strange nginx hang after ~18600 requests

[gadh]

hi maxim
since i cannot send you my code for now, could you point me to the reason/s
to the lack of resources, so i can search for a solution ? can you suggest
on a monitoring/debug tool that can help ? 
(valgrind could not find any specific problem rather than the regular notes
on the nginx core code, which BTW i suggest to monitor)

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,234161,234168#msg-234168