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Enhance db_bench to allow setting the number of levels in a database. 

Summary: Enhance db_bench to allow setting the number of levels in a database.

Test Plan: run db_bench and look at LOG

Reviewers: heyongqiang, MarkCallaghan

Reviewed By: MarkCallaghan

CC: MarkCallaghan

Differential Revision: https://reviews.facebook.net/D6027
This commit is contained in:
Dhruba Borthakur 2012-10-15 10:10:56 -07:00
parent 5dc784c233
commit 0230866791
1 changed files with 8 additions and 1 deletions
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9
db/db_bench.cc
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@ -138,13 +138,16 @@ static bool FLAGS_use_fsync = false;
// If true, do not write WAL for write.
static bool FLAGS_disable_wal = false;
// The total number of levels
static int FLAGS_num_levels = 7;
// 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
// Max bytes for level-1
static int FLAGS_max_bytes_for_level_base = 10 * 1048576;
// A multiplier to compute max bytes for level-N
@ -872,6 +875,7 @@ class Benchmark {
options.env = FLAGS_env;
options.disableDataSync = FLAGS_disable_data_sync;
options.use_fsync = FLAGS_use_fsync;
options.num_levels = FLAGS_num_levels;
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;
@ -1249,6 +1253,9 @@ int main(int argc, char** argv) {
FLAGS_disable_wal = n;
} else if (sscanf(argv[i], "--hdfs=%s", hdfsname) == 1) {
FLAGS_env = new leveldb::HdfsEnv(hdfsname);
} else if (sscanf(argv[i], "--num_levels=%d%c",
&n, &junk) == 1) {
FLAGS_num_levels = n;
} else if (sscanf(argv[i], "--target_file_size_base=%d%c",
&n, &junk) == 1) {
FLAGS_target_file_size_base = n;