性能評価 A Framework for Performance Evaluation Based on Event Tracing

概要

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A framework is described for establishing a formulated method of performance evaluation based on event tracing. It consists of abstractions representing a system, its behavior, and the events to be measured. It also includes formulations of performance measures and of algorithms for obtaining them from an event trace. Measures include not only such usual ones as throughput, response time, and resource utilization, but also those describing such process interactions as process waiting time and semi-busy-waiting. The framework has been applied to the performance evaluation of an Apache HTTP server running on Linux 2.2.14 and 2.3.41 and executing the SPECweb96 benchmark program. This case study has clarified the differences between the two versions of Linux, including differences in CPU usage, global-kernel-lock usage, processing time, and process-switch frequency. The case study also indicates that Linux 2.2.14 had a performance bottleneck other than physical resources, thus the measurement of CPU usage alone is not enough ; we also need to consider object interactions including interprocess communications, at least so far as Apache HTTP servers are concerned.
一般社団法人情報処理学会の論文
2001-01-15