Hi Wei, This might be due to HTTP keepalives. Please turn the line "option httpclose" into "option http-server-close" and let us know the results.
Baptiste On Wed, Sep 25, 2013 at 7:33 AM, Wei Kong <[email protected]> wrote: > Hi, > > We noticed something strange with haproxy. we have one haproxy node in front > of a web server implemented inefficiently, such as loading 25 js files). > Both servers are located in EU, when testing from EU, there is not > difference in response time connecting to the web server directly or > connecting through haproxy. > > However, when testing it from US, because of the latency, it takes 7 seconds > to load if connecting to the web server directly but 15 seconds if > connecting through haproxy and this behavior is very consistent. We also > tested from China and it takes 19 seconds directly but 30 seconds through > haproxy. > > We have very simple haproxy.cfg, see below. > > Any idea why haproxy adds 10second in the latency case? > > Thanks > Wei > > global > daemon > maxconn 10000 > stats socket /var/run/haproxy.stat mode 666 level admin > > defaults > mode http > retries 3 > timeout connect 300000ms > timeout client 300000ms > timeout server 300000ms > option httplog > log 127.0.0.1 local0 > log 127.0.0.1 local1 notice > option forwardfor > option httpclose > option http-pretend-keepalive > > frontend node_frontend > maxconn 10000 > backlog 10000 > bind *:80 > bind *:443 ssl crt /etc/haproxy/pem crt /data/certs/ > acl is_websocket hdr(Upgrade) -i WebSocket > acl is_websocket path_beg /socket.io > acl is_app_521e2579d654b30000000550 hdr_beg(host) -i test.test.com > > use_backend websocket_app_521e2579d654b30000000550 if is_websocket > is_app_521e2579d654b30000000550 > use_backend node_app_521e2579d654b30000000550 if > is_app_521e2579d654b30000000550 > default_backend default > > backend default > mode http > server server0 127.0.0.1:7000 maxconn 20 > > backend node_app_521e2579d654b30000000550 > mode http > server server_52029d2d0d120104610bc722 172.31.29.16:1011 maxconn 4 > > backend websocket_app_521e2579d654b30000000550 > mode http > server server_52029d2d0d120104610bc722 172.31.29.16:1011 maxconn 1000 > > listen stats :8081 > mode http > balance roundrobin > stats uri / > server none 127.0.0.1
