110421 10:58:17 InnoDB: The InnoDB memory heap is disabled
110421 10:58:17 InnoDB: Mutexes and rw_locks use GCC atomic builtins 110421 10:58:17 InnoDB: Compressed tables use zlib 1.2.3 110421 10:58:17 InnoDB: Initializing buffer pool, size = 2.0G 110421 10:58:18 InnoDB: Completed initialization of buffer pool 110421 10:58:18 InnoDB: highest supported file format is Barracuda.InnoDB: The InnoDB memory heap is disabled 如果使用系统内存分配默认会出现此信息,如果使用其他内存分配可以设置innodb_use_sys_malloc=0来使用指定内存,比如tcmalloc
InnoDB: Mutexes and rw_locks use GCC atomic builtins 如果使用的GCC版本高于4.12,那么互斥量(mutex)和读写锁(read/write lock)可以通过GCC内置的atomic_memory_access功能来实现,并打印这些信息 InnoDB: highest supported file format is Barracuda. 支持Barracuda文件格式