CI: osx: run benchmarks

ci/travis/osx/script.sh

@@ -27,3 +27,12 @@ DYLD_LIBRARY_PATH=$PWD/build PYTHONPATH=$PWD/build/swig/python python3 -c "from
 
 # Run all the Python autotests
 (cd build && ctest -V -R autotest -j${NPROC})
+
+# Use time.process_time for more reliability on VMs
+# dist=no is needed because pytest-benchmark doesn't like other values of dist
+# and in conftest.py/pytest.ini we set by default --dist=loadgroup
+BENCHMARK_OPTIONS=(
+        "--dist=no" \
+        "--benchmark-timer=time.process_time" \
+)
+(cd build && python3 -m pytest autotest/benchmark "${BENCHMARK_OPTIONS[@]}" --capture=no -ra -vv)