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Clustering Benchmark Stories

The code in this directory provides support for clustering and choosing representatives for benchmarks.

Input needed for the clustering methods are:

  1. Benchmark name
  2. List of metrics to use. Clustering will be done once for each metric.
  3. List of platforms to gather data from.
  4. List of test-cases/story-names in the benchmark which should be clustered. If some stories are recognized as outliers, they can be removed from this list. The testcases can be provided as a story per line text file.
  5. Maximum number of clusters. The actual number of clusters may be less than this number, as clusters with only one member are not presented as a cluster.
  6. How many days of data history to be used for clustering

Examples of creating clusters:

python ./tools/perf/experimental/story_clustering/gather_historical_records_and_cluster_stories.py \
rendering.desktop \
--metrics frame_times thread_total_all_cpu_time_per_frame \
--platforms ChromiumPerf:mac-10_13_laptop_high_end-perf ChromiumPerf:mac-10_12_laptop_low_end-perf \
--testcases-path //tmp/story_clustering/rendering.desktop/test_cases.txt \
--days=100 \
--normalize
python ./tools/perf/experimental/story_clustering/gather_historical_records_and_cluster_stories.py \
rendering.desktop \
--metrics frame_times thread_total_all_cpu_time_per_frame \
--platforms 'ChromiumPerf:Win 7 Nvidia GPU Perf' 'ChromiumPerf:Win 7 Perf' ChromiumPerf:win-10-perf \
--testcases-path //tmp/story_clustering/rendering.desktop/test_cases.txt \
--days=100 \
--normalize
python ./tools/perf/experimental/story_clustering/gather_historical_records_and_cluster_stories.py \
rendering.mobile \
--metrics frame_times thread_total_all_cpu_time_per_frame \
--platforms 'ChromiumPerf:Android Nexus5 Perf' 'ChromiumPerf:Android Nexus5X WebView Perf' \
'ChromiumPerf:Android Nexus6 WebView Perf' \
--testcases-path //tmp/story_clustering/rendering.mobile/test_cases.txt \
--days=100 \
--normalize

Results of the clustering will be written in clusters.json file, located in the output directory given to the script

Method explanation