By Karama Kanoun, Lisa Spainhower
A accomplished number of benchmarks for measuring dependability in hardware-software systemsAs computers became extra complicated and mission-critical, it truly is relevant for platforms engineers and researchers to have metrics for a system's dependability, reliability, availability, and serviceability. Dependability benchmarks are invaluable for directing improvement efforts for approach companies, acquisition offerings of process buyers, and reviews of latest options by means of researchers in academia and industry.This publication gathers jointly all dependability benchmarks built to this point via and academia and explains a few of the rules and ideas of dependability benchmarking. It collects the specialist wisdom of DBench, a study undertaking funded by means of the ecu Union, and the IFIP distinctive curiosity crew on Dependability Benchmarking, to make clear this crucial region. It additionally offers a wide landscape of examples and suggestions for outlining dependability benchmarks.Dependability Benchmarking for computers comprises contributions from a reputable mixture of commercial and educational assets: IBM, Intel, Microsoft, solar Microsystems, serious software program, Carnegie Mellon collage, LAAS-CNRS, Technical college of Valencia, collage of Coimbra, and college of Illinois. it's a useful source for engineers, researchers, process proprietors, procedure dealers, machine experts, and process integrators.
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Extra info for Dependability Benchmarking for Computer Systems (Practitioners)
Deadlock on DBMS server This disturbance scenario represents the case in which a deadlock involving one or more applications leaves a significant number of resources (rows or tables) in the DBMS locked, making them inaccessible to all applications. Any queries on the DBMS that require these locked resources will not complete successfully. Memory leak in a user application This disturbance scenario represents the case in which a user application causes a memory leak that exhausts all available memory on the system.
INTRODUCTION Benchmarking computer systems is an exercise in measurement, focused traditionally on providing a metric that describes performance in some meaningful way, either by the performance of a particular subsystem (processor, I/O) [SPEC] or by the system as a whole (TPC benchmarks) [TPC]. Such benchmarks are intended to provide a relatively objective set of data that can be used to compare systems from different vendors. Performance, however, is not the only attribute of a computer system that is evaluated in the selection process.
A possible solution to this problem is to create classes of SUTs based on throughput or on different scaling factors in the workload, such as number of users and number of products, and to compare only results from within a single class. A third factor complicating the comparison of results is the absence of a cost component in the metric, which makes it possible for an operator to artificially inflate a resiliency score by overprovisioning hardware and software components in the SUT. Currently, we require only that a benchmark result include a list of hardware and software components used to achieve that result.