From 7c5abdc3a3059c4f013bfa63a897171540b34ee5 Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Sun, 6 Mar 2016 09:18:51 +0000 Subject: Use DUPFIXED for output_keys Saves another 90MB on 200000 block import. Had to bring back compare_uint64 for this, but it's safe since this table is always 64-bit aligned. --- src/blockchain_db/lmdb/db_lmdb.cpp | 60 +++++++++++++++++++++++--------------- 1 file changed, 37 insertions(+), 23 deletions(-) diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp index ea4a111d4..cd35286c5 100644 --- a/src/blockchain_db/lmdb/db_lmdb.cpp +++ b/src/blockchain_db/lmdb/db_lmdb.cpp @@ -108,6 +108,13 @@ private: std::unique_ptr data; }; +int compare_uint64(const MDB_val *a, const MDB_val *b) +{ + const uint64_t va = *(const uint64_t *)a->mv_data; + const uint64_t vb = *(const uint64_t *)b->mv_data; + return (va < vb) ? -1 : va > vb; +} + int compare_uint8(const MDB_val *a, const MDB_val *b) { const uint8_t va = *(const uint8_t*)a->mv_data; @@ -215,6 +222,11 @@ typedef struct txindex { tx_data_t data; } txindex; +typedef struct outkey { + uint64_t num_outputs; + output_data_t data; +} outkey; + std::atomic mdb_txn_safe::num_active_txns{0}; std::atomic_flag mdb_txn_safe::creation_gate = ATOMIC_FLAG_INIT; @@ -741,14 +753,14 @@ void BlockchainLMDB::add_output(const crypto::hash& tx_hash, if (tx_output.target.type() == typeid(txout_to_key)) { - output_data_t od; - od.pubkey = boost::get < txout_to_key > (tx_output.target).key; - od.unlock_time = unlock_time; - od.height = m_height; + outkey ok; + ok.num_outputs = m_num_outputs; + ok.data.pubkey = boost::get < txout_to_key > (tx_output.target).key; + ok.data.unlock_time = unlock_time; + ok.data.height = m_height; - MDB_val_copy data(od); - //MDB_val_copy val_pubkey(boost::get(tx_output.target).key); - if (mdb_cursor_put(m_cur_output_keys, &k, &data, MDB_APPEND)) + MDB_val data = {sizeof(ok), (void *)&ok}; + if (mdb_cursor_put(m_cur_output_keys, (MDB_val *)&zerokval, &data, MDB_APPENDDUP)) throw0(DB_ERROR("Failed to add output pubkey to db transaction")); } else @@ -848,7 +860,7 @@ void BlockchainLMDB::remove_output(const uint64_t& out_index, const uint64_t amo throw1(DB_ERROR("Error adding removal of output tx hash to db transaction")); } - result = mdb_del(*m_write_txn, m_output_keys, &k, NULL); + result = mdb_del(*m_write_txn, m_output_keys, (MDB_val *)&zerokval, &k); if (result == MDB_NOTFOUND) { LOG_PRINT_L0("Unexpected: global output index not found in m_output_keys"); @@ -1088,18 +1100,18 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags) lmdb_db_open(txn, LMDB_BLOCKS, MDB_INTEGERKEY | MDB_CREATE, m_blocks, "Failed to open db handle for m_blocks"); lmdb_db_open(txn, LMDB_BLOCK_INFO, MDB_INTEGERKEY | MDB_CREATE, m_block_info, "Failed to open db handle for m_block_info"); - lmdb_db_open(txn, LMDB_BLOCK_HEIGHTS, MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_heights, "Failed to open db handle for m_block_heights"); + lmdb_db_open(txn, LMDB_BLOCK_HEIGHTS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_heights, "Failed to open db handle for m_block_heights"); lmdb_db_open(txn, LMDB_TXS, MDB_INTEGERKEY | MDB_CREATE, m_txs, "Failed to open db handle for m_txs"); - lmdb_db_open(txn, LMDB_TX_INDICES, MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_tx_indices, "Failed to open db handle for m_tx_indices"); + lmdb_db_open(txn, LMDB_TX_INDICES, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_tx_indices, "Failed to open db handle for m_tx_indices"); lmdb_db_open(txn, LMDB_TX_OUTPUTS, MDB_INTEGERKEY | MDB_CREATE, m_tx_outputs, "Failed to open db handle for m_tx_outputs"); lmdb_db_open(txn, LMDB_OUTPUT_TXS, MDB_INTEGERKEY | MDB_CREATE, m_output_txs, "Failed to open db handle for m_output_txs"); lmdb_db_open(txn, LMDB_OUTPUT_INDICES, MDB_INTEGERKEY | MDB_CREATE, m_output_indices, "Failed to open db handle for m_output_indices"); lmdb_db_open(txn, LMDB_OUTPUT_AMOUNTS, MDB_INTEGERKEY | MDB_INTEGERDUP | MDB_DUPSORT | MDB_DUPFIXED | MDB_CREATE, m_output_amounts, "Failed to open db handle for m_output_amounts"); - lmdb_db_open(txn, LMDB_OUTPUT_KEYS, MDB_INTEGERKEY | MDB_CREATE, m_output_keys, "Failed to open db handle for m_output_keys"); + lmdb_db_open(txn, LMDB_OUTPUT_KEYS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_output_keys, "Failed to open db handle for m_output_keys"); - lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for m_spent_keys"); + lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for m_spent_keys"); lmdb_db_open(txn, LMDB_HF_STARTING_HEIGHTS, MDB_CREATE, m_hf_starting_heights, "Failed to open db handle for m_hf_starting_heights"); lmdb_db_open(txn, LMDB_HF_VERSIONS, MDB_INTEGERKEY | MDB_CREATE, m_hf_versions, "Failed to open db handle for m_hf_versions"); @@ -1109,6 +1121,7 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags) mdb_set_dupsort(txn, m_spent_keys, compare_hash32); mdb_set_dupsort(txn, m_block_heights, compare_hash32); mdb_set_dupsort(txn, m_tx_indices, compare_hash32); + mdb_set_dupsort(txn, m_output_keys, compare_uint64); mdb_set_compare(txn, m_hf_starting_heights, compare_uint8); mdb_set_compare(txn, m_properties, compare_string); @@ -1138,9 +1151,8 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags) // terminate. if(m_height > 0) { - MDB_val_copy k(0); MDB_val v; - auto get_result = mdb_get(txn, m_output_keys, &k, &v); + auto get_result = mdb_get(txn, m_output_keys, (MDB_val *)&zerokval, &v); if(get_result != MDB_SUCCESS) { txn.abort(); @@ -1149,7 +1161,7 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags) } // LOG_PRINT_L0("Output keys size: " << v.mv_size); - if(v.mv_size != sizeof(output_data_t)) + if(v.mv_size != sizeof(outkey)) compatible = false; } @@ -1898,14 +1910,15 @@ output_data_t BlockchainLMDB::get_output_key(const uint64_t &global_index) const const mdb_txn_cursors *m_cursors = m_write_txn ? &m_wcursors : &m_tinfo->m_ti_rcursors; RCURSOR(output_keys); - MDB_val_copy k(global_index); - MDB_val v; - auto get_result = mdb_cursor_get(m_cur_output_keys, &k, &v, MDB_SET); + outkey ok = {global_index}; + MDB_val v = {sizeof(ok), (void *)&ok}; + auto get_result = mdb_cursor_get(m_cur_output_keys, (MDB_val *)&zerokval, &v, MDB_GET_BOTH); if (get_result == MDB_NOTFOUND) throw1(OUTPUT_DNE("Attempting to get output pubkey by global index, but key does not exist")); else if (get_result) throw0(DB_ERROR("Error attempting to retrieve an output pubkey from the db")); - output_data_t ret = *(const output_data_t *) v.mv_data; + outkey *okp = (outkey *)v.mv_data; + output_data_t ret = okp->data; TXN_POSTFIX_RDONLY(); return ret; } @@ -2684,16 +2697,17 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector k(index); - MDB_val v; + outkey ok = {index}; + MDB_val v = {sizeof(ok), (void *)&ok}; - auto get_result = mdb_cursor_get(m_cur_output_keys, &k, &v, MDB_SET); + auto get_result = mdb_cursor_get(m_cur_output_keys, (MDB_val *)&zerokval, &v, MDB_GET_BOTH); if (get_result == MDB_NOTFOUND) throw1(OUTPUT_DNE("Attempting to get output pubkey by global index, but key does not exist")); else if (get_result) throw0(DB_ERROR("Error attempting to retrieve an output pubkey from the db")); - output_data_t data = *(const output_data_t *) v.mv_data; + outkey *okp = (outkey *)v.mv_data; + output_data_t data = okp->data; outputs.push_back(data); } -- cgit v1.2.3