| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "benchmark/benchmark.h" |
| |
| #include "arrow/testing/gtest_util.h" |
| #include "arrow/testing/random.h" |
| #include "arrow/util/tdigest.h" |
| |
| namespace arrow { |
| namespace util { |
| |
| static constexpr uint32_t kDelta = 100; |
| static constexpr uint32_t kBufferSize = 500; |
| |
| static void BenchmarkTDigest(benchmark::State& state) { |
| const size_t items = state.range(0); |
| std::vector<double> values; |
| random_real(items, 0x11223344, -12345678.0, 12345678.0, &values); |
| |
| for (auto _ : state) { |
| arrow::internal::TDigest td(kDelta, kBufferSize); |
| for (double value : values) { |
| td.Add(value); |
| } |
| benchmark::DoNotOptimize(td.Quantile(0)); |
| } |
| state.SetItemsProcessed(state.iterations() * items); |
| } |
| |
| BENCHMARK(BenchmarkTDigest)->Arg(1 << 12)->Arg(1 << 16)->Arg(1 << 20); |
| |
| } // namespace util |
| } // namespace arrow |