diff --git a/dbms/include/DB/Interpreters/Settings.h b/dbms/include/DB/Interpreters/Settings.h
index 773b11b025e..d46e82c6bc2 100644
--- a/dbms/include/DB/Interpreters/Settings.h
+++ b/dbms/include/DB/Interpreters/Settings.h
@@ -45,8 +45,6 @@ struct Settings
 	bool extremes;
 	/// Использовать ли кэш разжатых блоков.
 	bool use_uncompressed_cache;
-	/// Минимальное количество записанных строк, после которого следует делать fsync или sync. 0 - не делать вообще.
-	size_t min_rows_to_sync;
 
 	/// Всевозможные ограничения на выполнение запроса.
 	Limits limits;
@@ -66,8 +64,7 @@ struct Settings
 		poll_interval(DBMS_DEFAULT_POLL_INTERVAL),
 		distributed_connections_pool_size(DBMS_DEFAULT_DISTRIBUTED_CONNECTIONS_POOL_SIZE),
 		connections_with_failover_max_tries(DBMS_CONNECTION_POOL_WITH_FAILOVER_DEFAULT_MAX_TRIES),
-		sign_rewrite(false), extremes(false), use_uncompressed_cache(true),
-		min_rows_to_sync(1000000)
+		sign_rewrite(false), extremes(false), use_uncompressed_cache(true)
 	{
 	}
 
diff --git a/dbms/include/DB/Storages/MergeTree/MergeTreeBlockOutputStream.h b/dbms/include/DB/Storages/MergeTree/MergeTreeBlockOutputStream.h
index 0183fa3f0b0..f301c0ade2a 100644
--- a/dbms/include/DB/Storages/MergeTree/MergeTreeBlockOutputStream.h
+++ b/dbms/include/DB/Storages/MergeTree/MergeTreeBlockOutputStream.h
@@ -158,16 +158,8 @@ private:
 			writeData(part_tmp_path, column.name, *column.type, *column.column, offset_columns);
 		}
 
-		/// Если надо - попросим ОС сбросить данные на диск.
-		size_t min_rows_to_sync = storage.context.getSettings().min_rows_to_sync;
-		if (min_rows_to_sync && rows >= min_rows_to_sync)
-		{
-			LOG_TRACE(storage.log, "sync()");
-			::sync();	/// Если вызывать fsync для каждого файла по отдельности, то всё больше тормозит.
-		}
-		
 		LOG_TRACE(storage.log, "Renaming.");
-		
+
 		/// Переименовываем кусок.
 		Poco::File(part_tmp_path).renameTo(part_res_path);
 		
diff --git a/dbms/include/DB/Storages/MergeTree/MergedBlockOutputStream.h b/dbms/include/DB/Storages/MergeTree/MergedBlockOutputStream.h
index 7b7b568e9b9..bf6df8cb7da 100644
--- a/dbms/include/DB/Storages/MergeTree/MergedBlockOutputStream.h
+++ b/dbms/include/DB/Storages/MergeTree/MergedBlockOutputStream.h
@@ -17,7 +17,7 @@ class MergedBlockOutputStream : public IBlockOutputStream
 public:
 	MergedBlockOutputStream(StorageMergeTree & storage_,
 		UInt16 min_date, UInt16 max_date, UInt64 min_part_id, UInt64 max_part_id, UInt32 level)
-		: storage(storage_), marks_count(0), index_offset(0), total_rows(0)
+		: storage(storage_), marks_count(0), index_offset(0)
 	{
 		part_name = storage.getPartName(
 			DayNum_t(min_date), DayNum_t(max_date),
@@ -37,7 +37,6 @@ public:
 	void write(const Block & block)
 	{
 		size_t rows = block.rows();
-		total_rows += rows;
 		
 		/// Сначала пишем индекс. Индекс содержит значение PK для каждой index_granularity строки.
 		typedef std::vector<const ColumnWithNameAndType *> PrimaryColumns;
@@ -87,14 +86,6 @@ public:
 		if (marks_count == 0)
 			throw Exception("Empty part", ErrorCodes::LOGICAL_ERROR);
 
-		/// Если надо - попросим ОС сбросить данные на диск.
-		size_t min_rows_to_sync = storage.context.getSettings().min_rows_to_sync;
-		if (min_rows_to_sync && total_rows >= min_rows_to_sync)
-		{
-			LOG_TRACE(storage.log, "sync()");
-			::sync();	/// Если вызывать fsync для каждого файла по отдельности, то всё больше тормозит.
-		}
-		
 		/// Переименовываем кусок.
 		Poco::File(part_tmp_path).renameTo(part_res_path);
 		
@@ -140,9 +131,6 @@ private:
 	
 	/// Смещение до первой строчки блока, для которой надо записать индекс.
 	size_t index_offset;
-
-	/// Общее количество записанных строк.
-	size_t total_rows;
 	
 	typedef std::set<std::string> OffsetColumns;
 	
diff --git a/dbms/src/Interpreters/Settings.cpp b/dbms/src/Interpreters/Settings.cpp
index e4ab1288e36..e5cfce18de7 100644
--- a/dbms/src/Interpreters/Settings.cpp
+++ b/dbms/src/Interpreters/Settings.cpp
@@ -32,7 +32,6 @@ void Settings::set(const String & name, const Field & value)
 	else if (name == "sign_rewrite")		sign_rewrite 		= safeGet<UInt64>(value);
 	else if (name == "extremes")			extremes 			= safeGet<UInt64>(value);
 	else if (name == "use_uncompressed_cache") use_uncompressed_cache = safeGet<UInt64>(value);
-	else if (name == "min_rows_to_sync")	min_rows_to_sync 	= safeGet<UInt64>(value);
 	else if (name == "profile") 			setProfile(get<const String &>(value));
 	else if (!limits.trySet(name, value))
 		throw Exception("Unknown setting " + name, ErrorCodes::UNKNOWN_SETTING);
@@ -56,8 +55,7 @@ void Settings::set(const String & name, ReadBuffer & buf)
 		|| name == "connections_with_failover_max_tries"
 		|| name == "sign_rewrite"
 		|| name == "extremes"
-		|| name == "use_uncompressed_cache"
-		|| name == "min_rows_to_sync")
+		|| name == "use_uncompressed_cache")
 	{
 		UInt64 value = 0;
 		readVarUInt(value, buf);
@@ -91,8 +89,7 @@ void Settings::set(const String & name, const String & value)
 		|| name == "connections_with_failover_max_tries"
 		|| name == "sign_rewrite"
 		|| name == "extremes"
-		|| name == "use_uncompressed_cache"
-		|| name == "min_rows_to_sync")
+		|| name == "use_uncompressed_cache")
 	{
 		set(name, parse<UInt64>(value));
 	}
@@ -153,7 +150,6 @@ void Settings::serialize(WriteBuffer & buf) const
 	writeStringBinary("sign_rewrite", buf);							writeVarUInt(sign_rewrite, buf);
 	writeStringBinary("extremes", buf);								writeVarUInt(extremes, buf);
 	writeStringBinary("use_uncompressed_cache", buf);				writeVarUInt(use_uncompressed_cache, buf);
-	writeStringBinary("min_rows_to_sync", buf);						writeVarUInt(min_rows_to_sync, buf);
 
 	limits.serialize(buf);