1 // Copyright (C) 2022 The Android Open Source Project 2 // 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 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 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 15 #include <benchmark/benchmark.h> 16 17 #include <algorithm> 18 #include <string> 19 20 #include "perfetto/ext/base/file_utils.h" 21 #include "perfetto/ext/protozero/proto_ring_buffer.h" 22 #include "src/base/test/utils.h" 23 BM_ProtoRingBufferReadLargeChunks(benchmark::State & state)24static void BM_ProtoRingBufferReadLargeChunks(benchmark::State& state) { 25 std::string trace_data; 26 static const char kTestTrace[] = "test/data/example_android_trace_30s.pb"; 27 perfetto::base::ReadFile(perfetto::base::GetTestDataPath(kTestTrace), 28 &trace_data); 29 PERFETTO_CHECK(!trace_data.empty()); 30 31 size_t total_packet_size = 0; 32 protozero::ProtoRingBuffer buffer; 33 for (auto _ : state) { 34 protozero::ProtoRingBuffer::Message msg = buffer.ReadMessage(); 35 if (msg.valid()) { 36 total_packet_size += msg.len; 37 } else { 38 state.PauseTiming(); 39 buffer.Append(trace_data.data(), trace_data.size()); 40 state.ResumeTiming(); 41 } 42 } 43 benchmark::DoNotOptimize(total_packet_size); 44 } 45 46 BENCHMARK(BM_ProtoRingBufferReadLargeChunks); 47 BM_ProtoRingBufferRead(benchmark::State & state)48static void BM_ProtoRingBufferRead(benchmark::State& state) { 49 std::string trace_data; 50 static const char kTestTrace[] = "test/data/example_android_trace_30s.pb"; 51 perfetto::base::ReadFile(perfetto::base::GetTestDataPath(kTestTrace), 52 &trace_data); 53 PERFETTO_CHECK(!trace_data.empty()); 54 55 constexpr size_t kChunkSize = 1024 * 1024 * 3; 56 57 size_t offset = 0; 58 size_t total_packet_size = 0; 59 protozero::ProtoRingBuffer buffer; 60 for (auto _ : state) { 61 protozero::ProtoRingBuffer::Message msg = buffer.ReadMessage(); 62 if (msg.valid()) { 63 total_packet_size += msg.len; 64 } else { 65 state.PauseTiming(); 66 size_t sz = std::min(kChunkSize, trace_data.size() - offset); 67 buffer.Append(trace_data.data() + offset, sz); 68 offset = (offset + sz) % trace_data.size(); 69 state.ResumeTiming(); 70 } 71 } 72 benchmark::DoNotOptimize(total_packet_size); 73 } 74 75 BENCHMARK(BM_ProtoRingBufferRead); 76