Add C++ sampling profiler support with FANTOM_PROFILE_CPP#55735
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Add C++ sampling profiler support with FANTOM_PROFILE_CPP#55735sammy-SC wants to merge 1 commit intofacebook:mainfrom
sammy-SC wants to merge 1 commit intofacebook:mainfrom
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Summary: Add support for profiling C++ code in Fantom tests using Linux `perf`. When `FANTOM_PROFILE_CPP=1` is set, the fantom_tester binary is wrapped with `perf record` to capture sampling profiler data with DWARF call graphs. Usage: ``` FANTOM_PROFILE_CPP=1 yarn fantom --benchmarks --testPathPattern="View-benchmark" ``` Output is saved to `.out/cpp-traces/perf-<timestamp>.data` and can be analyzed with: ``` perf report -i .out/cpp-traces/perf-<timestamp>.data ``` Differential Revision: D92155573
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Summary:
Add support for profiling C++ code in Fantom tests using Linux
perf.When
FANTOM_PROFILE_CPP=1is set, the fantom_tester binary is wrapped withperf recordto capture sampling profiler data with DWARF call graphs.Usage:
Output is saved to
.out/cpp-traces/perf-<timestamp>.dataand can be analyzed with:Differential Revision: D92155573