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Some RocksDB configuration #38

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Some RocksDB configuration #38

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36 changes: 34 additions & 2 deletions constellation/src/storage/rocks_store.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -35,16 +35,38 @@ fn rocks_opts_base() -> Options {
let mut opts = Options::default();
opts.set_level_compaction_dynamic_level_bytes(true);
opts.create_if_missing(true);

let mut bopts = rocksdb::BlockBasedOptions::default();
bopts.set_cache_index_and_filter_blocks(true);
bopts.set_pin_l0_filter_and_index_blocks_in_cache(true);
bopts.set_bloom_filter(10.0, false);
bopts.set_checksum_type(rocksdb::ChecksumType::XXH3);
opts.set_block_based_table_factory(&bopts);

opts.set_min_level_to_compress(1);
opts.set_compression_type(rocksdb::DBCompressionType::Lz4);
opts.set_bottommost_compression_type(rocksdb::DBCompressionType::Zstd); // this probably doesn't work because it hasn't been enabled
// TODO: actually enable the bottommost compression. but after other changes run for a bit in case zstd is cpu- or mem-expensive.

// TODO: this probably doesn't work because it hasn't been enabled
// actually enable the bottommost compression. but after other changes run for a bit in case zstd is cpu- or mem-expensive.
opts.set_bottommost_compression_type(rocksdb::DBCompressionType::Zstd);

opts
}
fn get_db_opts() -> Options {
let mut opts = rocks_opts_base();
opts.create_missing_column_families(true);
opts.increase_parallelism(4); // todo: make configurable if anyone else actually runs a different instance. start at # of cores
// consider doing optimize_level_style_compaction or optimize_universal_style_compaction

let mut bopts = rocksdb::BlockBasedOptions::default();

// TODO: maybe make this a configuration
// TODO: somewhere between 10 - 25% of RAM is probably a good start
let cache = rocksdb::Cache::new_lru_cache(/* 2 GB */ 2_000_000_000);
bopts.set_block_cache(&cache);

opts.set_block_based_table_factory(&bopts);

opts
}
fn get_db_read_opts() -> Options {
Expand Down Expand Up @@ -270,10 +292,20 @@ impl RocksStorage {
// the reverse links:
ColumnFamilyDescriptor::new(TARGET_LINKERS_CF, {
let mut opts = rocks_opts_base();

opts.set_merge_operator_associative(
"merge_op_extend_did_ids",
Self::merge_op_extend_did_ids,
);

let mut bopts = rocksdb::BlockBasedOptions::default();
// bopts.set_block_size(/* 16 KiB */ 16 * 1_024);
bopts.set_pin_top_level_index_and_filter(true);
bopts.set_index_type(rocksdb::BlockBasedIndexType::TwoLevelIndexSearch);
bopts.set_partition_filters(true);

opts.set_block_based_table_factory(&bopts);

opts
}),
// unfortunately we also need forward links to handle deletes
Expand Down
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