Hi all, This is Florin Papa from the Server Languages Optimizations Team at Intel Corporation. The patch submitted here solves a crash occurring on Python 2.7 after running pybench from perf.py (python perf.py -r -b pybench base_python modified_python). The error appears when trying to display the results of the run because the PyBenchBenchmarkResult class does not include the attribute "always_display". Here is the error message received: File "../benchmarks/perf.py", line 2574, in main if result.always_display: AttributeError: 'PyBenchBenchmarkResult' object has no attribute 'always_display' To apply the patch please follow these steps: hg clone https://hg.python.org/benchmarks cd benchmarks/ copy fix_pybench_results.patch to the current directory hg import --no-commit fix_pybench_results.patch Thank you, Florin Papa