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-rw-r--r--src/blockchain_db/lmdb/db_lmdb.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp
index 3979a5edf..c44f7ad25 100644
--- a/src/blockchain_db/lmdb/db_lmdb.cpp
+++ b/src/blockchain_db/lmdb/db_lmdb.cpp
@@ -34,6 +34,7 @@
#include <cstring> // memcpy
#include <random>
+#include "common/util.h"
#include "cryptonote_basic/cryptonote_format_utils.h"
#include "crypto/crypto.h"
#include "profile_tools.h"
@@ -1129,6 +1130,11 @@ void BlockchainLMDB::open(const std::string& filename, const int db_flags)
if ((result = mdb_env_set_maxdbs(m_env, 20)))
throw0(DB_ERROR(lmdb_error("Failed to set max number of dbs: ", result).c_str()));
+ int threads = tools::get_max_concurrency();
+ if (threads > 110 && /* maxreaders default is 126, leave some slots for other read processes */
+ (result = mdb_env_set_maxreaders(m_env, threads+16)))
+ throw0(DB_ERROR(lmdb_error("Failed to set max number of readers: ", result).c_str()));
+
size_t mapsize = DEFAULT_MAPSIZE;
if (db_flags & DBF_FAST)