Function check_thresholds

ci/perf/compile_perf.py:614–656

Check if compilation metrics exceed thresholds. This function checks ONLY the aggregate/total compilation time against the configured threshold. Individual header times are not checked as they can vary significantly between compilations due to caching and other factors. The agg

(analyzer: CompilePerfAnalyzer, thresholds_file: Path)

def check_thresholds(analyzer: CompilePerfAnalyzer, thresholds_file: Path) -> bool:
    """
    Check if compilation metrics exceed thresholds.

    This function checks ONLY the aggregate/total compilation time against the
    configured threshold. Individual header times are not checked as they can
    vary significantly between compilations due to caching and other factors.
    The aggregate time is what matters for real-world user experience.

    Returns True if all checks pass, False otherwise.
    """
    if not thresholds_file.exists():
        print(
            f"Warning: Thresholds file not found at {thresholds_file}", file=sys.stderr
        )
        return True

    with open(thresholds_file, "r") as f:
        thresholds = json.load(f)

    total_time = analyzer.get_total_time()

    errors: list[str] = []

    # Check total compile time (this is the only check that matters)
    max_total = thresholds.get("total_compile_time_ms", 2000)
    if total_time > max_total:
        errors.append(
            f"Total compile time {total_time:.1f}ms exceeds threshold {max_total}ms"
        )

    # Print results
    if errors:
        print("\n❌ ERRORS:", file=sys.stderr)
        for error in errors:
            print(f"  - {error}", file=sys.stderr)
    else:
        print(
            f"\n✓ All threshold checks passed - Total compile time: {total_time:.1f}ms (threshold: {max_total}ms)",
            file=sys.stderr,
        )

    return len(errors) == 0


def main() -> None: