Melissa Evans schrieb: > I've modified grappy.py, > http://www.stacken.kth.se/~mattiasa/projects/grappy/, a postfix policy > daemon for greylisting. to use LDAP as a backend instead of SQL (with > python-ldap.) The daemon runs fine when testing but when I put it under > load it core dumps quickly. What little analysis I know how to do shows > similar information every time. Any advice on where to go from here?
It looks like a memory allocation bug, e.g. caused by a double free, or possibly a buffer overrun. It's unlikely that the Python interpreter itself has such a bug, so it's likely rather caused in an extension module (e.g. the ldap module). Analysing such a problem is tedious. You should create a debug build of Python (which already has some memory checks) and see whether it reports anything. Then, you could try a debug malloc next (such as dmalloc.com). If you have a license, you can use Purify, if not, try Valgrind (not sure whether it runs on Solaris, though). Another such library is ElectricFence. Good luck, Martin -- http://mail.python.org/mailman/listinfo/python-list
