Information Objectives Officers Chair's Comments Miscellaneous Vendor Support Help us out ! CMG Headquarters Interesting Links Seminars Next Previous Summary Directions Downloads Speaker Papers Odds & Ends E-Mail NCACMG			Abstracts for the September 15, 1999 seminar Challenges for Capacity Planning in E-commerce E-commerce sites face unpredictable demands and yet have to be able to deliver adequate quality of service to their customers. Sizing for peak loads is not cost-effective since traffic at peak times can be 5 to 10 times normal traffic. This talk discusses the challenges facing IT managers in these environments. Topics include: workload characterization resource management site architectures performance modeling WLM Advanced Topics This session will review some of the new capabilities being provided via workload manager. Information on scheduling environment, WLM managed initiators, as well as application environments will be discussed. The presentation will also review information on goal setting strategies for new workloads, such as UNIX System Services and DDF. Performance Explorer of Data Sharing in Parallel Sysplex for Capacity Planners Fueled by the exponential growth of Web-centric mission critical applications and especially those that enable e-Business, it is all but certain that the demand for continuous availability, near-linear scalability and higher throughput rates for OLTP will continue unabated. Introduced in 1994, Data Sharing in Parallel Sysplex is poised to become the cornerstone of critical online transaction processing. This paper presents a performance primer on Data Sharing in Parallel Sysplex that is tailored to capacity planners: from novice to chief "plexicologist"(*). The primer follows the life-cycle of a Coupling Facility request for a close-up view of the key performance components with insightful analyses including Little's Law, classic queuing feedback phenomenon, response time "elongators" and offering the "definitive" answer as to whether or not CF operations should be synchronous. The paper ends with a performance explorer that enables any capacity planner to put in place a simple and cost-effective performance assurance daily health-check for the Parallel Sysplex environment. 100 Days and Counting: Y2K: Status, Challenges, Lessons Learned With just over 100 days until January 1, 2000, everyone is holding his/her breath, worrying about financial chaos and air traffic nightmares. With so much attention focused on whether applications will handle dates properly, few have focused on how the Y2K effort has affected and will continue to affect OS/390 capacity and performance. This session examines the Y2K problem from a capacity/performance perspective and discusses what we've learned from the Y2K effort that can help us manage our systems better in the future.