| // Copyright (c) 2011 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 <stdio.h> |
| #include <stdlib.h> |
| #include <sqlite3.h> |
| #include "util/histogram.h" |
| #include "util/random.h" |
| #include "util/testutil.h" |
| |
| // Comma-separated list of operations to run in the specified order |
| // Actual benchmarks: |
| // |
| // fillseq -- write N values in sequential key order in async mode |
| // fillseqsync -- write N/100 values in sequential key order in sync mode |
| // fillseqbatch -- batch write N values in sequential key order in async mode |
| // fillrandom -- write N values in random key order in async mode |
| // fillrandsync -- write N/100 values in random key order in sync mode |
| // fillrandbatch -- batch write N values in sequential key order in async mode |
| // overwrite -- overwrite N values in random key order in async mode |
| // fillrand100K -- write N/1000 100K values in random order in async mode |
| // fillseq100K -- write N/1000 100K values in sequential order in async mode |
| // readseq -- read N times sequentially |
| // readrandom -- read N times in random order |
| // readrand100K -- read N/1000 100K values in sequential order in async mode |
| static const char* FLAGS_benchmarks = |
| "fillseq," |
| "fillseqsync," |
| "fillseqbatch," |
| "fillrandom," |
| "fillrandsync," |
| "fillrandbatch," |
| "overwrite," |
| "overwritebatch," |
| "readrandom," |
| "readseq," |
| "fillrand100K," |
| "fillseq100K," |
| "readseq," |
| "readrand100K," |
| ; |
| |
| // Number of key/values to place in database |
| static int FLAGS_num = 1000000; |
| |
| // Number of read operations to do. If negative, do FLAGS_num reads. |
| static int FLAGS_reads = -1; |
| |
| // Size of each value |
| static int FLAGS_value_size = 100; |
| |
| // Print histogram of operation timings |
| static bool FLAGS_histogram = false; |
| |
| // Arrange to generate values that shrink to this fraction of |
| // their original size after compression |
| static double FLAGS_compression_ratio = 0.5; |
| |
| // Page size. Default 1 KB. |
| static int FLAGS_page_size = 1024; |
| |
| // Number of pages. |
| // Default cache size = FLAGS_page_size * FLAGS_num_pages = 4 MB. |
| static int FLAGS_num_pages = 4096; |
| |
| // If true, do not destroy the existing database. If you set this |
| // flag and also specify a benchmark that wants a fresh database, that |
| // benchmark will fail. |
| static bool FLAGS_use_existing_db = false; |
| |
| // If true, we allow batch writes to occur |
| static bool FLAGS_transaction = true; |
| |
| // If true, we enable Write-Ahead Logging |
| static bool FLAGS_WAL_enabled = true; |
| |
| // Use the db with the following name. |
| static const char* FLAGS_db = NULL; |
| |
| inline |
| static void ExecErrorCheck(int status, char *err_msg) { |
| if (status != SQLITE_OK) { |
| fprintf(stderr, "SQL error: %s\n", err_msg); |
| sqlite3_free(err_msg); |
| exit(1); |
| } |
| } |
| |
| inline |
| static void StepErrorCheck(int status) { |
| if (status != SQLITE_DONE) { |
| fprintf(stderr, "SQL step error: status = %d\n", status); |
| exit(1); |
| } |
| } |
| |
| inline |
| static void ErrorCheck(int status) { |
| if (status != SQLITE_OK) { |
| fprintf(stderr, "sqlite3 error: status = %d\n", status); |
| exit(1); |
| } |
| } |
| |
| inline |
| static void WalCheckpoint(sqlite3* db_) { |
| // Flush all writes to disk |
| if (FLAGS_WAL_enabled) { |
| sqlite3_wal_checkpoint_v2(db_, NULL, SQLITE_CHECKPOINT_FULL, NULL, NULL); |
| } |
| } |
| |
| namespace leveldb { |
| |
| // Helper for quickly generating random data. |
| namespace { |
| class RandomGenerator { |
| private: |
| std::string data_; |
| int pos_; |
| |
| public: |
| RandomGenerator() { |
| // We use a limited amount of data over and over again and ensure |
| // that it is larger than the compression window (32KB), and also |
| // large enough to serve all typical value sizes we want to write. |
| Random rnd(301); |
| std::string piece; |
| while (data_.size() < 1048576) { |
| // Add a short fragment that is as compressible as specified |
| // by FLAGS_compression_ratio. |
| test::CompressibleString(&rnd, FLAGS_compression_ratio, 100, &piece); |
| data_.append(piece); |
| } |
| pos_ = 0; |
| } |
| |
| Slice Generate(int len) { |
| if (pos_ + len > data_.size()) { |
| pos_ = 0; |
| assert(len < data_.size()); |
| } |
| pos_ += len; |
| return Slice(data_.data() + pos_ - len, len); |
| } |
| }; |
| |
| static Slice TrimSpace(Slice s) { |
| int start = 0; |
| while (start < s.size() && isspace(s[start])) { |
| start++; |
| } |
| int limit = s.size(); |
| while (limit > start && isspace(s[limit-1])) { |
| limit--; |
| } |
| return Slice(s.data() + start, limit - start); |
| } |
| |
| } // namespace |
| |
| class Benchmark { |
| private: |
| sqlite3* db_; |
| int db_num_; |
| int num_; |
| int reads_; |
| double start_; |
| double last_op_finish_; |
| int64_t bytes_; |
| std::string message_; |
| Histogram hist_; |
| RandomGenerator gen_; |
| Random rand_; |
| |
| // State kept for progress messages |
| int done_; |
| int next_report_; // When to report next |
| |
| void PrintHeader() { |
| const int kKeySize = 16; |
| PrintEnvironment(); |
| fprintf(stdout, "Keys: %d bytes each\n", kKeySize); |
| fprintf(stdout, "Values: %d bytes each\n", FLAGS_value_size); |
| fprintf(stdout, "Entries: %d\n", num_); |
| fprintf(stdout, "RawSize: %.1f MB (estimated)\n", |
| ((static_cast<int64_t>(kKeySize + FLAGS_value_size) * num_) |
| / 1048576.0)); |
| PrintWarnings(); |
| fprintf(stdout, "------------------------------------------------\n"); |
| } |
| |
| void PrintWarnings() { |
| #if defined(__GNUC__) && !defined(__OPTIMIZE__) |
| fprintf(stdout, |
| "WARNING: Optimization is disabled: benchmarks unnecessarily slow\n" |
| ); |
| #endif |
| #ifndef NDEBUG |
| fprintf(stdout, |
| "WARNING: Assertions are enabled; benchmarks unnecessarily slow\n"); |
| #endif |
| } |
| |
| void PrintEnvironment() { |
| fprintf(stderr, "SQLite: version %s\n", SQLITE_VERSION); |
| |
| #if defined(__linux) |
| time_t now = time(NULL); |
| fprintf(stderr, "Date: %s", ctime(&now)); // ctime() adds newline |
| |
| FILE* cpuinfo = fopen("/proc/cpuinfo", "r"); |
| if (cpuinfo != NULL) { |
| char line[1000]; |
| int num_cpus = 0; |
| std::string cpu_type; |
| std::string cache_size; |
| while (fgets(line, sizeof(line), cpuinfo) != NULL) { |
| const char* sep = strchr(line, ':'); |
| if (sep == NULL) { |
| continue; |
| } |
| Slice key = TrimSpace(Slice(line, sep - 1 - line)); |
| Slice val = TrimSpace(Slice(sep + 1)); |
| if (key == "model name") { |
| ++num_cpus; |
| cpu_type = val.ToString(); |
| } else if (key == "cache size") { |
| cache_size = val.ToString(); |
| } |
| } |
| fclose(cpuinfo); |
| fprintf(stderr, "CPU: %d * %s\n", num_cpus, cpu_type.c_str()); |
| fprintf(stderr, "CPUCache: %s\n", cache_size.c_str()); |
| } |
| #endif |
| } |
| |
| void Start() { |
| start_ = Env::Default()->NowMicros() * 1e-6; |
| bytes_ = 0; |
| message_.clear(); |
| last_op_finish_ = start_; |
| hist_.Clear(); |
| done_ = 0; |
| next_report_ = 100; |
| } |
| |
| void FinishedSingleOp() { |
| if (FLAGS_histogram) { |
| double now = Env::Default()->NowMicros() * 1e-6; |
| double micros = (now - last_op_finish_) * 1e6; |
| hist_.Add(micros); |
| if (micros > 20000) { |
| fprintf(stderr, "long op: %.1f micros%30s\r", micros, ""); |
| fflush(stderr); |
| } |
| last_op_finish_ = now; |
| } |
| |
| done_++; |
| if (done_ >= next_report_) { |
| if (next_report_ < 1000) next_report_ += 100; |
| else if (next_report_ < 5000) next_report_ += 500; |
| else if (next_report_ < 10000) next_report_ += 1000; |
| else if (next_report_ < 50000) next_report_ += 5000; |
| else if (next_report_ < 100000) next_report_ += 10000; |
| else if (next_report_ < 500000) next_report_ += 50000; |
| else next_report_ += 100000; |
| fprintf(stderr, "... finished %d ops%30s\r", done_, ""); |
| fflush(stderr); |
| } |
| } |
| |
| void Stop(const Slice& name) { |
| double finish = Env::Default()->NowMicros() * 1e-6; |
| |
| // Pretend at least one op was done in case we are running a benchmark |
| // that does not call FinishedSingleOp(). |
| if (done_ < 1) done_ = 1; |
| |
| if (bytes_ > 0) { |
| char rate[100]; |
| snprintf(rate, sizeof(rate), "%6.1f MB/s", |
| (bytes_ / 1048576.0) / (finish - start_)); |
| if (!message_.empty()) { |
| message_ = std::string(rate) + " " + message_; |
| } else { |
| message_ = rate; |
| } |
| } |
| |
| fprintf(stdout, "%-12s : %11.3f micros/op;%s%s\n", |
| name.ToString().c_str(), |
| (finish - start_) * 1e6 / done_, |
| (message_.empty() ? "" : " "), |
| message_.c_str()); |
| if (FLAGS_histogram) { |
| fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str()); |
| } |
| fflush(stdout); |
| } |
| |
| public: |
| enum Order { |
| SEQUENTIAL, |
| RANDOM |
| }; |
| enum DBState { |
| FRESH, |
| EXISTING |
| }; |
| |
| Benchmark() |
| : db_(NULL), |
| db_num_(0), |
| num_(FLAGS_num), |
| reads_(FLAGS_reads < 0 ? FLAGS_num : FLAGS_reads), |
| bytes_(0), |
| rand_(301) { |
| std::vector<std::string> files; |
| std::string test_dir; |
| Env::Default()->GetTestDirectory(&test_dir); |
| Env::Default()->GetChildren(test_dir, &files); |
| if (!FLAGS_use_existing_db) { |
| for (int i = 0; i < files.size(); i++) { |
| if (Slice(files[i]).starts_with("dbbench_sqlite3")) { |
| std::string file_name(test_dir); |
| file_name += "/"; |
| file_name += files[i]; |
| Env::Default()->DeleteFile(file_name.c_str()); |
| } |
| } |
| } |
| } |
| |
| ~Benchmark() { |
| int status = sqlite3_close(db_); |
| ErrorCheck(status); |
| } |
| |
| void Run() { |
| PrintHeader(); |
| Open(); |
| |
| const char* benchmarks = FLAGS_benchmarks; |
| while (benchmarks != NULL) { |
| const char* sep = strchr(benchmarks, ','); |
| Slice name; |
| if (sep == NULL) { |
| name = benchmarks; |
| benchmarks = NULL; |
| } else { |
| name = Slice(benchmarks, sep - benchmarks); |
| benchmarks = sep + 1; |
| } |
| |
| bytes_ = 0; |
| Start(); |
| |
| bool known = true; |
| bool write_sync = false; |
| if (name == Slice("fillseq")) { |
| Write(write_sync, SEQUENTIAL, FRESH, num_, FLAGS_value_size, 1); |
| WalCheckpoint(db_); |
| } else if (name == Slice("fillseqbatch")) { |
| Write(write_sync, SEQUENTIAL, FRESH, num_, FLAGS_value_size, 1000); |
| WalCheckpoint(db_); |
| } else if (name == Slice("fillrandom")) { |
| Write(write_sync, RANDOM, FRESH, num_, FLAGS_value_size, 1); |
| WalCheckpoint(db_); |
| } else if (name == Slice("fillrandbatch")) { |
| Write(write_sync, RANDOM, FRESH, num_, FLAGS_value_size, 1000); |
| WalCheckpoint(db_); |
| } else if (name == Slice("overwrite")) { |
| Write(write_sync, RANDOM, EXISTING, num_, FLAGS_value_size, 1); |
| WalCheckpoint(db_); |
| } else if (name == Slice("overwritebatch")) { |
| Write(write_sync, RANDOM, EXISTING, num_, FLAGS_value_size, 1000); |
| WalCheckpoint(db_); |
| } else if (name == Slice("fillrandsync")) { |
| write_sync = true; |
| Write(write_sync, RANDOM, FRESH, num_ / 100, FLAGS_value_size, 1); |
| WalCheckpoint(db_); |
| } else if (name == Slice("fillseqsync")) { |
| write_sync = true; |
| Write(write_sync, SEQUENTIAL, FRESH, num_ / 100, FLAGS_value_size, 1); |
| WalCheckpoint(db_); |
| } else if (name == Slice("fillrand100K")) { |
| Write(write_sync, RANDOM, FRESH, num_ / 1000, 100 * 1000, 1); |
| WalCheckpoint(db_); |
| } else if (name == Slice("fillseq100K")) { |
| Write(write_sync, SEQUENTIAL, FRESH, num_ / 1000, 100 * 1000, 1); |
| WalCheckpoint(db_); |
| } else if (name == Slice("readseq")) { |
| ReadSequential(); |
| } else if (name == Slice("readrandom")) { |
| Read(RANDOM, 1); |
| } else if (name == Slice("readrand100K")) { |
| int n = reads_; |
| reads_ /= 1000; |
| Read(RANDOM, 1); |
| reads_ = n; |
| } else { |
| known = false; |
| if (name != Slice()) { // No error message for empty name |
| fprintf(stderr, "unknown benchmark '%s'\n", name.ToString().c_str()); |
| } |
| } |
| if (known) { |
| Stop(name); |
| } |
| } |
| } |
| |
| void Open() { |
| assert(db_ == NULL); |
| |
| int status; |
| char file_name[100]; |
| char* err_msg = NULL; |
| db_num_++; |
| |
| // Open database |
| std::string tmp_dir; |
| Env::Default()->GetTestDirectory(&tmp_dir); |
| snprintf(file_name, sizeof(file_name), |
| "%s/dbbench_sqlite3-%d.db", |
| tmp_dir.c_str(), |
| db_num_); |
| status = sqlite3_open(file_name, &db_); |
| if (status) { |
| fprintf(stderr, "open error: %s\n", sqlite3_errmsg(db_)); |
| exit(1); |
| } |
| |
| // Change SQLite cache size |
| char cache_size[100]; |
| snprintf(cache_size, sizeof(cache_size), "PRAGMA cache_size = %d", |
| FLAGS_num_pages); |
| status = sqlite3_exec(db_, cache_size, NULL, NULL, &err_msg); |
| ExecErrorCheck(status, err_msg); |
| |
| // FLAGS_page_size is defaulted to 1024 |
| if (FLAGS_page_size != 1024) { |
| char page_size[100]; |
| snprintf(page_size, sizeof(page_size), "PRAGMA page_size = %d", |
| FLAGS_page_size); |
| status = sqlite3_exec(db_, page_size, NULL, NULL, &err_msg); |
| ExecErrorCheck(status, err_msg); |
| } |
| |
| // Change journal mode to WAL if WAL enabled flag is on |
| if (FLAGS_WAL_enabled) { |
| std::string WAL_stmt = "PRAGMA journal_mode = WAL"; |
| |
| // LevelDB's default cache size is a combined 4 MB |
| std::string WAL_checkpoint = "PRAGMA wal_autocheckpoint = 4096"; |
| status = sqlite3_exec(db_, WAL_stmt.c_str(), NULL, NULL, &err_msg); |
| ExecErrorCheck(status, err_msg); |
| status = sqlite3_exec(db_, WAL_checkpoint.c_str(), NULL, NULL, &err_msg); |
| ExecErrorCheck(status, err_msg); |
| } |
| |
| // Change locking mode to exclusive and create tables/index for database |
| std::string locking_stmt = "PRAGMA locking_mode = EXCLUSIVE"; |
| std::string create_stmt = |
| "CREATE TABLE test (key blob, value blob, PRIMARY KEY(key))"; |
| std::string stmt_array[] = { locking_stmt, create_stmt }; |
| int stmt_array_length = sizeof(stmt_array) / sizeof(std::string); |
| for (int i = 0; i < stmt_array_length; i++) { |
| status = sqlite3_exec(db_, stmt_array[i].c_str(), NULL, NULL, &err_msg); |
| ExecErrorCheck(status, err_msg); |
| } |
| } |
| |
| void Write(bool write_sync, Order order, DBState state, |
| int num_entries, int value_size, int entries_per_batch) { |
| // Create new database if state == FRESH |
| if (state == FRESH) { |
| if (FLAGS_use_existing_db) { |
| message_ = "skipping (--use_existing_db is true)"; |
| return; |
| } |
| sqlite3_close(db_); |
| db_ = NULL; |
| Open(); |
| Start(); |
| } |
| |
| if (num_entries != num_) { |
| char msg[100]; |
| snprintf(msg, sizeof(msg), "(%d ops)", num_entries); |
| message_ = msg; |
| } |
| |
| char* err_msg = NULL; |
| int status; |
| |
| sqlite3_stmt *replace_stmt, *begin_trans_stmt, *end_trans_stmt; |
| std::string replace_str = "REPLACE INTO test (key, value) VALUES (?, ?)"; |
| std::string begin_trans_str = "BEGIN TRANSACTION;"; |
| std::string end_trans_str = "END TRANSACTION;"; |
| |
| // Check for synchronous flag in options |
| std::string sync_stmt = (write_sync) ? "PRAGMA synchronous = FULL" : |
| "PRAGMA synchronous = OFF"; |
| status = sqlite3_exec(db_, sync_stmt.c_str(), NULL, NULL, &err_msg); |
| ExecErrorCheck(status, err_msg); |
| |
| // Preparing sqlite3 statements |
| status = sqlite3_prepare_v2(db_, replace_str.c_str(), -1, |
| &replace_stmt, NULL); |
| ErrorCheck(status); |
| status = sqlite3_prepare_v2(db_, begin_trans_str.c_str(), -1, |
| &begin_trans_stmt, NULL); |
| ErrorCheck(status); |
| status = sqlite3_prepare_v2(db_, end_trans_str.c_str(), -1, |
| &end_trans_stmt, NULL); |
| ErrorCheck(status); |
| |
| bool transaction = (entries_per_batch > 1); |
| for (int i = 0; i < num_entries; i += entries_per_batch) { |
| // Begin write transaction |
| if (FLAGS_transaction && transaction) { |
| status = sqlite3_step(begin_trans_stmt); |
| StepErrorCheck(status); |
| status = sqlite3_reset(begin_trans_stmt); |
| ErrorCheck(status); |
| } |
| |
| // Create and execute SQL statements |
| for (int j = 0; j < entries_per_batch; j++) { |
| const char* value = gen_.Generate(value_size).data(); |
| |
| // Create values for key-value pair |
| const int k = (order == SEQUENTIAL) ? i + j : |
| (rand_.Next() % num_entries); |
| char key[100]; |
| snprintf(key, sizeof(key), "%016d", k); |
| |
| // Bind KV values into replace_stmt |
| status = sqlite3_bind_blob(replace_stmt, 1, key, 16, SQLITE_STATIC); |
| ErrorCheck(status); |
| status = sqlite3_bind_blob(replace_stmt, 2, value, |
| value_size, SQLITE_STATIC); |
| ErrorCheck(status); |
| |
| // Execute replace_stmt |
| bytes_ += value_size + strlen(key); |
| status = sqlite3_step(replace_stmt); |
| StepErrorCheck(status); |
| |
| // Reset SQLite statement for another use |
| status = sqlite3_clear_bindings(replace_stmt); |
| ErrorCheck(status); |
| status = sqlite3_reset(replace_stmt); |
| ErrorCheck(status); |
| |
| FinishedSingleOp(); |
| } |
| |
| // End write transaction |
| if (FLAGS_transaction && transaction) { |
| status = sqlite3_step(end_trans_stmt); |
| StepErrorCheck(status); |
| status = sqlite3_reset(end_trans_stmt); |
| ErrorCheck(status); |
| } |
| } |
| |
| status = sqlite3_finalize(replace_stmt); |
| ErrorCheck(status); |
| status = sqlite3_finalize(begin_trans_stmt); |
| ErrorCheck(status); |
| status = sqlite3_finalize(end_trans_stmt); |
| ErrorCheck(status); |
| } |
| |
| void Read(Order order, int entries_per_batch) { |
| int status; |
| sqlite3_stmt *read_stmt, *begin_trans_stmt, *end_trans_stmt; |
| |
| std::string read_str = "SELECT * FROM test WHERE key = ?"; |
| std::string begin_trans_str = "BEGIN TRANSACTION;"; |
| std::string end_trans_str = "END TRANSACTION;"; |
| |
| // Preparing sqlite3 statements |
| status = sqlite3_prepare_v2(db_, begin_trans_str.c_str(), -1, |
| &begin_trans_stmt, NULL); |
| ErrorCheck(status); |
| status = sqlite3_prepare_v2(db_, end_trans_str.c_str(), -1, |
| &end_trans_stmt, NULL); |
| ErrorCheck(status); |
| status = sqlite3_prepare_v2(db_, read_str.c_str(), -1, &read_stmt, NULL); |
| ErrorCheck(status); |
| |
| bool transaction = (entries_per_batch > 1); |
| for (int i = 0; i < reads_; i += entries_per_batch) { |
| // Begin read transaction |
| if (FLAGS_transaction && transaction) { |
| status = sqlite3_step(begin_trans_stmt); |
| StepErrorCheck(status); |
| status = sqlite3_reset(begin_trans_stmt); |
| ErrorCheck(status); |
| } |
| |
| // Create and execute SQL statements |
| for (int j = 0; j < entries_per_batch; j++) { |
| // Create key value |
| char key[100]; |
| int k = (order == SEQUENTIAL) ? i + j : (rand_.Next() % reads_); |
| snprintf(key, sizeof(key), "%016d", k); |
| |
| // Bind key value into read_stmt |
| status = sqlite3_bind_blob(read_stmt, 1, key, 16, SQLITE_STATIC); |
| ErrorCheck(status); |
| |
| // Execute read statement |
| while ((status = sqlite3_step(read_stmt)) == SQLITE_ROW) {} |
| StepErrorCheck(status); |
| |
| // Reset SQLite statement for another use |
| status = sqlite3_clear_bindings(read_stmt); |
| ErrorCheck(status); |
| status = sqlite3_reset(read_stmt); |
| ErrorCheck(status); |
| FinishedSingleOp(); |
| } |
| |
| // End read transaction |
| if (FLAGS_transaction && transaction) { |
| status = sqlite3_step(end_trans_stmt); |
| StepErrorCheck(status); |
| status = sqlite3_reset(end_trans_stmt); |
| ErrorCheck(status); |
| } |
| } |
| |
| status = sqlite3_finalize(read_stmt); |
| ErrorCheck(status); |
| status = sqlite3_finalize(begin_trans_stmt); |
| ErrorCheck(status); |
| status = sqlite3_finalize(end_trans_stmt); |
| ErrorCheck(status); |
| } |
| |
| void ReadSequential() { |
| int status; |
| sqlite3_stmt *pStmt; |
| std::string read_str = "SELECT * FROM test ORDER BY key"; |
| |
| status = sqlite3_prepare_v2(db_, read_str.c_str(), -1, &pStmt, NULL); |
| ErrorCheck(status); |
| for (int i = 0; i < reads_ && SQLITE_ROW == sqlite3_step(pStmt); i++) { |
| bytes_ += sqlite3_column_bytes(pStmt, 1) + sqlite3_column_bytes(pStmt, 2); |
| FinishedSingleOp(); |
| } |
| |
| status = sqlite3_finalize(pStmt); |
| ErrorCheck(status); |
| } |
| |
| }; |
| |
| } // namespace leveldb |
| |
| int main(int argc, char** argv) { |
| std::string default_db_path; |
| for (int i = 1; i < argc; i++) { |
| double d; |
| int n; |
| char junk; |
| if (leveldb::Slice(argv[i]).starts_with("--benchmarks=")) { |
| FLAGS_benchmarks = argv[i] + strlen("--benchmarks="); |
| } else if (sscanf(argv[i], "--histogram=%d%c", &n, &junk) == 1 && |
| (n == 0 || n == 1)) { |
| FLAGS_histogram = n; |
| } else if (sscanf(argv[i], "--compression_ratio=%lf%c", &d, &junk) == 1) { |
| FLAGS_compression_ratio = d; |
| } else if (sscanf(argv[i], "--use_existing_db=%d%c", &n, &junk) == 1 && |
| (n == 0 || n == 1)) { |
| FLAGS_use_existing_db = n; |
| } else if (sscanf(argv[i], "--num=%d%c", &n, &junk) == 1) { |
| FLAGS_num = n; |
| } else if (sscanf(argv[i], "--reads=%d%c", &n, &junk) == 1) { |
| FLAGS_reads = n; |
| } else if (sscanf(argv[i], "--value_size=%d%c", &n, &junk) == 1) { |
| FLAGS_value_size = n; |
| } else if (leveldb::Slice(argv[i]) == leveldb::Slice("--no_transaction")) { |
| FLAGS_transaction = false; |
| } else if (sscanf(argv[i], "--page_size=%d%c", &n, &junk) == 1) { |
| FLAGS_page_size = n; |
| } else if (sscanf(argv[i], "--num_pages=%d%c", &n, &junk) == 1) { |
| FLAGS_num_pages = n; |
| } else if (sscanf(argv[i], "--WAL_enabled=%d%c", &n, &junk) == 1 && |
| (n == 0 || n == 1)) { |
| FLAGS_WAL_enabled = n; |
| } else if (strncmp(argv[i], "--db=", 5) == 0) { |
| FLAGS_db = argv[i] + 5; |
| } else { |
| fprintf(stderr, "Invalid flag '%s'\n", argv[i]); |
| exit(1); |
| } |
| } |
| |
| // Choose a location for the test database if none given with --db=<path> |
| if (FLAGS_db == NULL) { |
| leveldb::Env::Default()->GetTestDirectory(&default_db_path); |
| default_db_path += "/dbbench"; |
| FLAGS_db = default_db_path.c_str(); |
| } |
| |
| leveldb::Benchmark benchmark; |
| benchmark.Run(); |
| return 0; |
| } |