mirror of
https://github.com/sharkdp/hyperfine.git
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110 lines
3.0 KiB
Python
Executable File
110 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python
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"""This program shows parametrized `hyperfine` benchmark results as an
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errorbar plot."""
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import argparse
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import json
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import matplotlib.pyplot as plt
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import sys
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("file", help="JSON file with benchmark results", nargs="+")
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parser.add_argument(
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"--parameter-name",
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metavar="name",
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type=str,
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help="Deprecated; parameter names are now inferred from benchmark files",
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)
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parser.add_argument(
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"--log-x", help="Use a logarithmic x (parameter) axis", action="store_true"
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)
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parser.add_argument(
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"--log-time", help="Use a logarithmic time axis", action="store_true"
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)
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parser.add_argument(
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"--titles", help="Comma-separated list of titles for the plot legend"
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)
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parser.add_argument(
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"-o", "--output", help="Save image to the given filename."
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)
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args = parser.parse_args()
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if args.parameter_name is not None:
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sys.stderr.write(
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"warning: --parameter-name is deprecated; names are inferred from "
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"benchmark results\n"
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)
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def die(msg):
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sys.stderr.write("fatal: %s\n" % (msg,))
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sys.exit(1)
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def extract_parameters(results):
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"""Return `(parameter_name: str, parameter_values: List[float])`."""
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if not results:
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die("no benchmark data to plot")
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(names, values) = zip(*(unique_parameter(b) for b in results))
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names = frozenset(names)
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if len(names) != 1:
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die(
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"benchmarks must all have the same parameter name, but found: %s"
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% sorted(names)
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)
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return (next(iter(names)), list(values))
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def unique_parameter(benchmark):
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"""Return the unique parameter `(name: str, value: float)`, or die."""
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params_dict = benchmark.get("parameters", {})
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if not params_dict:
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die("benchmarks must have exactly one parameter, but found none")
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if len(params_dict) > 1:
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die(
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"benchmarks must have exactly one parameter, but found multiple: %s"
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% sorted(params_dict)
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)
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[(name, value)] = params_dict.items()
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return (name, float(value))
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parameter_name = None
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for filename in args.file:
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with open(filename) as f:
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results = json.load(f)["results"]
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(this_parameter_name, parameter_values) = extract_parameters(results)
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if parameter_name is not None and this_parameter_name != parameter_name:
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die(
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"files must all have the same parameter name, but found %r vs. %r"
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% (parameter_name, this_parameter_name)
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)
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parameter_name = this_parameter_name
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times_mean = [b["mean"] for b in results]
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times_stddev = [b["stddev"] for b in results]
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plt.errorbar(x=parameter_values, y=times_mean, yerr=times_stddev, capsize=2)
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plt.xlabel(parameter_name)
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plt.ylabel("Time [s]")
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if args.log_time:
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plt.yscale("log")
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else:
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plt.ylim(0, None)
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if args.log_x:
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plt.xscale("log")
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if args.titles:
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plt.legend(args.titles.split(","))
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if args.output:
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plt.savefig(args.output)
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else:
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plt.show()
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