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The Tracer Files: Cracking the Case of Performance Impact in Tracing Linux File I/O for I/O-Intensive Applications

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Autor(es):
do Nascimento, Rodrigo Pereira ; Vel Lejbman, Alfredo Goldman
Número total de Autores: 2
Tipo de documento: Artigo Científico
Fonte: 2024 INTERNATIONAL SYMPOSIUM ON COMPUTER ARCHITECTURE AND HIGH PERFORMANCE COMPUTING WORKSHOPS, SBAC-PADW; v. N/A, p. 8-pg., 2024-01-01.
Resumo

Tracing file I/O operations in Linux is critical for understanding and optimizing application performance, particularly in I/O-intensive environments. However, the choice of tracing tool can dramatically impact the application throughput. This paper investigates the performance overhead associated with two widely used tracing tools - strace and bpftrace - when applied to file I/O operations. Through empirical evaluation using a controlled benchmark over 100 epochs, we compare the throughput distributions of training a machine learning model under both tools against a baseline without tracing. The results reveal that strace introduces significant performance degradation, reducing throughput by 17%. In contrast, bpftrace, leveraging the efficiency of BPF, reduces the throughput by only 1% compared to the baseline, while maintaining consistent performance across trials. (AU)

Processo FAPESP: 19/26702-8 - Tendências em computação de alto desempenho, do gerenciamento de recursos a novas arquiteturas de computadores
Beneficiário:Alfredo Goldman vel Lejbman
Modalidade de apoio: Auxílio à Pesquisa - Temático