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OpenResty XRay Aug 20, 2026

OpenResty XRay Updated Aug 20, 2026 7 mins read

Erlang High CPU Usage: PCRE Regex Bottleneck Traced with Flame Graphs

tutorial openresty-xray erlang cpu profiling regex flame-graph beam-vm

Observing 200%+ CPU in an Erlang Process
Profiling Erlang CPU Usage with OpenResty XRay
C-Level Analysis: erts_pcre_exec and PCRE Backtracking
Why PCRE Regex Backtracking Is Expensive in the BEAM VM
Automatic Monitoring and Reports
FAQ: Erlang High CPU Usage
What is OpenResty XRay

Observing 200%+ CPU in an Erlang Process
Profiling Erlang CPU Usage with OpenResty XRay
C-Level Analysis: erts_pcre_exec and PCRE Backtracking
Why PCRE Regex Backtracking Is Expensive in the BEAM VM
Automatic Monitoring and Reports
FAQ: Erlang High CPU Usage
What is OpenResty XRay

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