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-rwxr-xr-xlibcxx/utils/compare-benchmarks15
1 files changed, 11 insertions, 4 deletions
diff --git a/libcxx/utils/compare-benchmarks b/libcxx/utils/compare-benchmarks
index 988e243..d165c73 100755
--- a/libcxx/utils/compare-benchmarks
+++ b/libcxx/utils/compare-benchmarks
@@ -65,9 +65,16 @@ def plain_text_comparison(data, metric, baseline_name=None, candidate_name=None)
"""
data = data.replace(numpy.nan, None) # avoid NaNs in tabulate output
headers = ['Benchmark', baseline_name, candidate_name, 'Difference', '% Difference']
- fmt = (None, '.2f', '.2f', '.2f', '.2f')
- table = data[['benchmark', f'{metric}_0', f'{metric}_1', 'difference', 'percent']].set_index('benchmark')
- return tabulate.tabulate(table, headers=headers, floatfmt=fmt, numalign='right')
+ fmt = (None, '.2f', '.2f', '.2f', '.2%')
+ table = data[['benchmark', f'{metric}_0', f'{metric}_1', 'difference', 'percent']]
+
+ # Compute the geomean and report on their difference
+ geomean_0 = statistics.geometric_mean(data[f'{metric}_0'].dropna())
+ geomean_1 = statistics.geometric_mean(data[f'{metric}_1'].dropna())
+ geomean_row = ['Geomean', geomean_0, geomean_1, (geomean_1 - geomean_0), (geomean_1 - geomean_0) / geomean_0]
+ table.loc[table.index.max()] = geomean_row
+
+ return tabulate.tabulate(table.set_index('benchmark'), headers=headers, floatfmt=fmt, numalign='right')
def create_chart(data, metric, subtitle=None, series_names=None):
"""
@@ -154,7 +161,7 @@ def main(argv):
# If we have exactly two data sets, compute additional info in new columns
if len(lnt_inputs) == 2:
data['difference'] = data[f'{args.metric}_1'] - data[f'{args.metric}_0']
- data['percent'] = 100 * (data['difference'] / data[f'{args.metric}_0'])
+ data['percent'] = data['difference'] / data[f'{args.metric}_0']
if args.filter is not None:
keeplist = [b for b in data['benchmark'] if re.search(args.filter, b) is not None]