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recommended rocksdb tuning

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Former-commit-id: 2a634365f901968f9758d2d362f211b8e0fddc2a
This commit is contained in:
John Sully 2019-12-24 02:22:47 -05:00
parent fb2d81395d
commit 5c657aefcb
1 changed files with 24 additions and 5 deletions
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29
src/storage/rocksdbfactory.cpp
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@ -1,4 +1,7 @@
#include "rocksdb.h"
#include <rocksdb/filter_policy.h>
#include <rocksdb/table.h>
#include <rocksdb/utilities/options_util.h>
class RocksDBStorageFactory : public IStorageFactory
{
@ -30,16 +33,32 @@ RocksDBStorageFactory::RocksDBStorageFactory(const char *dbfile, int dbnum)
std::vector<rocksdb::ColumnFamilyDescriptor> veccoldesc;
veccoldesc.push_back(rocksdb::ColumnFamilyDescriptor(rocksdb::kDefaultColumnFamilyName, rocksdb::ColumnFamilyOptions())); // ignore default col family
for (int idb = 0; idb < dbnum; ++idb)
{
veccoldesc.push_back(rocksdb::ColumnFamilyDescriptor(std::to_string(idb), rocksdb::ColumnFamilyOptions()));
}
rocksdb::Options options;
options.create_if_missing = true;
options.create_missing_column_families = true;
rocksdb::DB *db = nullptr;
options.max_background_compactions = 4;
options.max_background_flushes = 2;
options.bytes_per_sync = 1048576;
options.compaction_pri = rocksdb::kMinOverlappingRatio;
rocksdb::BlockBasedTableOptions table_options;
table_options.block_size = 16 * 1024;
table_options.cache_index_and_filter_blocks = true;
table_options.pin_l0_filter_and_index_blocks_in_cache = true;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
table_options.filter_policy.reset(rocksdb::NewBloomFilterPolicy(10, false));
options.table_factory.reset(
rocksdb::NewBlockBasedTableFactory(table_options));
for (int idb = 0; idb < dbnum; ++idb)
{
rocksdb::ColumnFamilyOptions cf_options(options);
cf_options.level_compaction_dynamic_level_bytes = true;
veccoldesc.push_back(rocksdb::ColumnFamilyDescriptor(std::to_string(idb), cf_options));
}
std::vector<rocksdb::ColumnFamilyHandle*> handles;
status = rocksdb::DB::Open(options, dbfile, veccoldesc, &handles, &db);