db_bench.cc File Reference

#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include "db/db_impl.h"
#include "db/version_set.h"
#include "leveldb/cache.h"
#include "leveldb/db.h"
#include "leveldb/env.h"
#include "leveldb/write_batch.h"
#include "port/port.h"
#include "util/crc32c.h"
#include "util/histogram.h"
#include "util/mutexlock.h"
#include "util/random.h"
#include "util/testutil.h"

Include dependency graph for db_bench.cc:

Go to the source code of this file.

Classes
class	leveldb::anonymous_namespace{db_bench.cc}::RandomGenerator
class	leveldb::anonymous_namespace{db_bench.cc}::Stats
struct	leveldb::anonymous_namespace{db_bench.cc}::SharedState
struct	leveldb::anonymous_namespace{db_bench.cc}::ThreadState
class	leveldb::Benchmark
struct	leveldb::Benchmark::ThreadArg

Namespaces
	leveldb
	leveldb::anonymous_namespace{db_bench.cc}

Functions
static void	leveldb::anonymous_namespace{db_bench.cc}::AppendWithSpace (std::string *str, Slice msg)
int	main (int argc, char **argv)

Variables
static const char *	FLAGS_benchmarks
static int	FLAGS_num = 1000000
static int	FLAGS_reads = -1
static int	FLAGS_threads = 1
static int	FLAGS_value_size = 100
static double	FLAGS_compression_ratio = 0.5
static bool	FLAGS_histogram = false
static int	FLAGS_write_buffer_size = 0
static int	FLAGS_max_file_size = 0
static int	FLAGS_block_size = 0
static int	FLAGS_cache_size = -1
static int	FLAGS_open_files = 0
static int	FLAGS_bloom_bits = -1
static bool	FLAGS_use_existing_db = false
static bool	FLAGS_reuse_logs = false
static const char *	FLAGS_db = NULL
leveldb::Env *	leveldb::anonymous_namespace{db_bench.cc}::g_env = NULL

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 956 of file db_bench.cc.

                                {
  FLAGS_write_buffer_size = leveldb::Options().write_buffer_size;
  FLAGS_max_file_size = leveldb::Options().max_file_size;
  FLAGS_block_size = leveldb::Options().block_size;
  FLAGS_open_files = leveldb::Options().max_open_files;
  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], "--compression_ratio=%lf%c", &d, &junk) == 1) {
      FLAGS_compression_ratio = d;
    } else if (sscanf(argv[i], "--histogram=%d%c", &n, &junk) == 1 &&
               (n == 0 || n == 1)) {
      FLAGS_histogram = n;
    } 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], "--reuse_logs=%d%c", &n, &junk) == 1 &&
               (n == 0 || n == 1)) {
      FLAGS_reuse_logs = 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], "--threads=%d%c", &n, &junk) == 1) {
      FLAGS_threads = n;
    } else if (sscanf(argv[i], "--value_size=%d%c", &n, &junk) == 1) {
      FLAGS_value_size = n;
    } else if (sscanf(argv[i], "--write_buffer_size=%d%c", &n, &junk) == 1) {
      FLAGS_write_buffer_size = n;
    } else if (sscanf(argv[i], "--max_file_size=%d%c", &n, &junk) == 1) {
      FLAGS_max_file_size = n;
    } else if (sscanf(argv[i], "--block_size=%d%c", &n, &junk) == 1) {
      FLAGS_block_size = n;
    } else if (sscanf(argv[i], "--cache_size=%d%c", &n, &junk) == 1) {
      FLAGS_cache_size = n;
    } else if (sscanf(argv[i], "--bloom_bits=%d%c", &n, &junk) == 1) {
      FLAGS_bloom_bits = n;
    } else if (sscanf(argv[i], "--open_files=%d%c", &n, &junk) == 1) {
      FLAGS_open_files = 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);
    }
  }

  leveldb::g_env = leveldb::Env::Default();

  // Choose a location for the test database if none given with --db=<path>
  if (FLAGS_db == NULL) {
      leveldb::g_env->GetTestDirectory(&default_db_path);
      default_db_path += "/dbbench";
      FLAGS_db = default_db_path.c_str();
  }

  leveldb::Benchmark benchmark;
  benchmark.Run();
  return 0;
}

Here is the call graph for this function:

Variable Documentation

FLAGS_benchmarks

const char* FLAGS_benchmarks

static

Initial value:

=
    "fillseq,"
    "fillsync,"
    "fillrandom,"
    "overwrite,"
    "readrandom,"
    "readrandom,"  
    "readseq,"
    "readreverse,"
    "compact,"
    "readrandom,"
    "readseq,"
    "readreverse,"
    "fill100K,"
    "crc32c,"
    "snappycomp,"
    "snappyuncomp,"
    "acquireload,"

Definition at line 44 of file db_bench.cc.

FLAGS_block_size

int FLAGS_block_size = 0

static

Definition at line 93 of file db_bench.cc.

FLAGS_bloom_bits

int FLAGS_bloom_bits = -1

static

Definition at line 104 of file db_bench.cc.

FLAGS_cache_size

int FLAGS_cache_size = -1

static

Definition at line 97 of file db_bench.cc.

FLAGS_compression_ratio

double FLAGS_compression_ratio = 0.5

static

Definition at line 78 of file db_bench.cc.

FLAGS_db

const char* FLAGS_db = NULL

static

Definition at line 115 of file db_bench.cc.

FLAGS_histogram

bool FLAGS_histogram = false

static

Definition at line 81 of file db_bench.cc.

FLAGS_max_file_size

int FLAGS_max_file_size = 0

static

Definition at line 89 of file db_bench.cc.

FLAGS_num

int FLAGS_num = 1000000

static

Definition at line 65 of file db_bench.cc.

FLAGS_open_files

int FLAGS_open_files = 0

static

Definition at line 100 of file db_bench.cc.

FLAGS_reads

int FLAGS_reads = -1

static

Definition at line 68 of file db_bench.cc.

FLAGS_reuse_logs

bool FLAGS_reuse_logs = false

static

Definition at line 112 of file db_bench.cc.

FLAGS_threads

int FLAGS_threads = 1

static

Definition at line 71 of file db_bench.cc.

FLAGS_use_existing_db

bool FLAGS_use_existing_db = false

static

Definition at line 109 of file db_bench.cc.

FLAGS_value_size

int FLAGS_value_size = 100

static

Definition at line 74 of file db_bench.cc.

FLAGS_write_buffer_size

int FLAGS_write_buffer_size = 0

static

Definition at line 85 of file db_bench.cc.