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add more options to db_ben 

Summary: as subject

Test Plan: run db_bench with new options

Reviewers: dhruba

Differential Revision: https://reviews.facebook.net/D4677
This commit is contained in:
heyongqiang 2012-08-15 15:44:23 -07:00
parent fcb2ea4715
commit f16e393658
2 changed files with 47 additions and 9 deletions
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38
db/db_bench.cc
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@ -120,9 +120,26 @@ static class leveldb::DBStatistics* dbstats = NULL;
// Number of write operations to do. If negative, do FLAGS_num reads.
static long FLAGS_writes = -1;
// These default values might change if the hardcoded
// Sync all writes to disk
static bool FLAGS_sync = false;
// If true, do not wait until data is synced to disk.
static bool FLAGS_disable_data_sync = false;
// Target level-0 file size for compaction
static int FLAGS_target_file_size_base = 2 * 1048576;
// A multiplier to compute targe level-N file size
static int FLAGS_target_file_size_multiplier = 1;
// Max bytes for level-0
static int FLAGS_max_bytes_for_level_base = 10 * 1048576;
// A multiplier to compute max bytes for level-N
static int FLAGS_max_bytes_for_level_multiplier = 10;
// posix or hdfs environment
static leveldb::Env* FLAGS_env = leveldb::Env::Default();
@ -745,6 +762,12 @@ class Benchmark {
options.max_open_files = FLAGS_open_files;
options.statistics = dbstats;
options.env = FLAGS_env;
options.disableDataSync = FLAGS_disable_data_sync;
options.target_file_size_base = FLAGS_target_file_size_base;
options.target_file_size_multiplier = FLAGS_target_file_size_multiplier;
options.max_bytes_for_level_base = FLAGS_max_bytes_for_level_base;
options.max_bytes_for_level_multiplier =
FLAGS_max_bytes_for_level_multiplier;
Status s = DB::Open(options, FLAGS_db, &db_);
if (!s.ok()) {
fprintf(stderr, "open error: %s\n", s.ToString().c_str());
@ -1030,8 +1053,23 @@ int main(int argc, char** argv) {
} else if (sscanf(argv[i], "--sync=%d%c", &n, &junk) == 1 &&
(n == 0 || n == 1)) {
FLAGS_sync = n;
} else if (sscanf(argv[i], "--disable_data_sync=%d%c", &n, &junk) == 1 &&
(n == 0 || n == 1)) {
FLAGS_disable_data_sync = n;
} else if (sscanf(argv[i], "--hdfs=%s", &hdfsname) == 1) {
FLAGS_env = new leveldb::HdfsEnv(hdfsname);
} else if (sscanf(argv[i], "--target_file_size_base=%d%c",
&n, &junk) == 1) {
FLAGS_target_file_size_base = n;
} else if ( sscanf(argv[i], "--target_file_size_multiplier=%d%c",
&n, &junk) == 1) {
FLAGS_target_file_size_multiplier = n;
} else if (
sscanf(argv[i], "--max_bytes_for_level_base=%d%c", &n, &junk) == 1) {
FLAGS_max_bytes_for_level_base = n;
} else if (sscanf(argv[i], "--max_bytes_for_level_multiplier=%d%c",
&n, &junk) == 1) {
FLAGS_max_bytes_for_level_multiplier = n;
} else {
fprintf(stderr, "Invalid flag '%s'\n", argv[i]);
exit(1);