I had an httpd 2.2 (under Centos 6) with mod_proxy forwarding requests to an IIS 7.5 in HTTPS. I replaced it with an httpd 2.4 (Centos 7) and I expected a huge increase in performance due to the connection pooling on the back but it only increased by 10%.
Doing the same test with an httpd back-end leads to 50% increase.
Any idea why IIS behaves this way? Can we change anything on IIS (or httpd)?
Remark: proxy-nokeepalive is not defined
Thanks a lot
