Set RLIMIT_CORE=1 instead of =0 on Linux.
#737
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The Linux kernel special-cases `RLIMIT_CORE=1` to mean "no, really, don't write a core file even if it'd be to a pipe." Which sounds like a niche use case but Ubuntu 24 by default enables Apport for crash reporting and Apport works by setting the core pattern to write to a pipe. This resolves a performance issue on Linux where exit tests would always take almost exactly one second instead of a few microseconds (unless you explicitly turned off Apport.)
grynspan
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grynspan
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stmontgomery,
dennisweissmann,
briancroom,
SeanROlszewski and
suzannaratcliff
as code owners
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@swift-ci test |
stmontgomery
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Sep 27, 2024
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@swift-ci test Windows |
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The Linux kernel special-cases
RLIMIT_CORE=1to mean "no, really, don't write a core file even if it'd be to a pipe." Which sounds like a niche use case but Ubuntu 24 by default enables Apport for crash reporting and Apport works by setting the core pattern to write to a pipe.This resolves a performance issue on Linux where exit tests would always take almost exactly one second instead of a few microseconds (unless you explicitly turned off Apport.
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