Müller-Clostermann, Bruno; Tilev, M.:
Macroscopic Workload Management and Mainframe Capacity Planning
In: Tagungsband Vierter Workshop des GI-ITG-Fachausschusses MMB zur Leistungs-, Zuverlässigkeits- und Verlässlichkeitsbewertung von Kommunikationsnetzen und verteilten Systemen / Heidtmann, K.; Wolfinger, B. (Hrsg.). - Hamburg, 2007
2007Buchaufsatz/Kapitel in Sammelwerk
Macroscopic Workload Management and Mainframe Capacity Planning
Müller-Clostermann, BrunoLSF; Tilev, M.


Since in capacity planning activities the available information with respect to workload and system configuration is often rather coarse we propose a technique which is based on a “macroscopic” (high level) view. Based on the analysis of utilization data collected from mainframe monitoring we introduce a heuristic algorithm for the allocation of logical partitions (LPARs) to multiprocessors. Subsequently queuing theoretic formulas for M/M/m- and G/G/m-models can be used to check to which extent a proposed LPAR allocation will fulfil prespecified service levels. The approach is illustrated by data taken from real world scenarios.