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Enhance dbstress to allow specifying compaction trigger for L0.

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Summary:
Rocksdb allos specifying the number of files in L0 that triggers
compactions. Expose this api as a command line parameter for
running db_stress.

Test Plan: Run test

Reviewers: sheki, emayanke

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11343
This commit is contained in:
Dhruba Borthakur 2013-06-17 13:51:12 -07:00
parent 00124683de
commit 836534debd
1 changed files with 14 additions and 0 deletions
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14
tools/db_stress.cc
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@ -177,6 +177,9 @@ static uint32_t FLAGS_log2_keys_per_lock = 2; // implies 2^2 keys per lock
// Percentage of times we want to purge redundant keys in memory before flushing
static uint32_t FLAGS_purge_redundant_percent = 50;
// Level0 compaction start trigger
static int FLAGS_level0_file_num_compaction_trigger = 0;
namespace leveldb {
class StressTest;
@ -940,6 +943,8 @@ class StressTest {
options.level0_stop_writes_trigger = FLAGS_level0_stop_writes_trigger;
options.level0_slowdown_writes_trigger =
FLAGS_level0_slowdown_writes_trigger;
options.level0_file_num_compaction_trigger =
FLAGS_level0_file_num_compaction_trigger;
options.compression = FLAGS_compression_type;
options.create_if_missing = true;
options.disable_seek_compaction = FLAGS_disable_seek_compaction;
@ -1004,6 +1009,12 @@ int main(int argc, char** argv) {
FLAGS_open_files = leveldb::Options().max_open_files;
FLAGS_max_background_compactions =
leveldb::Options().max_background_compactions;
FLAGS_level0_file_num_compaction_trigger =
leveldb::Options().level0_file_num_compaction_trigger;
FLAGS_level0_slowdown_writes_trigger =
leveldb::Options().level0_slowdown_writes_trigger;
FLAGS_level0_stop_writes_trigger =
leveldb::Options().level0_stop_writes_trigger;
// Compression test code above refers to FLAGS_block_size
FLAGS_block_size = leveldb::Options().block_size;
std::string default_db_path;
@ -1111,6 +1122,9 @@ int main(int argc, char** argv) {
} else if (sscanf(argv[i],"--level0_slowdown_writes_trigger=%d%c",
&n, &junk) == 1) {
FLAGS_level0_slowdown_writes_trigger = n;
} else if (sscanf(argv[i],"--level0_file_num_compaction_trigger=%d%c",
&n, &junk) == 1) {
FLAGS_level0_file_num_compaction_trigger = n;
} else if (strncmp(argv[i], "--compression_type=", 19) == 0) {
const char* ctype = argv[i] + 19;
if (!strcasecmp(ctype, "none"))