Server User Manual

HTTP/1.1
4-12 Oracle HTTP Server powered by Apache Performance Guide
Shorter Response Times
Persistent connections can improve total response time for a web interaction that
involves multiple HTTP requests, because the delay of setting up a connection only
happens once.
Consider the total time required, without persistent connections, for a client to
retrieve a web page with three images from the server.
With persistent connections, the response time for the same request is reduced:
Activity Seconds
Establish connection 1
Produce and send the text
portion of the page
5
Establish connection 1
Transfer first image file 2
Establish connection 1
Transfer second image file 2
Establish connection 1
Transfer third image file 2
Total
15
Activity Seconds
Establish connection 1
Produce and send the text
portion of the page
5
Transfer first image file 2
Transfer second image file 2
Transfer third image file 2
Total
12