how to make nginx loadbalancer give 404 when all upstream servers are down

[karkunpavan]

Indeed. It's right there I did not even see it. Thanks itpp2012 and Francis
Daly.

since ab and httperf are behaving unexpectedly, I think best way is to parse
the nginx logs to find out dropped requests.

Thanks a lot :) :)

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,260980,261001#msg-261001