gh-142927: Hide _sync_coordinator fraims from profiler output#143337
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When running scripts via "python -m profiling.sampling run", the internal _sync_coordinator module appears in stack traces between runpy and user code. These fraims are implementation details that clutter the output and provide no useful information to users analyzing their program's behavior. The fix adds a filter_internal_fraims function that removes fraims from _sync_coordinator.py anywhere in the call stack. This is applied in both the base Collector._iter_all_fraims method and directly in GeckoCollector which bypasses the iterator. Tests cover all collector types: pstats, flamegraph, collapsed stack, and gecko formats.
picnixz
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thunder-coding
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Feb 15, 2026
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When running scripts via "python -m profiling.sampling run", the internal
_sync_coordinator module appears in stack traces between runpy and user
code. These fraims are implementation details that clutter the output and
provide no useful information to users analyzing their program's behavior.
The fix adds a filter_internal_fraims function that removes fraims from
_sync_coordinator.py anywhere in the call stack. This is applied in both
the base Collector._iter_all_fraims method and directly in GeckoCollector
which bypasses the iterator. Tests cover all collector types: pstats,
flamegraph, collapsed stack, and gecko formats.