Using Monitoring Data To Tune Your Server - Sun Microsystems Sun Java System Web Server 7.0 Manual

Using Monitoring Data to Tune Your Server

TABLE 2–1
Web Server 6.1 parameter
NativePoolQueueSize in
magnus.conf
NativePoolStackSize in
magnus.conf
RqThrottle in magnus.conf
RqThrottleMin in
magnus.conf
TerminateTimeout in
magnus.conf
Using Monitoring Data to Tune Your Server
This section describes the performance information available through the Admin Console,
perfdump, the command-line interface, and stats-xml. It discusses how to analyze that
information and tune some parameters to improve your server's performance.
The default tuning parameters are appropriate for all sites except those with very high volume.
The only settings that large sites might regularly need to change are the thread pool and keep
alive settings. Tune these settings at the configuration level in the Admin Console or using wadm
commands. It is also possible to tune the server by editing the elements directly in the
server.xml file, but editing the server.xml file directly can lead to complications.
perfdump monitors statistics in the following categories, which are described in the following
sections. In most cases these statistics are also displayed in the Admin Console, command-line
interface, and stats-xml output. The following sections contain tuning information for all
these categories, regardless of what method you are using to monitor the data:
"Connection Queue Information" on page 49
■
"HTTP Listener (Listen Socket) Information" on page 51
■
"Keep-Alive Information" on page 53
■
"Session Creation (Thread) Information" on page 57
■
"File Cache Information (Static Content)" on page 59
■
"Thread Pool Information" on page 65
■
"DNS Cache Information" on page 68
■
In addition, the statistics information displayed through the Admin Console, the
command-line interface, and stats-xml contains other categories not contained in the
perfdump output. Tuning these statistics is discussed in the following sections:
48 Sun Java System Web Server 7.0 Update 1 Performance Tuning, Sizing, and Scaling Guide •
Parameter Mapping to server.xml
Web Server 7.0 server.xml
element or attribute
Unchanged
Unchanged
max-threads element of
the thread-pool element
min-threads element of
the thread-pool element
Unchanged
(Continued)
Admin Console Location
Configuration's
Performance tab ⇒
HTTP tab
Configuration's
Performance tab ⇒
HTTP tab
wadm command
set-thread-pool-prop
command's max-threads
property
set-thread-pool-prop
command's min-threads
property