Monitoring and measurement of computer network performance

Abstract

Regardless of fast performance improvements in the field of network technologies and their pervasiveness, today’s computer-demanding and service-oriented applications require efficient management of networks. Besides monitoring collision, broadcast and errors, utilization measurement of a local commutated network was carried out by means of a software tool. Measurement was carried out at two different levels of artificially generated continuous workload and by varying workload caused by intensive use of network resources. In our experiments, the monitored network showed that it is resistant to collisions and errors, but also sensitive to workload dynamics characterized by utilization changes. These changes show certain regularity and periodicity and can be considered as a good behavior pattern of a network. The approach proposed enables prediction of accessibility of computer resources by their engagement in complex distributed computer environments.Bez obzira na brzo poboljšanje performansi mrežnih tehnologija i njihove prodornosti, današnji računalno zahtjevni i uslugama usmjereni primjenski programi, zahtijevaju učinkovito upravljanje mrežom. Uz nadzor srazova, prijenosa i pogrešaka, programskim alatom obavljeno je i mjerenje korisnosti. Mjerenje je provedeno na dvije različite razine umjetno generiranog opterećenja, te promjenjivog opterećenja izazvanog intenzivnom uporabom mrežnih resursa. U provedenim eksperimentima, nadzirana mreža pokazala je otpornost na srazove i pogreške, ali i osjetljivost na dinamičnost opterećenja, odnosno promjene korisnosti. Takve promjene pokazuju određenu pravilnost i periodnost, te se mogu smatrati dobrim uzorkom ponašanja mreže. Predloženi pristup omogućava predviđanje dostupnosti računalnih resursa pri njihovom uključivanju u složene raspodijeljene računalne okoline

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