| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Licensed 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. |
| */ |
| |
| // Author: jmarantz@google.com (Joshua Marantz) |
| |
| #include "base/logging.h" |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/benchmark.h" |
| #include "pagespeed/kernel/base/google_message_handler.h" |
| #include "pagespeed/kernel/base/gtest.h" |
| #include "pagespeed/kernel/base/stdio_file_system.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/kernel/base/string_util.h" |
| #include "pagespeed/kernel/base/string_writer.h" |
| |
| // Running the speed test: |
| // src/out/Release/mod_pagespeed_speed_test .File |
| // BM_100kWholeFile 100000 18845 ns/op |
| // BM_100kStreamingFile 50000 70181 ns/op |
| // BM_1MWholeFile 10000 122070 ns/op |
| // BM_1MStreamingFile 2000 760416 ns/op |
| // |
| |
| namespace net_instaweb { |
| |
| namespace { |
| |
| class FSTester { |
| public: |
| explicit FSTester(int size) { |
| StopBenchmarkTiming(); |
| GoogleString str; |
| str.append(size, 'a'); |
| filename_ = StrCat(GTestTempDir(), "large_file.txt"); |
| file_system_.WriteFile(filename_.c_str(), str, &handler_); |
| } |
| |
| ~FSTester() { |
| file_system_.RemoveFile(filename_.c_str(), &handler_); |
| StartBenchmarkTiming(); |
| } |
| |
| void ReadWholeFile(int iters) { |
| StartBenchmarkTiming(); |
| for (int i = 0; i < iters; ++i) { |
| GoogleString buf; |
| CHECK(file_system_.ReadFile(filename_.c_str(), &buf, &handler_)); |
| } |
| StopBenchmarkTiming(); |
| } |
| |
| void StreamingReadFile(int iters) { |
| StartBenchmarkTiming(); |
| for (int i = 0; i < iters; ++i) { |
| GoogleString buf; |
| StringWriter writer(&buf); |
| CHECK(file_system_.ReadFile(filename_.c_str(), &writer, &handler_)); |
| } |
| StopBenchmarkTiming(); |
| } |
| |
| private: |
| StdioFileSystem file_system_; |
| GoogleString filename_; |
| GoogleMessageHandler handler_; |
| }; |
| |
| static void BM_100kWholeFile(int iters) { |
| FSTester fs_tester(100000); |
| fs_tester.ReadWholeFile(iters); |
| } |
| BENCHMARK(BM_100kWholeFile); |
| |
| static void BM_100kStreamingFile(int iters) { |
| FSTester fs_tester(100000); |
| fs_tester.StreamingReadFile(iters); |
| } |
| BENCHMARK(BM_100kStreamingFile); |
| |
| static void BM_1MWholeFile(int iters) { |
| FSTester fs_tester(1000000); |
| fs_tester.ReadWholeFile(iters); |
| } |
| BENCHMARK(BM_1MWholeFile); |
| |
| static void BM_1MStreamingFile(int iters) { |
| FSTester fs_tester(1000000); |
| fs_tester.StreamingReadFile(iters); |
| } |
| BENCHMARK(BM_1MStreamingFile); |
| |
| } // namespace |
| |
| } // namespace net_instaweb |