Python threads. See example at end
of mail for case where Django was being used. I'll try and add this to
debugging techniques page in wiki.
import os
import sys
import time
import signal
import threading
import atexit
import Queue
import traceback
FILE = '/tmp/dump-stack-traces.txt'
_interval = 1.0
_running = False
_queue = Queue.Queue()
_lock = threading.Lock()
def _stacktraces():
code = []
for threadId, stack in sys._current_frames().items():
code.append("\n# ThreadID: %s" % threadId)
for filename, lineno, name, line in traceback.extract_stack(stack):
code.append('File: "%s", line %d, in %s' % (filename,
lineno, name))
if line:
code.append(" %s" % (line.strip()))
for line in code:
print >> sys.stderr, line
try:
mtime = os.path.getmtime(FILE)
except:
mtime = None
def _monitor():
while 1:
global mtime
try:
current = os.path.getmtime(FILE)
except:
current = None
if current != mtime:
mtime = current
_stacktraces()
# Go to sleep for specified interval.
try:
return _queue.get(timeout=_interval)
except:
pass
_thread = threading.Thread(target=_monitor)
_thread.setDaemon(True)
def _exiting():
try:
_queue.put(True)
except:
pass
_thread.join()
atexit.register(_exiting)
def _start(interval=1.0):
global _interval
if interval < _interval:
_interval = interval
global _running
_lock.acquire()
if not _running:
prefix = 'monitor (pid=%d):' % os.getpid()
print >> sys.stderr, '%s Starting stack trace monitor.' % prefix
_running = True
_thread.start()
_lock.release()
_start()
# EXAMPLE
[Wed Dec 08 04:36:56 2010] [error]
[Wed Dec 08 04:36:56 2010] [error] # ThreadID: 4352905216
[Wed Dec 08 04:36:56 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 497, in __bootstrap
[Wed Dec 08 04:36:56 2010] [error] self.__bootstrap_inner()
[Wed Dec 08 04:36:56 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 522, in __bootstrap_inner
[Wed Dec 08 04:36:56 2010] [error] self.run()
[Wed Dec 08 04:36:56 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 477, in run
[Wed Dec 08 04:36:56 2010] [error] self.__target(*self.__args,
**self.__kwargs)
[Wed Dec 08 04:36:56 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 72, in
_monitor
[Wed Dec 08 04:36:56 2010] [error] _stacktraces()
[Wed Dec 08 04:36:56 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 47, in
_stacktraces
[Wed Dec 08 04:36:56 2010] [error] for filename, lineno, name, line
in traceback.extract_stack(stack):
[Wed Dec 08 04:38:26 2010] [error]
[Wed Dec 08 04:38:26 2010] [error] # ThreadID: 4322832384
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 21, in
application
[Wed Dec 08 04:38:26 2010] [error] return _application(environ,
start_response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/core/handlers/wsgi.py",
line 245, in __call__
[Wed Dec 08 04:38:26 2010] [error] response =
middleware_method(request, response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/middleware.py",
line 36, in process_response
[Wed Dec 08 04:38:26 2010] [error] request.session.save()
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/backends/db.py",
line 63, in save
[Wed Dec 08 04:38:26 2010] [error]
obj.save(force_insert=must_create, using=using)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 434, in save
[Wed Dec 08 04:38:26 2010] [error] self.save_base(using=using,
force_insert=force_insert, force_update=force_update)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 527, in save_base
[Wed Dec 08 04:38:26 2010] [error] result = manager._insert(values,
return_id=update_pk, using=using)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/manager.py",
line 195, in _insert
[Wed Dec 08 04:38:26 2010] [error] return insert_query(self.model,
values, **kwargs)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/query.py",
line 1479, in insert_query
[Wed Dec 08 04:38:26 2010] [error] return
query.get_compiler(using=using).execute_sql(return_id)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/compiler.py",
line 783, in execute_sql
[Wed Dec 08 04:38:26 2010] [error] cursor = super(SQLInsertCompiler,
self).execute_sql(None)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/compiler.py",
line 727, in execute_sql
[Wed Dec 08 04:38:26 2010] [error] cursor.execute(sql, params)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/panels/sql.py",
line 95, in execute
[Wed Dec 08 04:38:26 2010] [error] stacktrace =
tidy_stacktrace(traceback.extract_stack())
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/panels/sql.py",
line 40, in tidy_stacktrace
[Wed Dec 08 04:38:26 2010] [error] s_path = os.path.realpath(s[0])
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/posixpath.py",
line 355, in realpath
[Wed Dec 08 04:38:26 2010] [error] if islink(component):
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/posixpath.py",
line 132, in islink
[Wed Dec 08 04:38:26 2010] [error] st = os.lstat(path)
[Wed Dec 08 04:38:26 2010] [error]
[Wed Dec 08 04:38:26 2010] [error] # ThreadID: 4320735232
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 21, in
application
[Wed Dec 08 04:38:26 2010] [error] return _application(environ,
start_response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/core/handlers/wsgi.py",
line 245, in __call__
[Wed Dec 08 04:38:26 2010] [error] response =
middleware_method(request, response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/middleware.py",
line 36, in process_response
[Wed Dec 08 04:38:26 2010] [error] request.session.save()
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/backends/db.py",
line 63, in save
[Wed Dec 08 04:38:26 2010] [error]
obj.save(force_insert=must_create, using=using)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 434, in save
[Wed Dec 08 04:38:26 2010] [error] self.save_base(using=using,
force_insert=force_insert, force_update=force_update)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 527, in save_base
[Wed Dec 08 04:38:26 2010] [error] result = manager._insert(values,
return_id=update_pk, using=using)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/manager.py",
line 195, in _insert
[Wed Dec 08 04:38:26 2010] [error] return insert_query(self.model,
values, **kwargs)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/query.py",
line 1479, in insert_query
[Wed Dec 08 04:38:26 2010] [error] return
query.get_compiler(using=using).execute_sql(return_id)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/compiler.py",
line 783, in execute_sql
[Wed Dec 08 04:38:26 2010] [error] cursor = super(SQLInsertCompiler,
self).execute_sql(None)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/compiler.py",
line 727, in execute_sql
[Wed Dec 08 04:38:26 2010] [error] cursor.execute(sql, params)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/panels/sql.py",
line 91, in execute
[Wed Dec 08 04:38:26 2010] [error] return self.cursor.execute(sql, params)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/backends/sqlite3/base.py",
line 200, in execute
[Wed Dec 08 04:38:26 2010] [error] return
Database.Cursor.execute(self, query, params)
[Wed Dec 08 04:38:26 2010] [error]
[Wed Dec 08 04:38:26 2010] [error] # ThreadID: 4323905536
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 21, in
application
[Wed Dec 08 04:38:26 2010] [error] return _application(environ,
start_response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/core/handlers/wsgi.py",
line 245, in __call__
[Wed Dec 08 04:38:26 2010] [error] response =
middleware_method(request, response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/middleware.py",
line 110, in process_response
[Wed Dec 08 04:38:26 2010] [error] return response
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/toolbar/loader.py",
line 78, in render_toolbar
[Wed Dec 08 04:38:26 2010] [error] return
render_to_string('debug_toolbar/base.html', context)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/loader.py",
line 186, in render_to_string
[Wed Dec 08 04:38:26 2010] [error] return t.render(context_instance)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/__init__.py",
line 175, in render
[Wed Dec 08 04:38:26 2010] [error] context.render_context.pop()
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/test/utils.py",
line 46, in instrumented_test_render
[Wed Dec 08 04:38:26 2010] [error] return self.nodelist.render(context)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/__init__.py",
line 799, in render
[Wed Dec 08 04:38:26 2010] [error] return
mark_safe(''.join([force_unicode(b) for b in bits]))
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/debug.py",
line 84, in render_node
[Wed Dec 08 04:38:26 2010] [error] return result
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/defaulttags.py",
line 183, in render
[Wed Dec 08 04:38:26 2010] [error] return nodelist.render(context)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/defaulttags.py",
line 258, in render
[Wed Dec 08 04:38:26 2010] [error] return self.nodelist_true.render(context)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/__init__.py",
line 799, in render
[Wed Dec 08 04:38:26 2010] [error] return
mark_safe(''.join([force_unicode(b) for b in bits]))
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/debug.py",
line 84, in render_node
[Wed Dec 08 04:38:26 2010] [error] return result
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/debug.py",
line 101, in render
[Wed Dec 08 04:38:26 2010] [error] return output
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/__init__.py",
line 586, in resolve
[Wed Dec 08 04:38:26 2010] [error] return obj
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/__init__.py",
line 702, in resolve
[Wed Dec 08 04:38:26 2010] [error] return value
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/template/__init__.py",
line 761, in _resolve_lookup
[Wed Dec 08 04:38:26 2010] [error] return current
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/panels/template.py",
line 122, in content
[Wed Dec 08 04:38:26 2010] [error] return
render_to_string('debug_toolbar/panels/templates.html', context)
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 59, in pformat
[Wed Dec 08 04:38:26 2010] [error] return
PrettyPrinter(indent=indent, width=width, depth=depth).pformat(object)
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 112, in pformat
[Wed Dec 08 04:38:26 2010] [error] return sio.getvalue()
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 167, in _format
[Wed Dec 08 04:38:26 2010] [error] return
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 228, in _repr
[Wed Dec 08 04:38:26 2010] [error] return repr
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 235, in format
[Wed Dec 08 04:38:26 2010] [error] return _safe_repr(object,
context, maxlevels, level)
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 285, in _safe_repr
[Wed Dec 08 04:38:26 2010] [error] return "{%s}" %
_commajoin(components), readable, recursive
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 318, in _safe_repr
[Wed Dec 08 04:38:26 2010] [error] return format %
_commajoin(components), readable, recursive
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 318, in _safe_repr
[Wed Dec 08 04:38:26 2010] [error] return format %
_commajoin(components), readable, recursive
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/pprint.py",
line 259, in _safe_repr
[Wed Dec 08 04:38:26 2010] [error] return ("%s%s%s" % (closure,
sio.getvalue(), closure)), True, False
[Wed Dec 08 04:38:26 2010] [error]
[Wed Dec 08 04:38:26 2010] [error] # ThreadID: 4352905216
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 497, in __bootstrap
[Wed Dec 08 04:38:26 2010] [error] self.__bootstrap_inner()
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 522, in __bootstrap_inner
[Wed Dec 08 04:38:26 2010] [error] self.run()
[Wed Dec 08 04:38:26 2010] [error] File:
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/threading.py",
line 477, in run
[Wed Dec 08 04:38:26 2010] [error] self.__target(*self.__args,
**self.__kwargs)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 72, in
_monitor
[Wed Dec 08 04:38:26 2010] [error] _stacktraces()
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 47, in
_stacktraces
[Wed Dec 08 04:38:26 2010] [error] for filename, lineno, name, line
in traceback.extract_stack(stack):
[Wed Dec 08 04:38:26 2010] [error]
[Wed Dec 08 04:38:26 2010] [error] # ThreadID: 4313858048
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 21, in
application
[Wed Dec 08 04:38:26 2010] [error] return _application(environ,
start_response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/core/handlers/wsgi.py",
line 245, in __call__
[Wed Dec 08 04:38:26 2010] [error] response =
middleware_method(request, response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/middleware.py",
line 36, in process_response
[Wed Dec 08 04:38:26 2010] [error] request.session.save()
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/backends/db.py",
line 63, in save
[Wed Dec 08 04:38:26 2010] [error]
obj.save(force_insert=must_create, using=using)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 434, in save
[Wed Dec 08 04:38:26 2010] [error] self.save_base(using=using,
force_insert=force_insert, force_update=force_update)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 496, in save_base
[Wed Dec 08 04:38:26 2010] [error]
manager.using(using).filter(pk=pk_val).exists())):
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/query.py",
line 496, in exists
[Wed Dec 08 04:38:26 2010] [error] return
self.query.has_results(using=self.db)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/query.py",
line 417, in has_results
[Wed Dec 08 04:38:26 2010] [error] return bool(compiler.execute_sql(SINGLE))
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/compiler.py",
line 727, in execute_sql
[Wed Dec 08 04:38:26 2010] [error] cursor.execute(sql, params)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/panels/sql.py",
line 95, in execute
[Wed Dec 08 04:38:26 2010] [error] stacktrace =
tidy_stacktrace(traceback.extract_stack())
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/backends/sqlite3/base.py",
line 200, in execute
[Wed Dec 08 04:38:26 2010] [error] return
Database.Cursor.execute(self, query, params)
[Wed Dec 08 04:38:26 2010] [error]
[Wed Dec 08 04:38:26 2010] [error] # ThreadID: 4323368960
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/htdocs/project.wsgi", line 21, in
application
[Wed Dec 08 04:38:26 2010] [error] return _application(environ,
start_response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/core/handlers/wsgi.py",
line 245, in __call__
[Wed Dec 08 04:38:26 2010] [error] response =
middleware_method(request, response)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/middleware.py",
line 36, in process_response
[Wed Dec 08 04:38:26 2010] [error] request.session.save()
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/contrib/sessions/backends/db.py",
line 63, in save
[Wed Dec 08 04:38:26 2010] [error]
obj.save(force_insert=must_create, using=using)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 434, in save
[Wed Dec 08 04:38:26 2010] [error] self.save_base(using=using,
force_insert=force_insert, force_update=force_update)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/base.py",
line 527, in save_base
[Wed Dec 08 04:38:26 2010] [error] result = manager._insert(values,
return_id=update_pk, using=using)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/manager.py",
line 195, in _insert
[Wed Dec 08 04:38:26 2010] [error] return insert_query(self.model,
values, **kwargs)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/query.py",
line 1479, in insert_query
[Wed Dec 08 04:38:26 2010] [error] return
query.get_compiler(using=using).execute_sql(return_id)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/compiler.py",
line 783, in execute_sql
[Wed Dec 08 04:38:26 2010] [error] cursor = super(SQLInsertCompiler,
self).execute_sql(None)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/models/sql/compiler.py",
line 727, in execute_sql
[Wed Dec 08 04:38:26 2010] [error] cursor.execute(sql, params)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/debug_toolbar/panels/sql.py",
line 91, in execute
[Wed Dec 08 04:38:26 2010] [error] return self.cursor.execute(sql, params)
[Wed Dec 08 04:38:26 2010] [error] File:
"/Library/WebServer/Sites/django-1/lib/python2.6/site-packages/django/db/backends/sqlite3/base.py",
line 200, in execute
[Wed Dec 08 04:38:26 2010] [error] return
Database.Cursor.execute(self, query, params)
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