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Diffstat (limited to 'test/perf/linux/seqwrite_benchmark.cc')
-rw-r--r-- | test/perf/linux/seqwrite_benchmark.cc | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/test/perf/linux/seqwrite_benchmark.cc b/test/perf/linux/seqwrite_benchmark.cc deleted file mode 100644 index af49e4477..000000000 --- a/test/perf/linux/seqwrite_benchmark.cc +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright 2020 The gVisor Authors. -// -// 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. - -#include <fcntl.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "benchmark/benchmark.h" -#include "test/util/logging.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// The maximum file size of the test file, when writes get beyond this point -// they wrap around. This should be large enough to blow away caches. -const uint64_t kMaxFile = 1 << 30; - -// Perform writes of various sizes sequentially to one file. Wraps around if it -// goes above a certain maximum file size. -void BM_SeqWrite(benchmark::State& state) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_WRONLY)); - - const int size = state.range(0); - std::vector<char> buf(size); - RandomizeBuffer(buf.data(), buf.size()); - - // Start writes at offset 0. - uint64_t offset = 0; - for (auto _ : state) { - TEST_CHECK(PwriteFd(fd.get(), buf.data(), buf.size(), offset) == - buf.size()); - offset += buf.size(); - // Wrap around if going above the maximum file size. - if (offset >= kMaxFile) { - offset = 0; - } - } - - state.SetBytesProcessed(static_cast<int64_t>(size) * - static_cast<int64_t>(state.iterations())); -} - -BENCHMARK(BM_SeqWrite)->Range(1, 1 << 26)->UseRealTime(); - -} // namespace - -} // namespace testing -} // namespace gvisor |