Re: [Zope] Asking advice on a Zope stuck (or: what did I do wrong?)
Marco Bizzarri wrote at 2008-8-2 09:33 +0200: I installed DeadlockDebugger, and tried to have a dump from it, but it is unable to answer, at leasts it seems to me. So, I followed the recipe from ZopeLabs: http://www.zopelabs.com/cookbook/1073504990 and got a traceback from gdb. info threads gives the following: * 5 Thread 0xb5b29b90 (LWP 17713) 0xe410 in __kernel_vsyscall () 4 Thread 0xb5322b90 (LWP 17714) 0xe410 in __kernel_vsyscall () 3 Thread 0xb4b21b90 (LWP 17715) 0xe410 in __kernel_vsyscall () 2 Thread 0xb4320b90 (LWP 17716) 0xe410 in __kernel_vsyscall () 1 Thread 0xb7d4b8c0 (LWP 17687) 0xe410 in __kernel_vsyscall () I'm including the traceback. As you can see, the last lines tell (for all the threads) are: File /var/local/zope28/base288/lib/python/Shared/DC/ZRDB/Results.py, line 55, in __init__ if n != name: aliases.append((n, SQLAlias(name))) This is unbelievable. The above Python code should not block (and not cause an infinite recursion) other than for memory requests. At C-level, you see to be in a kernel call. Look closer at the C level tracebacks to find out which kernel call this is. You may need to have a Python with debug symbols to get reliable C level tracebacks. -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Asking advice on a Zope stuck (or: what did I do wrong?)
Hi all. While using ab to perform stress tests on an application, I've run in a situation where I have a locked Zope. I installed DeadlockDebugger, and tried to have a dump from it, but it is unable to answer, at leasts it seems to me. So, I followed the recipe from ZopeLabs: http://www.zopelabs.com/cookbook/1073504990 and got a traceback from gdb. info threads gives the following: * 5 Thread 0xb5b29b90 (LWP 17713) 0xe410 in __kernel_vsyscall () 4 Thread 0xb5322b90 (LWP 17714) 0xe410 in __kernel_vsyscall () 3 Thread 0xb4b21b90 (LWP 17715) 0xe410 in __kernel_vsyscall () 2 Thread 0xb4320b90 (LWP 17716) 0xe410 in __kernel_vsyscall () 1 Thread 0xb7d4b8c0 (LWP 17687) 0xe410 in __kernel_vsyscall () I'm including the traceback. As you can see, the last lines tell (for all the threads) are: File /var/local/zope28/base288/lib/python/Shared/DC/ZRDB/Results.py, line 55, in __init__ if n != name: aliases.append((n, SQLAlias(name))) File string, line 1, in ? Just one note: environment is Linux, Zope 2.8.8, python2.3 I understand Zope+python is quite old, so I'm just asking if there is some general purpose advice on what to do in this case. Regards Marco -- Marco Bizzarri http://iliveinpisa.blogspot.com/ tb Description: Binary data ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
