Installing and Configuring HP WebQoS Peak on Linux

12 Chapter2
HP WebQoS Peak on Linux
What is HP WebQoS Peak on Linux?
provided by your web site. It controls the number and length of sessions
admitted to the web server, to ensure that the web server does not
become overloaded. It can be installed and configured for the Apache web
server.
What is HP WebQoS Peak on Linux?
HP WebQoS Peak on Linux is a software plug-in (module), which runs
inside an HTTP server. The HTTP server currently supported is Apache.
You can configure WebQoS to make certain decisions based on changing
system conditions. For example, it can admit, reject, redirect, or defer
new sessions based on system load, or to end active sessions based on the
interval between requests and/or the length of a session. In addition, it
maintains several operation and performance statistics which you can
view in a web client window.
Viewing the Server Statistics
HP WebQoS Peak maintains a series of statistics, which you can view
on-line by pointing your web client (browser) to the following URL:
http://servername/hpac/. From the about.hpac page you can access
either the Statistics table or the Isolate table by selecting the
appropriate link. You can also view an explanation of what each statistic
means, by selecting the field name.
What is a Session?
A session is an HTTP request or sequence of HTTP requests made to a web
server by a single user. A simple session might consist of a request for a
server’s home page. If that page contains images, the session would also
consist of requests for each image.
A more complicated and longer session might consist of a request for a
server’s home page, following a link to a catalog, browsing the catalog
and adding items to a shopping cart, and finally supplying payment
information to complete a purchase.