Title:
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Measuring operating system overhead on CMT processors
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Author:
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Radojkovic, Petar; Cakarevic, Vladimir; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Gioiosa, Roberto; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions |
Abstract:
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Numerous studies have shown that Operating System (OS) noise is one of the reasons for significant performance degradation in clustered architectures. Although many studies examine the OS noise for High Performance Computing (HPC), especially in multi-processor/core systems, most of them focus on 2- or 4-core systems. In this paper, we analyze the major sources of OS noise on a massive multithreading processor, the Sun UltraSPARC T1, running Linux and Solaris. Since a real system is too complex
to analyze, we compare those results with a low-overhead runtime environment: the Netra Data Plane Software Suite (Netra DPS). Our results show that the overhead introduced by the OS timer interrupt in Linux and Solaris depends on the particular core and hardware context in which the application is running. This overhead is up to 30% when the application is executed on the same hardware context of the timer interrupt handler and up to 10% when the application and the timer interrupt handler run on different contexts but on the same core. We detect no overhead when the benchmark and the timer interrupt
handler run on different cores of the processor. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Sistemes operatius -Simultaneous multithreading processors -Compilers (Computer programs) -High performance computing -CMT processor -Netra DPS -Operating system overhead -Sistemes operatius (Ordinadors) -Compiladors (Programes d'ordinador) -Multiprocessadors |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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IEEE Computer Society Publications
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