Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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79 lines
2.2 KiB
79 lines
2.2 KiB
#!/usr/bin/env python3 |
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"""Benchmarks the current working directory against a given baseline. |
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This script benchmarks both size and speed. Sample output: |
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""" |
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import contextlib |
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import json |
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import os |
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import re |
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import subprocess |
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import sys |
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import tempfile |
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@contextlib.contextmanager |
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def GitWorktree(commit): |
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tmpdir = tempfile.mkdtemp() |
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subprocess.run(['git', 'worktree', 'add', '-q', '-d', tmpdir, commit], check=True) |
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cwd = os.getcwd() |
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os.chdir(tmpdir) |
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try: |
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yield tmpdir |
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finally: |
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os.chdir(cwd) |
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subprocess.run(['git', 'worktree', 'remove', tmpdir], check=True) |
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def Run(cmd): |
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subprocess.check_call(cmd, shell=True) |
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def Benchmark(outbase, runs=12): |
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tmpfile = "/tmp/bench-output.json" |
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Run("rm -rf {}".format(tmpfile)) |
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#Run("CC=clang bazel test :all") |
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Run("CC=clang bazel build -c opt :benchmark") |
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Run("./bazel-bin/benchmark --benchmark_out_format=json --benchmark_out={} --benchmark_repetitions={}".format(tmpfile, runs)) |
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Run("CC=clang bazel build -c opt --copt=-g :conformance_upb") |
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Run("cp -f bazel-bin/conformance_upb {}.bin".format(outbase)) |
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with open(tmpfile) as f: |
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bench_json = json.load(f) |
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# Translate into the format expected by benchstat. |
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with open(outbase + ".txt", "w") as f: |
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for run in bench_json["benchmarks"]: |
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name = re.sub(r'^BM_', 'Benchmark', run["name"]) |
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if name.endswith("_mean") or name.endswith("_median") or name.endswith("_stddev"): |
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continue |
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values = (name, run["iterations"], run["cpu_time"]) |
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print("{} {} {} ns/op".format(*values), file=f) |
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baseline = "master" |
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if len(sys.argv) > 1: |
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baseline = sys.argv[1] |
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# Quickly verify that the baseline exists. |
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with GitWorktree(baseline): |
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pass |
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# Benchmark our current directory first, since it's more likely to be broken. |
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Benchmark("/tmp/new") |
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# Benchmark the baseline. |
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with GitWorktree(baseline): |
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Benchmark("/tmp/old") |
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print() |
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print() |
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Run("~/go/bin/benchstat /tmp/old.txt /tmp/new.txt") |
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print() |
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print() |
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Run("objcopy --strip-debug /tmp/old.bin /tmp/old.bin.stripped") |
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Run("objcopy --strip-debug /tmp/new.bin /tmp/new.bin.stripped") |
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Run("~/code/bloaty/bloaty /tmp/new.bin.stripped -- /tmp/old.bin.stripped --debug-file=/tmp/old.bin --debug-file=/tmp/new.bin -d compileunits,symbols")
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