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db_basic_bench fix for DB object cleanup (#9939)

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Summary:
Use `unique_ptr<DB>` to make sure the DB object is deleted. Previously it was not, which led to accumulating file descriptors for deleted directories because a `DBImpl::db_dir_` from each test remained alive.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9939

Test Plan: run `lsof -p $(pidof db_basic_bench)` while benchmark runs; verify no FDs for deleted directories.

Reviewed By: jay-zhuang

Differential Revision: D36108761

Pulled By: ajkr

fbshipit-source-id: cfe02646b038a445af7d5db8989eb1f40d658359
main
Andrew Kryczka 3 years ago committed by Facebook GitHub Bot
parent bb87164db3
commit 440c7f6306
1 changed files with 53 additions and 36 deletions
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  1. 75
      microbench/db_basic_bench.cc

75
microbench/db_basic_bench.cc
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@ -118,7 +118,8 @@ class KeyGenerator {
}
};
static void SetupDB(benchmark::State& state, Options& options, DB** dpptr,
static void SetupDB(benchmark::State& state, Options& options,
std::unique_ptr<DB>* db,
const std::string& test_name = "") {
options.create_if_missing = true;
auto env = Env::Default();
@ -132,15 +133,17 @@ static void SetupDB(benchmark::State& state, Options& options, DB** dpptr,
db_path + kFilePathSeparator + test_name + std::to_string(getpid());
DestroyDB(db_name, options);
s = DB::Open(options, db_name, dpptr);
DB* db_ptr = nullptr;
s = DB::Open(options, db_name, &db_ptr);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
return;
}
db->reset(db_ptr);
}
static void TeardownDB(benchmark::State& state, DB* db, const Options& options,
KeyGenerator& kg) {
static void TeardownDB(benchmark::State& state, const std::unique_ptr<DB>& db,
const Options& options, KeyGenerator& kg) {
char min_buff[256], max_buff[256];
const Range r(kg.MinKey(min_buff), kg.MaxKey(max_buff));
uint64_t size;
@ -160,7 +163,7 @@ static void TeardownDB(benchmark::State& state, DB* db, const Options& options,
static void DBOpen(benchmark::State& state) {
// create DB
DB* db = nullptr;
std::unique_ptr<DB> db;
Options options;
SetupDB(state, options, &db, "DBOpen");
@ -172,12 +175,17 @@ static void DBOpen(benchmark::State& state) {
auto rnd = Random(123);
for (auto _ : state) {
Status s = DB::Open(options, db_name, &db);
{
DB* db_ptr = nullptr;
Status s = DB::Open(options, db_name, &db_ptr);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
}
db.reset(db_ptr);
}
state.PauseTiming();
auto wo = WriteOptions();
Status s;
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 100; j++) {
s = db->Put(wo, rnd.RandomString(10), rnd.RandomString(100));
@ -204,7 +212,7 @@ BENCHMARK(DBOpen)->Iterations(200); // specify iteration number as the db size
static void DBClose(benchmark::State& state) {
// create DB
DB* db;
std::unique_ptr<DB> db;
Options options;
SetupDB(state, options, &db, "DBClose");
@ -217,11 +225,16 @@ static void DBClose(benchmark::State& state) {
for (auto _ : state) {
state.PauseTiming();
Status s = DB::Open(options, db_name, &db);
{
DB* db_ptr = nullptr;
Status s = DB::Open(options, db_name, &db_ptr);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
}
db.reset(db_ptr);
}
auto wo = WriteOptions();
Status s;
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 100; j++) {
s = db->Put(wo, rnd.RandomString(10), rnd.RandomString(100));
@ -255,7 +268,7 @@ static void DBPut(benchmark::State& state) {
uint64_t key_num = max_data / per_key_size;
// setup DB
static DB* db = nullptr;
static std::unique_ptr<DB> db = nullptr;
Options options;
if (enable_statistics) {
options.statistics = CreateDBStatistics();
@ -284,7 +297,7 @@ static void DBPut(benchmark::State& state) {
}
if (state.thread_index() == 0) {
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
Status s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -332,7 +345,7 @@ static void ManualCompaction(benchmark::State& state) {
uint64_t key_num = max_data / per_key_size;
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
Options options;
if (enable_statistics) {
options.statistics = CreateDBStatistics();
@ -391,7 +404,7 @@ static void ManualCompaction(benchmark::State& state) {
}
if (state.thread_index() == 0) {
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -453,7 +466,7 @@ static void ManualFlush(benchmark::State& state) {
bool enable_statistics = true;
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
Options options;
if (enable_statistics) {
options.statistics = CreateDBStatistics();
@ -489,7 +502,7 @@ static void ManualFlush(benchmark::State& state) {
}
if (state.thread_index() == 0) {
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
Status s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -529,7 +542,7 @@ static void DBGet(benchmark::State& state) {
uint64_t key_num = max_data / per_key_size;
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
Options options;
if (enable_statistics) {
options.statistics = CreateDBStatistics();
@ -573,7 +586,7 @@ static void DBGet(benchmark::State& state) {
state.SkipWithError(s.ToString().c_str());
}
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -648,7 +661,7 @@ BENCHMARK(DBGet)->Threads(8)->Iterations(kDBGetNum / 8)->Apply(DBGetArguments);
static void SimpleGetWithPerfContext(benchmark::State& state) {
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
std::string db_name;
Options options;
options.create_if_missing = true;
@ -668,11 +681,15 @@ static void SimpleGetWithPerfContext(benchmark::State& state) {
db_name = db_path + "/simple_get_" + std::to_string(getpid());
DestroyDB(db_name, options);
s = DB::Open(options, db_name, &db);
{
DB* db_ptr = nullptr;
s = DB::Open(options, db_name, &db_ptr);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
return;
}
db.reset(db_ptr);
}
// load db
auto wo = WriteOptions();
wo.disableWAL = true;
@ -682,7 +699,7 @@ static void SimpleGetWithPerfContext(benchmark::State& state) {
state.SkipWithError(s.ToString().c_str());
}
}
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -858,7 +875,7 @@ static void IteratorSeek(benchmark::State& state) {
uint64_t key_num = max_data / per_key_size;
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
Options options;
if (enable_statistics) {
options.statistics = CreateDBStatistics();
@ -894,7 +911,7 @@ static void IteratorSeek(benchmark::State& state) {
state.SkipWithError(s.ToString().c_str());
}
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -961,7 +978,7 @@ static void IteratorNext(benchmark::State& state) {
uint64_t key_num = max_data / per_key_size;
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
Options options;
options.compaction_style = compaction_style;
@ -987,7 +1004,7 @@ static void IteratorNext(benchmark::State& state) {
state.SkipWithError(s.ToString().c_str());
}
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -1036,7 +1053,7 @@ BENCHMARK(IteratorNext)
static void IteratorNextWithPerfContext(benchmark::State& state) {
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
Options options;
auto rnd = Random(301 + state.thread_index());
@ -1053,7 +1070,7 @@ static void IteratorNextWithPerfContext(benchmark::State& state) {
state.SkipWithError(s.ToString().c_str());
}
}
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
Status s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -1128,7 +1145,7 @@ static void IteratorPrev(benchmark::State& state) {
uint64_t key_num = max_data / per_key_size;
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
std::string db_name;
Options options;
options.compaction_style = compaction_style;
@ -1155,7 +1172,7 @@ static void IteratorPrev(benchmark::State& state) {
state.SkipWithError(s.ToString().c_str());
}
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());
@ -1212,7 +1229,7 @@ static void PrefixSeek(benchmark::State& state) {
uint64_t key_num = max_data / per_key_size;
// setup DB
static DB* db;
static std::unique_ptr<DB> db;
Options options;
if (enable_statistics) {
options.statistics = CreateDBStatistics();
@ -1249,7 +1266,7 @@ static void PrefixSeek(benchmark::State& state) {
state.SkipWithError(s.ToString().c_str());
}
auto db_full = static_cast_with_check<DBImpl>(db);
auto db_full = static_cast_with_check<DBImpl>(db.get());
s = db_full->WaitForCompact(true);
if (!s.ok()) {
state.SkipWithError(s.ToString().c_str());

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