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Sun Microsystems 820434310 manual Contents, Thread Pool Settings, Java Virtual Machine Settings

Models: 820434310

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	Contents
Improving ORB Performance with Java Serialization	............................................................. 75
Thread Pool Settings	76
Tuning Thread Pools (Unix /Linux only)	76
Resources	77
JDBC Connection Pool Settings	77
Connector Connection Pool Settings	80
4 Tuning the Java Runtime System	83
Java Virtual Machine Settings	83
Managing Memory and Garbage Collection	84
Tuning the Garbage Collector	84
Tracing Garbage Collection	86
Other Garbage Collector Settings	86
Tuning the Java Heap	87
Rebasing DLLs on Windows	89
Further Information	91
5 Tuning the Operating System and Platform	93
Server Scaling	93
Processors	93
Memory	94
Disk Space	94
Networking	94
Solaris 10 Platform-Specific Tuning Information	95
Tuning for the Solaris OS	95
Tuning Parameters	95
File Descriptor Setting	97
Linux Configuration	97
Tuning for Solaris on x86	98
File Descriptors	99
IP Stack Settings	99
Tuning for Linux platforms	100
File Descriptors	100
Virtual Memory	101
Network Interface	102

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Contents

Sun Microsystems, Inc 4150 Network Circle Santa Clara, CA U.S.A Sun GlassFish Enterprise Server 2.1 Performance Tuning GuideThis distribution may include materials developed by third parties Contents Tuning Tips for Specific Types of EJB Components Thread Pool Settings ContentsJava Virtual Machine Settings Solaris 10 Platform-Specific Tuning Information6 Tuning for High-Availability Java EE Application Model FiguresPage Tables Performance Tuning RoadmapTuning 64-bit Systems for Performance Benchmarking Page Heap Configuration on Windows ExamplesHeap Configuration on Solaris Page Sun GlassFish Enterprise Server Documentation Set PrefaceTABLE P-2 Default Paths and File Names Default Paths and File NamesTABLE P-1 Books in the Enterprise Server Documentation Set ContinuedTypographic Conventions Symbol ConventionsThe following table explains symbols that might be used in this book Symbol ConventionsThird-Party Web Site References Documentation, Support, and TrainingSun Welcomes Your Comments Indicates menu item“General Tuning Concepts” on page “Further Information” on page TuningProcess Overview “Process Overview” on pagePerformance Tuning Roadmap Performance Tuning SequenceApplication Architecture Understanding Operational Requirements“Application Architecture” on page “Security Requirements” on page “Hardware Resources” on pageServer-Side Presentation Client-Side PresentationServer-Side Enterprise Business Logic Information System BrowserEncryption User Authentication and AuthorizationSecurity Requirements Hardware Resources Administration Guide General Tuning ConceptsAdministration Capacity Planning To Determine Capacity User Expectations1 Determine performance on a single CPU 2 Determine vertical scalabilityFurther Information Further Information“Java Server Page and Servlet Tuning” on page Tuning Your Application“EJB Performance Tuning” on page Java Programming GuidelinesDeclare Methods as final Only If Necessary Assign null to Variables That Are No Longer NeededDeclare Constants as static final Avoid FinalizersSynchronize Only When Necessary Java Server Page and Servlet TuningDeclare Method Arguments final Use DataHandlers for SOAP AttachmentsGeneral Guidelines Suggested Coding PracticesAvoid Shared Modified Class Variables HTTP Session HandlingOptimize SSL Configuration and Deployment TipsDisable Security Manager “Using Local and Remote Interfaces” on page EJB Performance Tuning“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 Caching General GuidelinesUse High Performance Beans Cache and Pool Tuning Tips Using Local and Remote InterfacesUse the Appropriate Stubs Remove Unneeded Stateful Session BeansPrefer Local Interfaces Using Pass-By-Reference SemanticsImproving Performance of EJB Transactions Use XA-Capable Data Sources Only When NeededUse Container-Managed Transactions Don’t Encompass User Input TimeConfigure JDBC Resources as One-Phase Commit Resources Using Special TechniquesUse the Least Expensive Transaction Attribute Version ConsistencyOtherwise, ejbStore stores the data and completes as normal 2 Add the additional threadpool IDs to the Application Server’s ORB To enable request partitioningRequest Partitioning Entity Beans Tuning Tips for Specific Types of EJB ComponentsStateful Session Beans 4 Restart the Application ServerRead-Only Entity Beans Checkpoint only when neededStateless Session Beans Refresh period Pre-fetching Container Managed Relationship CMR BeansThis clause indicates an outer join. These OrderLines are pre-fetched Use JDBC Directly JDBC and Database AccessEncapsulate Business Logic in Entity EJB Components Close ConnectionsTune the Message-Driven Bean’s Pool Size Tuning Message-Driven BeansUse getConnection Limit Use of JMS Connections Cache Bean-Specific ResourcesDeployment Settings Tuning the Enterprise Server“Deployment Settings” on page “Logger Settings” on page “Web Container Settings” on page “EJB Container Settings” on pageDisable Auto-deployment Logger SettingsDisable Dynamic Application Reloading Use Pre-compiled JavaServer PagesGeneral Settings Web Container SettingsSession Properties Session Timeout “Session Properties Session Timeout” on pageManager Properties Reap Interval Disable Dynamic JSP ReloadingTuning the EJB Container EJB Container SettingsMonitoring the EJB Container Overview of EJB Pooling and CachingEJB Pool Settings Tuning the EJB PoolEJB Cache Settings Tuning the EJB CacheRemoval Timeout Pool and Cache Settings for Individual EJB ComponentsTimeout Max Cache SizeDetermining the best commit option Commit OptionTransaction Service Settings Java Message Service SettingsMonitoring the Transaction Service Viewing Monitoring InformationDisable Distributed Transaction Logging Tuning the Transaction ServiceMonitoring the HTTP Service HTTP Service SettingsRecover On Restart Automatic Recovery “Monitoring the HTTP Service” on pageDNS Cache Information dns EnabledCacheEntries CurrentCacheEntries / MaxCacheEntries “DNS Cache Information dns” on pageCaching DNS Entries HitRatioLimit DNS Lookups to Asynchronous NameLookupsKeep Alive keep-alive File Cache Information file-cacheAccess Log Tuning the HTTP Service“Access Log” on page “Request Processing” on page Connection QueueInitial Thread Count Request TimeoutThread Count Max Connections Keep AliveBuffer Length HTTP Protocol DNS Lookup EnabledHTTP File Cache Time OutHash Init Size Max Files CountMax Age Small/Medium File Size and File Size LimitAcceptor Threads Tuning HTTP Listener SettingsNetwork Address Overview ORB SettingsHow a Client Connects to the ORB Monitoring the ORBThread Pools Tuning the ORBConnection Statistics ORB Thread Pool Parameters Tunable ORB ParametersControlling connections between client and server ORB Using multiple connectionsClient ORB Properties Load Balancing Thread Pool SizingExamining IIOP Messages Improving ORB Performance with Java Serialization Tuning Thread Pools Unix /Linux only Thread Pool SettingsTo Enable Java Serialization Using JSG for Application ClientsTuning JDBC Connection Pools JDBC Connection Pool Settings“Pool Size Settings” on page ResourcesTimeout Settings Pool Size Settings“Timeout Settings” on page “Isolation Level Settings” on pageConnection Validation Settings Isolation Level SettingsTransaction Support Connector Connection Pool SettingsChapter 3 Tuning the Enterprise Server asadmin create-connector-connection-pool --raname jdbcraconnectiondefinition javax.sql.DataSource transactionsupport LocalTransaction TESTPOOLPage Java Virtual Machine Settings Tuning the Java Runtime System“Java Virtual Machine Settings” on page “Managing Memory and Garbage Collection” on page“Other Garbage Collector Settings” on page Tuning the Garbage Collector“Tuning the Java Heap” on page “Rebasing DLLs on Windows” on page Managing Memory and Garbage Collection2 Configure HADB timeouts, as described in the Administration Guide 1 Make sure that the system is not using 100 percent of its CPU3 Configure the CMS collector in the server instance Choosing the Garbage Collection AlgorithmTracing Garbage Collection Other Garbage Collector Settings“Heap Tuning Parameters” on page Tuning the Java HeapGuidelines for Java Heap Sizing “Guidelines for Java Heap Sizing” on pageXmsvalue Xmxvalue Heap Tuning ParametersSurvivor Ratio Sizing Rebasing DLLs on WindowsTo rebase the Application Server’s DLLs 1 Make installdir\ bin the default directory. cd installdir\bin5 Restart the Application Server Example 4-2 Heap Configuration on WindowsJava HotSpot VM Options Frequently Asked Questions About the Java HotSpot Virtual MachinePerformance Documentation for the Java HotSpot VM Java performance web pagePage “Solaris 10 Platform-Specific Tuning Information” on page Tuning the Operating System and Platform“Tuning for the Solaris OS” on page “Linux Configuration” on page “Tuning for Solaris on x86” on pageDisk Space MemoryNetworking Npeakr / tTuning for the Solaris OS Solaris 10 Platform-Specific Tuning InformationTuning Parameters “Tuning Parameters” on page “File Descriptor Setting” on pageon page Sizing the Connection Hash TableFile Descriptor Setting Linux Configuration“File Descriptors” on page “IP Stack Settings” on page Tuning for Solaris onFile Descriptors IP Stack Settings“Network Interface” on page “Disk I/O Settings” on page Tuning for Linux platforms“TCP/IP Settings” on page “File Descriptors” on page “Virtual Memory” on pageVirtual Memory TCP/IP Settings Disk I/O SettingsTo tune the TCP/IP settings 2 Enable direct memory access DMATuning Operating System and TCP Settings Tuning UltraSPARC T1-Based Systems4 Reboot the system 2 Add the following to /etc/sysctl.confNote that the IPGE driver version is TABLE 5-2 Tuning 64-bit Systems for Performance BenchmarkingStart Options Disk ConfigurationNetwork Configuration LDPRELOAD32=/usr/lib/mpss.so.1 export LDPRELOAD32 export MPSSHEAP=4M Tuning HADB Tuning for High-Availability“Tuning HADB” on page “Tuning the Enterprise Server for High-Availability” on pagehadbm set TotalDatadeviceSizePerNode Tuning Data Device SizePlacing HADB files on Physical Disks Memory AllocationPerformance “Timeouts” on pageDataBufferPoolSize “DataBufferPoolSize” on page “LogBufferSize” on pageLogBufferSize Tuning DataBufferPoolSizeInternalLogbufferSize Tuning LogBufferSizeNumberOfLocks Tuning InternalLogbufferSizeSummary Tuning NumberOfLocksCalculating the number of locks Load Balancer timeouts TimeoutsJDBC connection pool timeouts Operating System Configuration Tuning the Enterprise Server for High-AvailabilityHADB timeouts “Tuning Session Persistence Frequency” on pageTime-based Tuning Session Persistence FrequencyWeb-method Session Size Session Persistence Scopesession modified-sessionCheckpointing Stateful Session Beans Configuring the JDBC Connection PoolConnection Pools” on page Configuring the Load BalancerEnabling the Health Checker health-checker Page caching Continued servlet results, 31 capacity planning IndexPage Page monitoring Continued transaction service Page Index Sun GlassFish Enterprise Server 2.1 Performance Tuning Guide Januaryx86 XA-capable data sources, 38-39 -Xms Xmx, 88