I could verify getting the same log messages on my system. This however seems to be not directly related to the problem. I see the same messages, when testing it on Ubuntu 11.10. But the apache remains stable and repsonsive on this older version of ubuntu.
I have found some interesting behavior, when using the -k switch with ab to ensure there are really only the specified amount of processes used and no process is busy waiting for the connection to close: $ ab -k -n 5000 -c 999 http://localhost/ .... all requests will complete without error $ curl http://localhost/ <html><body><h1>It works!</h1> <p>This is the default web page for this server.</p> <p>The web server software is running but no content has been added, yet.</p> </body></html> $ curl http://localhost/ ... no answer so here you can literally see how the connection #1001 (the "magic number", that appeared before) is breaking apache. i think maybe its some kind of buffer running full? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to apache2 in Ubuntu. https://bugs.launchpad.net/bugs/1028470 Title: apache2+ssl hangs on high load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1028470/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs