[BOLT][Utils] Add nfc-stat-parser.py #71979
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Add a utility to parse output from llvm-bolt-wrapper script and detect individual and aggregate time/memory swings. The wrapper reports wall time and peak RSS for each BOLT invocation. Exit code: The utility exits with non-zero exit code if any individual test has time or memory swing larger than `threshold_single` (default 10%), or the aggregate (geometric mean) swing larger than `threshold_agg` (default 5%). Short tests where BOLT wall time is less than `check_longer_than` seconds (default 0.5s) are excluded from threshold calculation. Output: The script prints test results exceeding the individual threshold, and geomean values if it exceeds aggregate results. In `--verbose` mode all individual results are printed (short time results are marked with '?'). Example usage: ``` $ cd ~/llvm-build # build folder where NFC testing was invoked $ python3 ~/llvm-project/bolt/utils/nfc-stat-parser.py \ --check_longer_than 0.1 `find -name timing.log` ./tools/bolt/test/runtime/X86/exceptions-pic.test/ -88.46% -0.13% Geomean -19.78% +0.37% $ echo $? 1 ```
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Add a utility to parse output from llvm-bolt-wrapper script and detect individual and aggregate time/memory swings. The wrapper reports wall time and peak RSS for each BOLT invocation. Exit code: The utility exits with non-zero exit code if any individual test has time or memory swing larger than `threshold_single` (default 10%), or the aggregate (geometric mean) swing larger than `threshold_agg` (default 5%). Short tests where BOLT wall time is less than `check_longer_than` seconds (default 0.5s) are excluded from threshold calculation. Output: The script prints test results exceeding the individual threshold, and geomean values if it exceeds aggregate results. In `--verbose` mode all individual results are printed (short time results are marked with '?'). Example usage: ``` $ cd ~/llvm-build # build folder where NFC testing was invoked $ python3 ~/llvm-project/bolt/utils/nfc-stat-parser.py \ --check_longer_than 0.1 `find -name timing.log` ./tools/bolt/test/runtime/X86/exceptions-pic.test/ -88.46% -0.13% Geomean -19.78% +0.37% $ echo $? 1 ```
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Add a utility to parse output from llvm-bolt-wrapper script and
detect individual and aggregate time/memory swings. The wrapper reports
wall time and peak RSS for each BOLT invocation.
Exit code:
The utility exits with non-zero exit code if any individual test has
time or memory swing larger than
threshold_single(default 10%), orthe aggregate (geometric mean) swing larger than
threshold_agg(default 5%). Short tests where BOLT wall time is less than
check_longer_thanseconds (default 0.5s) are excluded from thresholdcalculation.
Output:
The script prints test results exceeding the individual threshold, and
geomean values if it exceeds aggregate results. In
--verbosemode allindividual results are printed (short time results are marked with '?').
Example usage: