MariaDB start is slow

2017-04-27 15:48:10 139983869696032 [Warning] option 'general_log': boolean value 'xxxxx.log' wasn't recognized. Set to OFF.

2017-04-27 15:48:10 139983869696032 [Warning] 'THREAD_CONCURRENCY' is deprecated and will be removed in a future release.

2017-04-27 15:48:10 139983869696032 [Note] /usr/libexec/mysqld (mysqld 10.1.22-MariaDB) starting as process 19851 ...

2017-04-27 15:48:12 7f5088d3d820 InnoDB: Warning: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator.

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: Using mutexes to ref count buffer pool pages

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: The InnoDB memory heap is disabled

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: GCC builtin __sync_synchronize() is used for memory barrier

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: Compressed tables use zlib 1.2.3

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: Using Linux native AIO

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: Using SSE crc32 instructions

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: Initializing buffer pool, size = 2.0G

2017-04-27 15:48:12 139983869696032 [Note] InnoDB: Completed initialization of buffer pool

2017-04-27 15:48:13 139983869696032 [Note] InnoDB: Highest supported file format is Barracuda.

2017-04-27 15:58:24 139983869696032 [Note] InnoDB: 128 rollback segment(s) are active.

2017-04-27 15:58:24 139983869696032 [Note] InnoDB: Waiting for purge to start

2017-04-27 15:58:24 139983869696032 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.35-80.0 started; log sequence number 657936019547

2017-04-27 15:58:25 139980747806464 [Note] InnoDB: Dumping buffer pool(s) not yet started

2017-04-27 15:58:25 139983869696032 [Note] Plugin 'FEEDBACK' is disabled.

2017-04-27 15:58:25 139983869696032 [Note] Server socket created on IP: '::'.

2017-04-27 15:58:25 139983869696032 [Note] /usr/libexec/mysqld: ready for connections.

Version: '10.1.22-MariaDB'  socket: 'xxxxx.sock'  port: 3306  MariaDB Server