testing/gtest/bench.py

   1 #!/usr/bin/env python3
   2
   3 import sys
   4 import subprocess
   5 import json
   6 import statistics
   7
   8 proc = subprocess.Popen(["./mach", "gtest", sys.argv[1]], stdout=subprocess.PIPE)
   9 for line in proc.stdout:
  10     if line.startswith(b"PERFHERDER_DATA:"):
  11         data = json.loads(line[len("PERFHERDER_DATA:"):].decode("utf8"))
  12         for suite in data["suites"]:
  13             for subtest in suite["subtests"]:
  14                 print("%4d.%03d ± %6s ms    %s.%s" % (
  15                     subtest["value"] / 1000.,
  16                     subtest["value"] % 1000,
  17                     "%.3f" % (statistics.stdev(subtest["replicates"]) / 1000),
  18                     suite["name"],
  19                     subtest["name"],
  20                 ))