| # SampleVariance |
| |
| A Go program for analyzing sample variance of nanobench results stored in Google |
| Cloud Storage (GCS). The nanobench program usually stores 10 samples from each |
| run of a benchmark, and this tool allows looking at those samples across a wide |
| number of runs stored on GCS. |
| |
| ## Prerequisites |
| |
| - Read-only access to the GCS bucket. |
| |
| ## Running |
| |
| By default this will run over all JSON files from yesterday: |
| |
| $ bazel run :samplevariance -- > top100.csv |
| |
| If you want to specify the files, then pass in a GCS path via the --prefix flag: |
| |
| $ bazel run :samplevariance -- --prefix=gs://skia-perf/nano-json-v1/2021/05/23/02/ |
| |
| You can also change the tests being considered using the --filter flag: |
| |
| $ bazel run :samplevariance -- --filter=source_type=bench&sub_result=min_ms |
| |
| See `bazel run :samplevariance -- --help` for all the options. |
