HP WebQoS Peak for HP-UX Concepts and Operation Guide

38 Chapter4

HP WebQoS Peak for the Zeus Web Server

Conﬁguring HP WebQoS for Zeus

conﬁgured in config.ac.

Admit Sessions

For the default value, the load threshold is set to 2.

To calculate the load threshold, do the following:

1. Run the top command. Note the ﬁrst listed “Load averages” and the

percentage listed under “IDLE” of “Cpu states.”

Example 4-1 Sample Output from the top Command

System: web_server Wed Apr 22 10:41:59 1998

Load averages: 1.45, 1.46, 1.78

149 processes: 145 sleeping, 3 running, 1 stopped

Cpu states:

LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS

1.45 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%

2. If IDLE is greater than zero, then set the threshold to

(100 - IDLE)/100.

If IDLE equals zero, then set the threshold to the ﬁrst listed load

average.

Using the above sample output, you would set the load threshold to

1.45.

Run top when performance is poor and acceptable to determine an

Table 4-1 HP WebQoS for Zeus Conﬁgurable Parameters: Admit Sessions

Parameter Description

Shutdown After the speciﬁed number of seconds, do not admit any new

sessions and reject all remaining sessions.

Always Disable HP WebQoS and admit all sessions to the web

server. If you are permanently disabling HP WebQoS, you

should remove HP WebQoS from your system (see

“Removing HP WebQoS for Zeus” on page 43 for more

information).

Load If the load is less than this speciﬁed amount, admit the

session. The load threshold works best when a web

application is processor-intensive.