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Sun Microsystems 820434310 manual Thread Pool Settings, Tuning Thread Pools Unix /Linux only

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Thread Pool Settings

▼To Enable Java Serialization

You must set this property on all servers that you want to use JSG.

1In the tree component, expand the Configurations node.

2Expand the desired node.

3Select the JVM Settings node

4In the JVM Settings page, choose the JVM Options tab.

5Click Add JVM Option, and enter the following value:

-Dcom.sun.CORBA.encoding.ORBEnableJavaSerialization=true

6Click Save

7Restart the Application Server.

Using JSG for Application Clients

If an application uses standalone non-web clients (application clients), and you want to use JSG, you must also set a system property for the client applications. A common way to do this is to add the property to the Java command line used to start the client application, for example:

java -Dcom.sun.CORBA.encoding.ORBEnableJavaSerialization=true -Dorg.omg.CORBA.ORBInitialHost=gollum -Dorg.omg.CORBA.ORBInitialPort=35309

MyClientProgram

Thread Pool Settings

You can both monitor and tune thread pool settings through the Admin Console. To configure monitoring with the Admin Console, open the page Configurations > config-name> Monitoring. To view monitoring information with the Admin Console, open the page Stand-Alone Instances > instance-name(Monitor).

Tuning Thread Pools (Unix /Linux only)

Configure thread pool settings through the Admin Console at Configurations > config-name> Thread Pools.

Since threads on Unix/Linux are always operating system (OS)-scheduled, as opposed to user-scheduled, Unix/Linux users do not need to use native thread pools. Therefore, this option

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

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Sun Microsystems 820434310 manual Thread Pool Settings, Tuning Thread Pools Unix /Linux only, To Enable Java Serialization

Contents

Sun GlassFish Enterprise Server 2.1 Performance Tuning Guide Sun Microsystems, Inc 4150 Network Circle Santa Clara, CA U.S.AThis distribution may include materials developed by third parties Contents Tuning Tips for Specific Types of EJB Components Contents Thread Pool SettingsJava Virtual Machine Settings Solaris 10 Platform-Specific Tuning Information6 Tuning for High-Availability Figures Java EE Application ModelPage Tuning 64-bit Systems for Performance Benchmarking Performance Tuning RoadmapTables Page Heap Configuration on Solaris ExamplesHeap Configuration on Windows Page Preface Sun GlassFish Enterprise Server Documentation SetDefault Paths and File Names TABLE P-2 Default Paths and File NamesTABLE P-1 Books in the Enterprise Server Documentation Set ContinuedSymbol Conventions Typographic ConventionsThe following table explains symbols that might be used in this book Symbol ConventionsDocumentation, Support, and Training Third-Party Web Site ReferencesSun Welcomes Your Comments Indicates menu itemTuning “General Tuning Concepts” on page “Further Information” on pageProcess Overview “Process Overview” on pagePerformance Tuning Sequence Performance Tuning RoadmapUnderstanding Operational Requirements Application Architecture“Application Architecture” on page “Security Requirements” on page “Hardware Resources” on pageClient-Side Presentation Server-Side PresentationServer-Side Enterprise Business Logic Information System BrowserSecurity Requirements User Authentication and AuthorizationEncryption Hardware Resources Administration General Tuning ConceptsAdministration Guide Capacity Planning User Expectations To Determine Capacity1 Determine performance on a single CPU 2 Determine vertical scalabilityFurther Information Further InformationTuning Your Application “Java Server Page and Servlet Tuning” on page“EJB Performance Tuning” on page Java Programming GuidelinesAssign null to Variables That Are No Longer Needed Declare Methods as final Only If NecessaryDeclare Constants as static final Avoid FinalizersJava Server Page and Servlet Tuning Synchronize Only When NecessaryDeclare Method Arguments final Use DataHandlers for SOAP AttachmentsSuggested Coding Practices General GuidelinesAvoid Shared Modified Class Variables HTTP Session HandlingDisable Security Manager Configuration and Deployment TipsOptimize SSL EJB Performance Tuning “Using Local and Remote Interfaces” on page“Using Special Techniques” on page “Tuning Tips for Specific Types of EJB Components” on pageThe following is a sample of the monitoring output Monitoring Individual EJB Components Use High Performance Beans General GuidelinesUse Caching Using Local and Remote Interfaces Cache and Pool Tuning TipsUse the Appropriate Stubs Remove Unneeded Stateful Session BeansUsing Pass-By-Reference Semantics Prefer Local InterfacesUse XA-Capable Data Sources Only When Needed Improving Performance of EJB TransactionsUse Container-Managed Transactions Don’t Encompass User Input TimeUsing Special Techniques Configure JDBC Resources as One-Phase Commit ResourcesUse the Least Expensive Transaction Attribute Version ConsistencyOtherwise, ejbStore stores the data and completes as normal Request Partitioning To enable request partitioning2 Add the additional threadpool IDs to the Application Server’s ORB Tuning Tips for Specific Types of EJB Components Entity BeansStateful Session Beans 4 Restart the Application ServerStateless Session Beans Checkpoint only when neededRead-Only Entity Beans Pre-fetching Container Managed Relationship CMR Beans Refresh periodThis clause indicates an outer join. These OrderLines are pre-fetched JDBC and Database Access Use JDBC DirectlyEncapsulate Business Logic in Entity EJB Components Close ConnectionsUse getConnection Tuning Message-Driven BeansTune the Message-Driven Bean’s Pool Size Cache Bean-Specific Resources Limit Use of JMS ConnectionsTuning the Enterprise Server Deployment Settings“Deployment Settings” on page “Logger Settings” on page “Web Container Settings” on page “EJB Container Settings” on pageLogger Settings Disable Auto-deploymentDisable Dynamic Application Reloading Use Pre-compiled JavaServer PagesWeb Container Settings General SettingsSession Properties Session Timeout “Session Properties Session Timeout” on pageDisable Dynamic JSP Reloading Manager Properties Reap IntervalEJB Container Settings Tuning the EJB ContainerMonitoring the EJB Container Overview of EJB Pooling and CachingTuning the EJB Pool EJB Pool SettingsTuning the EJB Cache EJB Cache SettingsPool and Cache Settings for Individual EJB Components Removal TimeoutTimeout Max Cache SizeCommit Option Determining the best commit optionJava Message Service Settings Transaction Service SettingsMonitoring the Transaction Service Viewing Monitoring InformationTuning the Transaction Service Disable Distributed Transaction LoggingHTTP Service Settings Monitoring the HTTP ServiceRecover On Restart Automatic Recovery “Monitoring the HTTP Service” on pageEnabled DNS Cache Information dnsCacheEntries CurrentCacheEntries / MaxCacheEntries “DNS Cache Information dns” on pageHitRatio Caching DNS EntriesLimit DNS Lookups to Asynchronous NameLookupsFile Cache Information file-cache Keep Alive keep-aliveTuning the HTTP Service Access Log“Access Log” on page “Request Processing” on page Connection QueueThread Count Request TimeoutInitial Thread Count Buffer Length Keep AliveMax Connections DNS Lookup Enabled HTTP ProtocolHTTP File Cache Time OutMax Files Count Hash Init SizeMax Age Small/Medium File Size and File Size LimitNetwork Address Tuning HTTP Listener SettingsAcceptor Threads ORB Settings OverviewHow a Client Connects to the ORB Monitoring the ORBConnection Statistics Tuning the ORBThread Pools Tunable ORB Parameters ORB Thread Pool ParametersClient ORB Properties Using multiple connectionsControlling connections between client and server ORB Examining IIOP Messages Thread Pool SizingLoad Balancing Improving ORB Performance with Java Serialization Thread Pool Settings Tuning Thread Pools Unix /Linux onlyTo Enable Java Serialization Using JSG for Application ClientsJDBC Connection Pool Settings Tuning JDBC Connection Pools“Pool Size Settings” on page ResourcesPool Size Settings Timeout Settings“Timeout Settings” on page “Isolation Level Settings” on pageIsolation Level Settings Connection Validation SettingsConnector Connection Pool Settings Transaction Supportasadmin create-connector-connection-pool --raname jdbcra Chapter 3 Tuning the Enterprise Serverconnectiondefinition javax.sql.DataSource transactionsupport LocalTransaction TESTPOOLPage Tuning the Java Runtime System Java Virtual Machine Settings“Java Virtual Machine Settings” on page “Managing Memory and Garbage Collection” on pageTuning the Garbage Collector “Other Garbage Collector Settings” on page“Tuning the Java Heap” on page “Rebasing DLLs on Windows” on page Managing Memory and Garbage Collection1 Make sure that the system is not using 100 percent of its CPU 2 Configure HADB timeouts, as described in the Administration Guide3 Configure the CMS collector in the server instance Choosing the Garbage Collection AlgorithmOther Garbage Collector Settings Tracing Garbage CollectionTuning the Java Heap “Heap Tuning Parameters” on pageGuidelines for Java Heap Sizing “Guidelines for Java Heap Sizing” on pageHeap Tuning Parameters Xmsvalue XmxvalueRebasing DLLs on Windows Survivor Ratio Sizing1 Make installdir\ bin the default directory. cd installdir\bin To rebase the Application Server’s DLLs5 Restart the Application Server Example 4-2 Heap Configuration on WindowsFrequently Asked Questions About the Java HotSpot Virtual Machine Java HotSpot VM OptionsPerformance Documentation for the Java HotSpot VM Java performance web pagePage Tuning the Operating System and Platform “Solaris 10 Platform-Specific Tuning Information” on page“Tuning for the Solaris OS” on page “Linux Configuration” on page “Tuning for Solaris on x86” on pageMemory Disk SpaceNetworking Npeakr / tSolaris 10 Platform-Specific Tuning Information Tuning for the Solaris OSTuning Parameters “Tuning Parameters” on page “File Descriptor Setting” on pageSizing the Connection Hash Table on pageLinux Configuration File Descriptor SettingTuning for Solaris on “File Descriptors” on page “IP Stack Settings” on pageIP Stack Settings File DescriptorsTuning for Linux platforms “Network Interface” on page “Disk I/O Settings” on page“TCP/IP Settings” on page “File Descriptors” on page “Virtual Memory” on pageVirtual Memory Disk I/O Settings TCP/IP SettingsTo tune the TCP/IP settings 2 Enable direct memory access DMATuning UltraSPARC T1-Based Systems Tuning Operating System and TCP Settings4 Reboot the system 2 Add the following to /etc/sysctl.confTABLE 5-2 Tuning 64-bit Systems for Performance Benchmarking Note that the IPGE driver version isNetwork Configuration Disk ConfigurationStart Options LDPRELOAD32=/usr/lib/mpss.so.1 export LDPRELOAD32 export MPSSHEAP=4M Tuning for High-Availability Tuning HADB“Tuning HADB” on page “Tuning the Enterprise Server for High-Availability” on pageTuning Data Device Size hadbm set TotalDatadeviceSizePerNodeMemory Allocation Placing HADB files on Physical Disks“Timeouts” on page PerformanceDataBufferPoolSize “DataBufferPoolSize” on page “LogBufferSize” on pageTuning DataBufferPoolSize LogBufferSizeTuning LogBufferSize InternalLogbufferSizeTuning InternalLogbufferSize NumberOfLocksCalculating the number of locks Tuning NumberOfLocksSummary JDBC connection pool timeouts TimeoutsLoad Balancer timeouts Tuning the Enterprise Server for High-Availability Operating System ConfigurationHADB timeouts “Tuning Session Persistence Frequency” on pageWeb-method Tuning Session Persistence FrequencyTime-based Session Persistence Scope Session Sizesession modified-sessionConfiguring the JDBC Connection Pool Checkpointing Stateful Session BeansEnabling the Health Checker Configuring the Load BalancerConnection Pools” on page health-checker Page Index caching Continued servlet results, 31 capacity planningPage Page monitoring Continued transaction service Page x86 XA-capable data sources, 38-39 -Xms Xmx, 88 Sun GlassFish Enterprise Server 2.1 Performance Tuning Guide JanuaryIndex