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arXiv · 1909.03111

Lightweight Record-and-Replay for Intermittent Tests Failures

Omar S Navarro Leija·Alan Jeffrey
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Abstract

In this paper we present lightweight record-and-replay (RR). In contrast to traditional "fully deterministic" RR solutions, lightweight RR focuses on handling nondeterminism arising from thread communication for programs with concurrent, message-passing architectures. By decreasing nondeterminism in programs, lightweight RR decreases the number of intermittent failures in program's test suites. We evaluated the effectiveness of lightweight RR on Servo, a highly concurrent web browser. Our evaluation shows lightweight RR is effective at greatly reducing intermittent failures for some tests, but not others. Lightweight RR performance overhead remains a work in progress, but log sizes are quite small. We believe with further work lightweight RR could prove useful for lowering nondeterminism in programs at a negligible performance overhead.

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Omar S Navarro Leija, Alan Jeffrey. 2019-09-06. Lightweight Record-and-Replay for Intermittent Tests Failures. https://arxiv.org/abs/1909.03111

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