WebSphere Application Server Performance Tuning Toolkit

Websphere? Application Server Performance Tuning Toolkit is an Eclipse-based smart tool designed to help users tune WebSphere application by using , data analysis, and statistical inference techniques The performance of the Server. The goal is to help users find bottlenecks and tune applications appropriately.

Background knowledge

With the wide deployment of Java EE-based enterprise-class multi-tiered architecture applications, more and more performance issues are occurring and difficult to diagnose. Multi-layered architectures make performance problems difficult to locate and spend more time and effort investigating and locating performance bottlenecks. and the consequences of performance problems can be serious.

Monitoring and tuning performance is especially important in order for WebSphere application Server application capabilities to be maximized. WebSphere Application Server Performance Tuning Toolkit can help you accomplish this task.

Overview

WebSphere Application Server Performance Tuning Toolkit (PTT) is an Eclipse-based smart tool designed to help users monitor and find performance bottlenecks by using data analysis and statistical inference techniques. The tool collects performance data from a JMX, from the PMI (performance monitoring Interface, performance monitoring interface) of the WebSphere application Server, and then presents a plain picture to the user There are a number of charts and tables to locate bottlenecks and to properly tune them.

The main feature of this tool, compared to other tools, is the ability to provide a dynamic framework that allows users to define rules appropriate to their systems, which greatly increases the accuracy of performance problem detection and diagnosis. Figure 1 summarizes the main features of the tool.

Figure 1:performance Summary of main functions of Tuning Toolkit

Some common rules have been defined to detect performance degradation and to take action automatically. For example, an alert is generated in the following situations:

• If the heapsize reaches the maximum heap value.
• If the thread pool reaches the threshold value.
• If the CPU utilization reaches 90%.
• If a servlet error occurs.
• If a connection time-out error occurs.
• If the thread waits for a connection.
• If more than 1000 prepared statements are ignored.
• If the application tries to use an invalid session.
• If there is no space for new session use.
• If a pending thread has been declared.
• If a transaction is rolled back.
• If a transaction times out.

You can also define your own rules according to the system instructions. For example, you can set an appropriate response time threshold for each serverlet, as shown below.

Rule "Servletevent" when   servlentevent (responsetime>1500, name== "trade") and then   String description = " Response time extends the limits ";p Rocessdata.addalert (" servlet ", description);} End

Benefits and Features

The performance Tuning Toolkit offers a number of benefits:

Performance Tuning Toolkit has many advantages:

• WebSphere Application Server's lightweight software eliminates the need to install or integrate anything to the server side.
• Real-time monitoring and interactive analysis.
• Rule-based event handling that allows users to add their own diagnostic logic.
• High scalability.
• Easy-to-use interface.

It also has some key features:

• Collect data from PMI and merge the data into the data cube.
• Rule-based event handling.
• Analyze the data through a graphical view and drill down to the detail data. See Figure 2 and Figure 3. Figure 2: Graph view Analysis Figure 3: Drill down to detail data
• Generate artifacts (thread dumps and heap dumps) or enable tracing.

Installing and using the installation

To install Peformance Tuning Toolkit, you need to download the compressed file and unzip the file. Then click the PerfTuningToolkit.exe file to start the installation.

Use Performance Tuning Toolkit

First, add one or more hosts, and then configure the connection. Once the connection is set up, the tool automatically obtains the topology and server information, which is then stored in the tool. You can add, edit, or delete hosts at any time.

Add a Host

Click Add A to create a new host, see Figure 4.

Figure 4: Adding a host

Enter the host information and, if security is enabled, Select the security enabled box. And then click OK. The host is displayed in the hosts panel on the left. See Figure 5.

Figure 5: Setting up host information

Connect to Host

In the left panel, double-click the host name to connect to the host. You will then be asked if you want to customize the PIM settings with the displayed string. Click Yes to connect to the server and monitor it.

Get information about the host

Click the server name in the topology panel, and the Monitor window will appear on the right side of the Hosts pane, as shown in 6.

Figure 6: Monitoring the Host

The Monitor window displays statistical information and trend graphs. It is easy to analyze trends from multiple angles and find potential problems in the server. There are a number of tabs at the bottom of the page that allow you to get a variety of information. You can expand or collapse items on each tab as needed.

Monitoring time

There are several images in the Monitor window that can be used to display information about a variety of times: servlet Response, Transaction Response time, Jdbc Response, servlet throughput, Transaction throughput, Jdbc throughput, Concurrency, Http Session, CPU usage, Java Heap, and Alert. See Figure 7.

Figure 7: Monitoring time

Merge time interval

The merge interval option is the time interval that is used to control the monitoring curve. There are three options:autoajustinterval,combineinterval , and disintegrationinterval. When one is clicked, the curve time interval changes immediately and the curve is redrawn. See Figure 8.

Figure 8: Merge time interval

Performance Tuning Toolkit also provides debugging help features such as generating thread dumps, raw heap dumps, and enabling tracing.

Generate dump

To generate a dump, select the server on the Hosts panel and select from the Operation menu Generatse Thread dump or Generate Heap dump , shown in 9.

Figure 9: Generate dump

Enable tracing

To enable tracing, Select the server on the Hosts Panel and select enable from the operation menu Trace , shown in 10.

Figure 10: Enable tracing

In the trace Detail window, you can select an existing tracking type or manually enter tracking information in the Trace dialog box, as shown in 11.

Figure 11: Enter tracking information

Edit a rule file

Custom rules for detecting performance degradation and locating bottlenecks are saved in the rules file. To check or Edit a rule file, select editRules from the Analysis menu. Figure 12 shows the rule file.

Figure 12: Edit Rule File

This syntax is very flexible and easy to use. Over time, more and more rules are added to the tool.

Download

description	name	size
performance Tuning Toolkit for Windows	Performancetuningtoolkit2_win32.zip	260 MB
performance Tuning Toolkit for Linux	Performancetuningtoolkit2_linux32.zip	215 MB

WebSphere Application Server Performance Tuning Toolkit