Mercurial > hg > nginx-quic
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Fixing cpu hog with all upstream servers marked "down".
The following configuration causes nginx to hog cpu due to infinite loop
in ngx_http_upstream_get_peer():
upstream backend {
server 127.0.0.1:8080 down;
server 127.0.0.1:8080 down;
}
server {
...
location / {
proxy_pass http://backend;
}
}
Make sure we don't loop infinitely in ngx_http_upstream_get_peer() but stop
after resetting peer weights once.
Return 0 if we are stuck. This is guaranteed to work as peer 0 always exists,
and eventually ngx_http_upstream_get_round_robin_peer() will do the right
thing falling back to backup servers or returning NGX_BUSY.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Thu, 18 Aug 2011 16:52:38 +0000 |
| parents | 551102312e19 |
| children | ed470a7bf7fd |
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<html> <head> <title>Welcome to nginx!</title> </head> <body bgcolor="white" text="black"> <center><h1>Welcome to nginx!</h1></center> </body> </html>