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Extract benchmark from db_test.cc.

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The benchmark in db/db_test.cc is extracted to its own file,
benchmarks/db_bench_log.cc.

PiperOrigin-RevId: 418713499
This commit is contained in:
Victor Costan 2021-12-29 03:48:42 +00:00 committed by Victor Costan
parent 335876a133
commit b2801ee1a0
3 changed files with 99 additions and 71 deletions
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14
CMakeLists.txt
View File

@ -298,11 +298,6 @@ if(LEVELDB_BUILD_TESTS)
# This project is tested using GoogleTest.
add_subdirectory("third_party/googletest")
# This project uses Google benchmark for benchmarking.
set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
set(BENCHMARK_ENABLE_EXCEPTIONS OFF CACHE BOOL "" FORCE)
add_subdirectory("third_party/benchmark")
# GoogleTest triggers a missing field initializers warning.
if(LEVELDB_HAVE_NO_MISSING_FIELD_INITIALIZERS)
set_property(TARGET gtest
@ -323,7 +318,7 @@ if(LEVELDB_BUILD_TESTS)
"${test_file}"
)
target_link_libraries("${test_target_name}" leveldb gmock gtest benchmark)
target_link_libraries("${test_target_name}" leveldb gmock gtest)
target_compile_definitions("${test_target_name}"
PRIVATE
${LEVELDB_PLATFORM_NAME}=1
@ -386,6 +381,11 @@ if(LEVELDB_BUILD_TESTS)
endif(LEVELDB_BUILD_TESTS)
if(LEVELDB_BUILD_BENCHMARKS)
# This project uses Google benchmark for benchmarking.
set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
set(BENCHMARK_ENABLE_EXCEPTIONS OFF CACHE BOOL "" FORCE)
add_subdirectory("third_party/benchmark")
function(leveldb_benchmark bench_file)
get_filename_component(bench_target_name "${bench_file}" NAME_WE)
@ -400,7 +400,7 @@ if(LEVELDB_BUILD_BENCHMARKS)
"${bench_file}"
)
target_link_libraries("${bench_target_name}" leveldb gmock gtest)
target_link_libraries("${bench_target_name}" leveldb gmock gtest benchmark)
target_compile_definitions("${bench_target_name}"
PRIVATE
${LEVELDB_PLATFORM_NAME}=1

92
benchmarks/db_bench_log.cc Normal file
View File

@ -0,0 +1,92 @@
// Copyright (c) 2019 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <cinttypes>
#include <cstdio>
#include <string>
#include "gtest/gtest.h"
#include "benchmark/benchmark.h"
#include "db/version_set.h"
#include "leveldb/comparator.h"
#include "leveldb/db.h"
#include "leveldb/env.h"
#include "leveldb/options.h"
#include "port/port.h"
#include "util/mutexlock.h"
#include "util/testutil.h"
namespace leveldb {
namespace {
std::string MakeKey(unsigned int num) {
char buf[30];
std::snprintf(buf, sizeof(buf), "%016u", num);
return std::string(buf);
}
void BM_LogAndApply(benchmark::State& state) {
const int num_base_files = state.range(0);
std::string dbname = testing::TempDir() + "leveldb_test_benchmark";
DestroyDB(dbname, Options());
DB* db = nullptr;
Options opts;
opts.create_if_missing = true;
Status s = DB::Open(opts, dbname, &db);
ASSERT_LEVELDB_OK(s);
ASSERT_TRUE(db != nullptr);
delete db;
db = nullptr;
Env* env = Env::Default();
port::Mutex mu;
MutexLock l(&mu);
InternalKeyComparator cmp(BytewiseComparator());
Options options;
VersionSet vset(dbname, &options, nullptr, &cmp);
bool save_manifest;
ASSERT_LEVELDB_OK(vset.Recover(&save_manifest));
VersionEdit vbase;
uint64_t fnum = 1;
for (int i = 0; i < num_base_files; i++) {
InternalKey start(MakeKey(2 * fnum), 1, kTypeValue);
InternalKey limit(MakeKey(2 * fnum + 1), 1, kTypeDeletion);
vbase.AddFile(2, fnum++, 1 /* file size */, start, limit);
}
ASSERT_LEVELDB_OK(vset.LogAndApply(&vbase, &mu));
uint64_t start_micros = env->NowMicros();
for (auto st : state) {
VersionEdit vedit;
vedit.RemoveFile(2, fnum);
InternalKey start(MakeKey(2 * fnum), 1, kTypeValue);
InternalKey limit(MakeKey(2 * fnum + 1), 1, kTypeDeletion);
vedit.AddFile(2, fnum++, 1 /* file size */, start, limit);
vset.LogAndApply(&vedit, &mu);
}
uint64_t stop_micros = env->NowMicros();
unsigned int us = stop_micros - start_micros;
char buf[16];
std::snprintf(buf, sizeof(buf), "%d", num_base_files);
std::fprintf(stderr,
"BM_LogAndApply/%-6s %8" PRIu64
" iters : %9u us (%7.0f us / iter)\n",
buf, state.iterations(), us, ((float)us) / state.iterations());
}
BENCHMARK(BM_LogAndApply)->Arg(1)->Arg(100)->Arg(10000)->Arg(100000);
} // namespace
} // namespace leveldb
BENCHMARK_MAIN();

64
db/db_test.cc
View File

@ -9,7 +9,6 @@
#include <string>
#include "gtest/gtest.h"
#include "benchmark/benchmark.h"
#include "db/db_impl.h"
#include "db/filename.h"
#include "db/version_set.h"
@ -2295,72 +2294,9 @@ TEST_F(DBTest, Randomized) {
} while (ChangeOptions());
}
std::string MakeKey(unsigned int num) {
char buf[30];
std::snprintf(buf, sizeof(buf), "%016u", num);
return std::string(buf);
}
static void BM_LogAndApply(benchmark::State& state) {
const int num_base_files = state.range(0);
std::string dbname = testing::TempDir() + "leveldb_test_benchmark";
DestroyDB(dbname, Options());
DB* db = nullptr;
Options opts;
opts.create_if_missing = true;
Status s = DB::Open(opts, dbname, &db);
ASSERT_LEVELDB_OK(s);
ASSERT_TRUE(db != nullptr);
delete db;
db = nullptr;
Env* env = Env::Default();
port::Mutex mu;
MutexLock l(&mu);
InternalKeyComparator cmp(BytewiseComparator());
Options options;
VersionSet vset(dbname, &options, nullptr, &cmp);
bool save_manifest;
ASSERT_LEVELDB_OK(vset.Recover(&save_manifest));
VersionEdit vbase;
uint64_t fnum = 1;
for (int i = 0; i < num_base_files; i++) {
InternalKey start(MakeKey(2 * fnum), 1, kTypeValue);
InternalKey limit(MakeKey(2 * fnum + 1), 1, kTypeDeletion);
vbase.AddFile(2, fnum++, 1 /* file size */, start, limit);
}
ASSERT_LEVELDB_OK(vset.LogAndApply(&vbase, &mu));
uint64_t start_micros = env->NowMicros();
for (auto st : state) {
VersionEdit vedit;
vedit.RemoveFile(2, fnum);
InternalKey start(MakeKey(2 * fnum), 1, kTypeValue);
InternalKey limit(MakeKey(2 * fnum + 1), 1, kTypeDeletion);
vedit.AddFile(2, fnum++, 1 /* file size */, start, limit);
vset.LogAndApply(&vedit, &mu);
}
uint64_t stop_micros = env->NowMicros();
unsigned int us = stop_micros - start_micros;
char buf[16];
std::snprintf(buf, sizeof(buf), "%d", num_base_files);
std::fprintf(stderr,
"BM_LogAndApply/%-6s %8" PRIu64
" iters : %9u us (%7.0f us / iter)\n",
buf, state.iterations(), us, ((float)us) / state.iterations());
}
BENCHMARK(BM_LogAndApply)->Arg(1)->Arg(100)->Arg(10000)->Arg(100000);
} // namespace leveldb
int main(int argc, char** argv) {
testing::InitGoogleTest(&argc, argv);
benchmark::RunSpecifiedBenchmarks();
return RUN_ALL_TESTS();
}