Client-Side Presentation | Sun Microsystems 820434310 manual

Understanding Operational Requirements

Client-Side

Presentation

Browser

Pure

HTML

Java

Applet

Desktop

Java

Application

Other

Device

J2EE

Client

Server-Side Presentation

Web

Server

JSP

JSP

Java

Servlet

J2EE

Platform

Server-Side Enterprise

Business Logic Information

System

EJB

Container

EJB

EJB

EJB

J2EE

Platform

FIGURE 1–1Java EE Application Model

Moderately complex enterprise applications can be developed entirely using servlets and JSP technology. More complex business applications often use Enterprise JavaBeans (EJB) components. The Application Server integrates the web and EJB containers in a single process. Local access to EJB components from servlets is very efficient. However, some application deployments may require EJB components to execute in a separate process; and be accessible from standalone client applications as well as servlets. Based on the application architecture, the server administrator can employ the Application Server in multiple tiers, or simply host both the presentation and business logic on a single tier.

It is important to understand the application architecture before designing a new Application Server deployment, and when deploying a new business application to an existing application server deployment.

20	Sun GlassFish Enterprise Server 2.1 Performance Tuning Guide • January 2009

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Sun Microsystems 820434310 manual Client-Side Presentation

Contents

Sun GlassFish Enterprise Server 2.1 Performance Tuning Guide Sun Microsystems, Inc Network Circle Santa Clara, CA 090304@21990 Contents Tuning the Enterprise Server 100 Tuning for High-Availability Figures Page Tables Page Examples Page Sun GlassFish Enterprise Server Documentation Set Table P-1Books in the Enterprise Server Documentation Set Default Paths and File Names Table P-2Default Paths and File Names Symbol Conventions Symbol ConventionsTypographic Conventions Table P-3Typographic Conventions Sun Welcomes Your Comments Documentation, Support, and TrainingThird-Party Web Site References 1Performance Tuning Roadmap Process Overview Performance Tuning Sequence Performance Tuning Roadmap Understanding Operational Requirements Application Architecture Client-Side Presentation Encryption User Authentication and AuthorizationSecurity Requirements Hardware Resources General Tuning Concepts Administration Capacity Planning 2Factors That Affect Performance User Expectations To Determine Capacity Further Information Use StringBuffer to Concatenate Strings Java Programming GuidelinesAvoid Serialization and Deserialization String str = testing str = str + abc Assign null to Variables That Are No Longer NeededDeclare Methods as final Only If Necessary Declare Constants as static final Java Server Page and Servlet Tuning Synchronize Only When NecessaryDeclare Method Arguments final Use DataHandlers for Soap Attachments Suggested Coding Practices General GuidelinesAvoid Shared Modified Class Variables Http Session Handling Optimize SSL Configuration and Deployment TipsDisable Security Manager Monitoring EJB Components EJB Performance TuningGoals Following is a sample of the monitoring output Asadmin get -m monitorableObject Monitoring Individual EJB Components Use Caching General GuidelinesUse High Performance Beans Using Local and Remote Interfaces Cache and Pool Tuning TipsUse the Appropriate Stubs Remove Unneeded Stateful Session Beans Using Pass-By-Reference Semantics Prefer Local Interfaces Improving Performance of EJB Transactions Using Special Techniques Configure Jdbc Resources as One-Phase Commit ResourcesUse the Least Expensive Transaction Attribute Version Consistency Entity-mapping cmp-field-mapping To enable request partitioning When new.VCVERSIONNUMBER = old.VCVERSIONNUMBER DeclareRequest Partitioning Cmp-field-mapping consistency Stateful Session Beans Tuning Tips for Specific Types of EJB ComponentsEntity Beans Read-Only Entity Beans Checkpoint only when neededStateless Session Beans Pre-fetching Container Managed Relationship CMR Beans Refresh period OrderTable.OrderID = OrderLineTable.OrderLineOrderID Jdbc and Database Access Use Jdbc DirectlyEncapsulate Business Logic in Entity EJB Components Close Connections Tuning Message-Driven Beans Asadmin set server.mdb-container.max-pool-size = valueUse getConnection Tune the Message-Driven Bean’s Pool Size Cache Bean-Specific Resources Limit Use of JMS Connections Tuning the Enterprise Server Deployment Settings Logger Settings Disable Auto-deploymentDisable Dynamic Application Reloading Use Pre-compiled JavaServer Pages Web Container Settings General SettingsSession Properties Session Timeout Log Levels Disable Dynamic JSP Reloading Manager Properties Reap Interval EJB Container Settings Tuning the EJB ContainerMonitoring the EJB Container Overview of EJB Pooling and Caching Tuning the EJB Pool EJB Pool Settings Tuning the EJB Cache EJB Cache Settings Pool and Cache Settings for Individual EJB Components Commit Option Determining the best commit option Java Message Service Settings Transaction Service SettingsMonitoring the Transaction Service Viewing Monitoring Information Asadmin get -m serverInstance.transaction-service Tuning the Transaction ServiceDisable Distributed Transaction Logging Http Service Settings Monitoring the Http ServiceRecover On Restart Automatic Recovery Keypoint Interval Enabled List --user admin --portProperty name=statsProfilingEnabled value=false DNS Cache Information dns HitRatio Caching DNS EntriesLimit DNS Lookups to Asynchronous NameLookups File Cache Information file-cache Keep Alive keep-alive Tuning the Http Service Access LogConnection Queue Request Processing Initial Thread Count Request TimeoutThread Count Max Connections Keep AliveBuffer Length DNS Lookup Enabled Http ProtocolHttp File Cache Time Out Max Files Count Hash Init SizeMax Age Small/Medium File Size and File Size Limit Acceptor Threads Tuning Http Listener SettingsNetwork Address ORB Settings OverviewHow a Client Connects to the ORB Monitoring the ORB Tuning the ORB 3Tunable ORB SettingsConnection Statistics Thread Pools Tunable ORB Parameters ORB Thread Pool Parameters Controlling connections between client and server ORB Using multiple connectionsClient ORB Properties Load Balancing Thread Pool SizingExamining Iiop Messages Improving ORB Performance with Java Serialization Thread Pool Settings Tuning Thread Pools Unix /Linux onlyTo Enable Java Serialization Using JSG for Application Clients Jdbc Connection Pool Settings Tuning Jdbc Connection PoolsResources Monitoring Jdbc Connection Pools 4Connection Pool Sizing Pool Size SettingsTimeout Settings Isolation Level Settings Connection Validation Settings Connector Connection Pool Settings Transaction Support Testpool Page Tuning the Java Runtime System Java Virtual Machine Settings Tuning the Garbage Collector Managing Memory and Garbage Collection Additional Information Choosing the Garbage Collection AlgorithmTo use the CMS collector Other Garbage Collector Settings Tracing Garbage Collection 1Maximum Address Space Per Process Tuning the Java HeapGuidelines for Java Heap Sizing Heap Tuning Parameters Xmsvalue Xmxvalue Survivor Ratio Sizing Example 4-1Heap Configuration on SolarisRebasing DLLs on Windows Enter this command rebase -b 0x6000000 *.dll To rebase the Application Server’s DLLs For more information on tuning the JVM, see Page Server Scaling Processors Networking MemoryDisk Space Tuning Parameters Netstat -nP tcpwc -l Sizing the Connection Hash TableNdd -get /dev/tcp tcpconnhash Linux Configuration File Descriptor Setting Tuning for Solaris on File Descriptors on IP Stack Settings on IP Stack Settings File Descriptors Tuning for Linux platforms Session required /lib/security/pamlimits.so Virtual MemorySoft Nofile 65535 Hard Disk I/O Settings TCP/IP SettingsTo tune the TCP/IP settings Network Interface Tuning UltraSPARC T1-Based Systems Tuning Operating System and TCP Settings 2Tuning 64-bit Systems for Performance Benchmarking Start Options Disk ConfigurationNetwork Configuration 106 Calculating Hadb Data Device Size Tuning HadbDisk Use Tuning Data Device Size Hadbm set TotalDatadeviceSizePerNode Memory Allocation Placing Hadb files on Physical DisksBeware last flush/fputs took too long Vmstat -S NodeNo TotalSize FreeSize Usage 512 504 PerformanceDataBufferPoolSize Hadbm set DataBufferPoolSize Tuning DataBufferPoolSizeLogBufferSize Tuning LogBufferSize InternalLogbufferSizeHadbm resourceinfo --logbuf Node No Avail Free Size Tuning InternalLogbufferSize NumberOfLocksHadbm resourceinfo --nilogbuf Hadbm set InternalLogbufferSize Summary Tuning NumberOfLocksCalculating the number of locks Timeouts Jdbc connection pool timeoutsLoad Balancer timeouts Node No Avail Free Waits 50000 Tuning the Enterprise Server for High-Availability Operating System ConfigurationHadb timeouts No space left on device Time-based Tuning Session Persistence FrequencyWeb-method Session Persistence Scope Session SizeSession Modified-session Configuring the Jdbc Connection Pool Checkpointing Stateful Session Beans Configuring the Load Balancer Enabling the Health Checker Tuning for High-Availability 121 122 Index Index 125 Monitoring transaction service Session timeout 128