Topic: Linux Certification Testing Topic: VSE ... - z/VM - IBM

excessive CPU, storage or disk storage utilization. Deficiencies in the technology of performance instrumentation ofthese servers will be noted. A case study will be presented.Session: L83Title: Managing server (Unix, Linux, NT) Consolidation to zSeriesSpeaker: Barton Robinson, Velocity Software, Inc.Abstract:Mainframes are dead? This presentation will illustrate the process of identifying those servers and applications that canand should be consolidated to s/390 (mainframe). Why? Server consolidation saves money in people costs as shown bymany TCO studies. Server consolidation gives you the opportunity to provide better resource utilization andperformance given certain conditions are met. This session discusses the method of selecting the servers andapplications to be so chosen.Session: L84Title: I/O Tuning, in the VM/LINUX EnvironmentSpeaker: Thomas Beretvas, Beretvas Performance ConsultantsAbstract:Linux is gradually making major inroads into the corporate world. Furthermore, there is a strong trend to consolidatehundreds of Linux servers on a single z/VM (main frame) CPU for ease of maintenance, space and people resourcesaving. A very important consideration in consolidating these servers is hardware resource sharing, thus, specificallyI/O resource sharing. A corollary of resource sharing is potential resource contention. Luckily, the mainframe z/VMenvironment provides excellent facilities of monitoring, and measuring the resource usage and to identify contentionand tuning problems. The analysis narrows down the problem both to the user and the specific I/O bottleneck. It has tobe emphasized that because multiple Linuxes share the I/O resources provided by z/VM, it is possible to identify theI/O bottlenecks by making use of the z/VM measurement capabilities and appropriate reduction facilities. The paperprovides a methodology for identifying Linux environment I/O performance problems in a z/VM environment. It startsby describing I/O measurements such as response time, and its components and their meanings. This is followed by theestablishment of expectations, i.e., what is good and why. The case study illustrates the reduction methods that lead torapid identification of problem areas to analyze the data emphasizing the concept of I/O and Queuing intensities.Session: L85Title: Monitoring & Understanding Performance on Linux for S/390 & zSeriesSpeaker: Joachim Schmalzried, IBMAbstract:Interested in understanding S/390 & zSeries architecture or Linux for S/390 performance concepts? Looking for someimportant performance tools? This session will give you an introduction to Linux for S/390 performance measurement.The first part is about some theoretical background and concepts, the second part is about performance tools. On themainframe, there are normally many operating systems like z/OS, z/VM and Linux running together on the samemachine - a fact which generates interesting situations for performance analysis. The characteristics of z/VM andLPAR need to be understood in order to tune the mainframe as a whole. Even z/OS (V1R2) WLM may decide to adjust