Figure 2: Graph illustrating Requests/sec Vs Completed Sessions/sec 

F

G

H

What was even more interesting was when the same data is analysed from a client's 

perspective.  For a series of HTTP requests that would be typical of that involved in an 

online transaction or a session as they are referred to, 

I

J

K

J

L

I

I

K

!

M

I

J

N

O

I

J

I

I

O

I

!

P

J

J

J

I

K

K

I

Q

I

O

L

J

K

K

I

!

To deal with this issue, QoS was implemented by developing a modified version of the 

apache server. It allowed each request to be classified according to two methods 

1. User Class Based Access: This uses the clients IP address, cookies or some other 

method to distinguish the requests and give appropriate priority to it