On Mar 20, 10:22 am, a...@pythoncraft.com (Aahz) wrote: > How many processes do you have running? What kind of guarantee do you
One process. No threads, no forking. > have that there's only one process if you think there should be only one? > What's on the other side of the socket? If there's no consistent place, A preforking daemon. > is it always the same object type involved or function/method call? I'm > not at all familiar with Django, but it might be using threads > internally. Django doesn't use threads and neither do I. It doesn't deadlock in any consistent location that I can find. > Have you tried dumping core and using gdb to find out more about the > process state? Yeah, just did. I need the debuginfo for proper symbols, but here's an initial backtrace. #0 0x0084d7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2 #1 0x009dbc1f in sem_w...@glibc_2.0 () from /lib/tls/libpthread.so.0 #2 0x00a7ce1e in PyThread_acquire_lock () from /usr/lib/ libpython2.3.so.1.0 #3 0x00a7ff07 in _PyObject_GC_Del () from /usr/lib/libpython2.3.so. 1.0 #4 0x00a29991 in PyCFunction_Call () from /usr/lib/libpython2.3.so. 1.0 #5 0x00a5c51c in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #6 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #7 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #8 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #9 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #10 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #11 0x00a19e8e in PyFunction_SetClosure () from /usr/lib/ libpython2.3.so.1.0 #12 0x00a06637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0 #13 0x00a0ddc8 in PyMethod_New () from /usr/lib/libpython2.3.so.1.0 #14 0x00a06637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0 #15 0x00a581b0 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.3.so.1.0 #16 0x00a50dda in _PyUnicodeUCS4_IsAlpha () from /usr/lib/ libpython2.3.so.1.0 #17 0x00a29991 in PyCFunction_Call () from /usr/lib/libpython2.3.so. 1.0 #18 0x00a5c51c in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #19 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #20 0x00a5cd99 in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #21 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #22 0x00a19e8e in PyFunction_SetClosure () from /usr/lib/ libpython2.3.so.1.0 #23 0x00a06637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0 #24 0x00a581b0 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.3.so.1.0 #25 0x00a8147f in PyErr_CheckSignals () from /usr/lib/libpython2.3.so. 1.0 #26 0x00a81548 in PyErr_CheckSignals () from /usr/lib/libpython2.3.so. 1.0 #27 0x00a57fa1 in Py_MakePendingCalls () from /usr/lib/libpython2.3.so. 1.0 #28 0x00a58f4d in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #29 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #30 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #31 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #32 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #33 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #34 0x00a19e8e in PyFunction_SetClosure () from /usr/lib/ libpython2.3.so.1.0 #35 0x00a06637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0 #36 0x00a0ddc8 in PyMethod_New () from /usr/lib/libpython2.3.so.1.0 #37 0x00a06637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0 #38 0x00a581b0 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.3.so.1.0 #39 0x00a50dda in _PyUnicodeUCS4_IsAlpha () from /usr/lib/ libpython2.3.so.1.0 #40 0x00a29991 in PyCFunction_Call () from /usr/lib/libpython2.3.so. 1.0 #41 0x00a5c51c in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #42 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #43 0x00a5cd99 in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #44 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #45 0x00a19e8e in PyFunction_SetClosure () from /usr/lib/ libpython2.3.so.1.0 #46 0x00a06637 in PyObject_Call () from /usr/lib/libpython2.3.so.1.0 #47 0x00a5b998 in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #48 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #49 0x00a5cd99 in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #50 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #51 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #52 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #53 0x00a5d98b in _PyEval_SliceIndex () from /usr/lib/libpython2.3.so. 1.0 #54 0x00a5e0a6 in PyEval_EvalCodeEx () from /usr/lib/libpython2.3.so. 1.0 #55 0x00a5e36d in PyEval_EvalCode () from /usr/lib/libpython2.3.so.1.0 #56 0x00a77827 in PyErr_Display () from /usr/lib/libpython2.3.so.1.0 #57 0x00a78952 in PyRun_SimpleFileExFlags () from /usr/lib/ libpython2.3.so.1.0 #58 0x00a799a4 in PyRun_AnyFileExFlags () from /usr/lib/ libpython2.3.so.1.0 #59 0x00a7e69e in Py_Main () from /usr/lib/libpython2.3.so.1.0 #60 0x080485b2 in main () It looks to me like it's blocking in pthread_mutex_lock, synchronizing on a critical section for thread safety. Looks like a bug to me. I went to report it, but there's no 2.3 version in the python bug tracker so I'm assuming it's no longer supported. Mike -- http://mail.python.org/mailman/listinfo/python-list
