IBM 6.1.X manual Internet Explorer Support of Vary Header, Caching Proxy Tuning

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Internet Explorer Support of Vary Header

When Internet Explorer 7 is sent a ‘vary’ http header, it is unable to cache that reply effectively. To configure WebSphere portal to not send the vary header to IE 7, log in as portal administrator and navigate to Administration -> Portal Settings -> Supported Clients. Then select IE 7 as the browser and remove support for the ‘vary’ header.

Caching Proxy Tuning

The following are the settings and tunings specified in the reverse proxy’s ibmproxy.conf file for the Web 2.0 performance test.

Table 17: Reverse Proxy Settings

Parameter	Setting Used	Additional Information

Proxy /wps/* http://{server-name}/wps/*		Proxy for /wps

Proxy /wps_semanticTag* http://{server-		Proxy for /wps_semanticTag
name}/wps_semanticTag* :80

Proxy /searchfeed* http://{server-name}/searchfeed* :80		Proxy for /searchfeed

ConnThreads	15

ServerConnPool	on

MaxSocketPerServer	20

CacheTimeMargin	5 seconds

CacheFileSizeLimit	2 M

flexibleSocks	off

LimitRequestFieldSize	16384

CompressionFilterEnable	C:\PROGRA~1\IBM\edge\
	cp\Bin\mod_z.dll

CompressionFilter	Image/bitmap,text/css,text/	Compresses everything except text/html,
AddContentType	xml,application/xml	application/atom+xml, text/plain,
		application/x-javascript. Portal
		compresses those types. Experiments
		were done where reverse proxy gzipped
		those files as well which caused the
		reverse proxy CPU to become a
		bottleneck. If a more powerful reverse
		proxy server was available, it might make
		sense to do all gzipping on the reverse
		proxy. Note that fixes for PMR 43866,499
		were applied to Edge Server v6.02 to get
		proper gzipping behavior.

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W E BS P HE R E P O R T AL V 6 . 1 T U N I N G G U I D E

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Contents IBM WebSphere Portal IBM WebSphere Portal software family Your world. Your wayContents Web Server Tuning Portlet Caching General Information Figures About this Document Performance Tuning Overview Environment Considerations Base Portal Tuning Application Server Tuning How to get to Admin ConsoleParameter Linux Solaris Windows2003 Initial 1792 2048POWER5 New Area Size Xmn320m Xmn256m Xmn768m Xmn1024m Parameter Value Additional InformationTimeout Session MinutesWeb Container Thread pool Size Name Value PropagationHow to Set Context Pool Setting Default ValueWebSphere Portal Services Default Value Definition UsedG I S T R Y S E R V I C E Default Value Value Used Cache NameDatabase Tuning Database Database name Datasource name2 O N a I X S E T U P Db2 reorgchk update statistics on table all Db2 reorgchk current statistics on table all reorgchk.txt A C L E D a T a B a S E S E R V E R T U N I N G AIXTHREADSCOPE=S Parameter ValueExecute Directory Server Tuning Db2 update db config for idsldap using dbheapWeb Server Tuning Linux Windows Additional InformationMinSpareThreads MaxSpareThreads Operating System Tuning N U T W O R K T U N I N G How-to-Setndd -set /dev/tcpPARAMETER Value L a R I S C O N T a I N E R Required Fixes MaxthreadtasksWEB 2.0 Theme Tuning Navigator Service PropertiesParameter Setting Used JVM Initial and Maximum Heap SizeCaching Proxy Tuning Parameter Setting Used Additional InformationInternet Explorer Support of Vary Header # uncommented these to enable statics to be cached # set cache-control public for various static contentPortlet Caching ExpiresActive OnMany Pages Tuning DB2 Database TuningRelease DB Parameter Cache Manager Service WEB Content Management Tuning WebSphere Portal Service Properties Cache NameWCM Object Cache WCM Configuration Service JCR Text SearchDB2 Tuning Authoring Environment DB2 BP4 Composite Applications Tuning Cache Manager Service PropertiesComposite Applications Best Practices BS P HE R E P O R T AL V 6 T U N I N G G U I D E Cluster Tuning Value trueHow-To Set ThreadLimit ServerLimit Session Persistence To Database Tuning Parameter Setting Additional DetailsVertical Cluster Tuning IBM Tivoli Directory Server Tuning Other Performance Tuning Options Improving Portal Startup PerformanceManaging the Retrieval of User Attributes BS P HE R E P O R T AL V 6 T U N I N G G U I D E Use of Dynamic Content Features Real-World Network Considerations BrowserMatch Mozilla/4 gzip-only-text/html Websphere Portal Caches General InformationBS P HE R E P O R T AL V 6 T U N I N G G U I D E BS P HE R E P O R T AL V 6 T U N I N G G U I D E Cache Usage Patterns Pattern invalidation checkingCache Instances Portal Access Control Cache Hierarchy Com.ibm.wps.ac.PermissionCollectionCacheCom.ibm.wps.ac.AccessControlUserContextCache Com.ibm.wps.ac.ProtectedResourceCacheCom.ibm.wps.ac.OwnedResourcesCache Com.ibm.wps.ac.RolesCacheCom.ibm.wps.ac.ExternalOIDCache Com.ibm.wps.ac.ChildResourcesCache Com.ibm.wps.ac.ApplicationRoleOIDCacheCom.ibm.wps.ac.ApplicationRoleDescriptorCache Com.ibm.wps.ac.ApplicationRolesForPrincipalCache Com.ibm.wps.ac.ContainedRolesCacheCom.ibm.wps.ac.ApplicationRoleChildrenCache Com.ibm.wps.puma.DNOIDCache / com.ibm.wps.puma.OIDDNCacheCom.ibm.wps.datastore.PortalIdCache.vpPerLpid.cache Com.ibm.wps.datastore.PortalIdCache.explicitLpidPerVPCom.ibm.wps.datastore.pageinstance.OIDCache Com.ibm.wps.datastore.pageinstance.DerivationCache Com.ibm.wps.datastore.pageinstance.DynamicNodeCacheCom.ibm.wps.model.content.impl.ResourceCache Com.ibm.wps.model.factory.SimpleCacheKeyCom.ibm.wsp.mode.content.impl.TopologyCache Com.ibm.wps.model.factory.ContentModelCache.liveCom.ibm.wps.model.factory.ContentModelCache.isolated Com.ibm.wps.model.factory.URLMappingCache.liveCom.ibm.wps.model.content.impl.DynamicLoadCache Com.ibm.wps.model.factory.URLMappingCache.isolatedCom.ibm.wps.model.factory.MultiModelCache.live Com.ibm.wps.model.factory.MultiModelCache.isolatedCom.ibm.wps.services.vpmapping.VirtualPortalIDToRealmCache Com.ibm.wps.model.impl.RuntimeClientMap.userAgent2clientWps.mappingurl.ContextsCache Wps.mappingurl.LookupCacheCom.ibm.wps.services.vpmapping.VirtualPortalIDToURLCache Com.ibm.wps.services.vpmapping.URLToVirtualPortalIDCacheWsrp.cache.portletdescription Wsrp.cache.servicedescription Wsrp.cache.portlet.instanceWsrp.cache.producer.user Wsrp.cache.portlet.windowWsrp.producer.portletpool.pops Wsrp.producer.portletpool.ccpsProcessintegration.PendingTasksCache Wp.te.transformationAssociationCacheCom.ibm.wps.policy.services.PolicyCacheManager Com.ibm.wps.policy.services.UserPolicyNodeCacheManagerCom.lotus.cs.services.directory.wmm.WMMDirectoryService Com.lotus.cs.services.UserEnvironmentCom.lotus.cs.services.domino.DominoService Wp.xml.configitems Com.ibm.wps.pe.portletentityPortletMenuCache RegistryService Com.ibm.workplace.searchmenu.helper.SearchMenuCacheHelperExample Scenarios BS P HE R E P O R T AL V 6 T U N I N G G U I D E R T a L S W I T H L O N G S E S S I O N T I M E O U T S BS P HE R E P O R T AL V 6 T U N I N G G U I D E WEB Content Management Caches Services/cache/iwk/strategy WCM Item cachingServices/cache/iwk/objectsummary WCM Summary WCM Cache InstancesServices/cache/iwk/module Services/cache/iwk/processing Advanced and Resour cesServices/cache/iwk/session Session Services/cache/iwk/menu Menu Services/cache/iwk/nav NavigatorServices/cache/iwk/abspath Absolute path Services/cache/iwk/missed Missed ItemsServices/cache/iwk/libparent Library Parent Services/cache/iwk/draftSummary Draft SummaryUser cache Appendix A. References Mark Alkins, Manager Lee Backstrom, Document CoordinatorBS P HE R E P O R T AL V 6 T U N I N G G U I D E