16_WASv7_RuntimeProvisioning - IBM Software Group IBM...

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16_WASv7_RuntimeProvisioning.ppt Page 1 of 13 ® IBM Software Group © 2007 IBM Corporation Updated September 15, 2008 IBM ® WebSphere ® Application Server V7 Runtime provisioning This presentation will discuss the runtime provisioning component of WebSphere Application Server version 7.
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16_WASv7_RuntimeProvisioning.ppt Page 2 of 13 IBM Software Group 2 Runtime provisioning © 2007 IBM Corporation Overview s V7 Runtime Provisioning U Historical startup and runtime memory footprint U Benefits of Runtime Provisioning U A little info on how it works This presentation will start by discussing historical runtime and memory footprint aspects of WebSphere Application Server version 7. It will then discuss the benefits of the runtime provisioning component and how it works.
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16_WASv7_RuntimeProvisioning.ppt Page 3 of 13 IBM Software Group 3 Runtime provisioning © 2007 IBM Corporation Section WebSphere Application Server Historical WebSphere Application Server Historical Startup and Runtime Startup and Runtime This section will discuss historical aspects of the startup and runtime of WebSphere Application Server.
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16_WASv7_RuntimeProvisioning.ppt Page 4 of 13 IBM Software Group 4 Runtime provisioning © 2007 IBM Corporation Historical facts and figures s Historically since WebSphere Application Server V4.0 Startup time and memory footprint have grown U Approximately 15% growth in startup time per release U Approximately 15% growth in memory footprint per release U Approximately 16 Meg increase in JVM footprint per release U Result of significant new functionality per release s Pre V7 servers aggressively start components that might not be used by deployed applications In the past WebSphere Application Server’s startup time and memory footprint have grown with each release. With significant new functionality included in each release of the Application Server, startup time has grown slightly with each release, as well as the Application Server’s Memory footprint. Prior to version 7, servers would start components of the application server that may not be used by deployed applications regardless of use.
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16_WASv7_RuntimeProvisioning.ppt Page 5 of 13 IBM Software Group 5 Runtime provisioning © 2007 IBM Corporation Previous work to reduce footprint s Asynchronous start capability for runtime components s Lazy EJB initialization s Framework uses Java 5 shared class cache for WebSphere runtime classes U (limited to platforms using IBM JRE) s Light-weight Runtime Configuration Service reduces up to 20% of runtime classes loaded previously at startup There has been work in previous versions of WebSphere Application Server to reduce the amount of growth in the memory footprint. This work has included the introduction of an Asynchronous start capability for runtime
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16_WASv7_RuntimeProvisioning - IBM Software Group IBM...

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