]>
git.proxmox.com Git - ceph.git/blob - ceph/src/jaegertracing/opentelemetry-cpp/third_party/benchmark/bindings/python/google_benchmark/example.py
1 # Copyright 2020 Google Inc. All rights reserved.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14 """Example of Python using C++ benchmark framework.
16 To run this example, you must first install the `google_benchmark` Python package.
18 To install using `setup.py`, download and extract the `google_benchmark` source.
19 In the extracted directory, execute:
20 python setup.py install
26 import google_benchmark
as benchmark
27 from google_benchmark
import Counter
37 def sum_million(state
):
42 def pause_timing(state
):
43 """Pause timing every iteration."""
45 # Construct a list of random ints every iteration without timing it
47 random_list
= [random
.randint(0, 100) for _
in range(100)]
49 # Time the in place sorting algorithm
55 if True: # Test some predicate here.
56 state
.skip_with_error("some error")
57 return # NOTE: You must explicitly return, or benchmark will continue.
59 ... # Benchmark code would be here.
63 def manual_timing(state
):
65 # Manually count Python CPU time
66 start
= time
.perf_counter() # perf_counter_ns() in Python 3.7+
67 # Something to benchmark
69 end
= time
.perf_counter()
70 state
.set_iteration_time(end
- start
)
74 def custom_counters(state
):
75 """Collect cutom metric using benchmark.Counter."""
78 # Benchmark some code here
80 # Collect some custom metric named foo
83 # Automatic Counter from numbers.
84 state
.counters
["foo"] = num_foo
85 # Set a counter as a rate.
86 state
.counters
["foo_rate"] = Counter(num_foo
, Counter
.kIsRate
)
87 # Set a counter as an inverse of rate.
88 state
.counters
["foo_inv_rate"] = Counter(num_foo
, Counter
.kIsRate | Counter
.kInvert
)
89 # Set a counter as a thread-average quantity.
90 state
.counters
["foo_avg"] = Counter(num_foo
, Counter
.kAvgThreads
)
91 # There's also a combined flag:
92 state
.counters
["foo_avg_rate"] = Counter(num_foo
, Counter
.kAvgThreadsRate
)
96 @benchmark.option
.measure_process_cpu_time()
97 @benchmark.option
.use_real_time()
98 def with_options(state
):
100 sum(range(1_000_000))
103 @benchmark.register(name
="sum_million_microseconds")
104 @benchmark.option
.unit(benchmark
.kMicrosecond
)
105 def with_options(state
):
107 sum(range(1_000_000))
111 @benchmark.option
.arg(100)
112 @benchmark.option
.arg(1000)
113 def passing_argument(state
):
115 sum(range(state
.range(0)))
119 @benchmark.option
.range(8, limit
=8 << 10)
120 def using_range(state
):
122 sum(range(state
.range(0)))
126 @benchmark.option
.range_multiplier(2)
127 @benchmark.option
.range(1 << 10, 1 << 18)
128 @benchmark.option
.complexity(benchmark
.oN
)
129 def computing_complexity(state
):
131 sum(range(state
.range(0)))
132 state
.complexity_n
= state
.range(0)
135 if __name__
== "__main__":