2020-04-01 12:29:54 139876903974656 [Note] /usr/sbin/mysqld: Normal shutdown
2020-04-01 12:29:54 139876903974656 [Note] Event Scheduler: Purging the queue. 0 events
2020-04-01 12:29:54 139876355794688 [Note] InnoDB: FTS optimize thread exiting.
2020-04-01 12:29:54 139876903974656 [Note] InnoDB: Starting shutdown...
2020-04-01 12:29:55 139876903974656 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2020-04-01 12:29:57 139876903974656 [Note] InnoDB: Shutdown completed; log sequence number 10241040
2020-04-01 12:29:57 139876903974656 [Note] /usr/sbin/mysqld: Shutdown complete

2020-04-01 12:30:09 140560030616960 [Note] InnoDB: innodb_empty_free_list_algorithm has been changed to legacy because of small buffer pool size. In order to use backoff, increase buffer pool at least up to 20MB.

2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: The InnoDB memory heap is disabled
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Compressed tables use zlib 1.2.8
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Using Linux native AIO
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Using SSE crc32 instructions
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Completed initialization of buffer pool
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Highest supported file format is Barracuda.
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: 128 rollback segment(s) are active.
2020-04-01 12:30:09 140560030616960 [Note] InnoDB: Waiting for purge to start
2020-04-01 12:30:09 140560030616960 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.46-86.2 started; log sequence number 10241040
2020-04-01 12:30:09 140559364650752 [Note] InnoDB: Dumping buffer pool(s) not yet started
2020-04-01 12:30:09 140560030616960 [Note] Plugin 'FEEDBACK' is disabled.
2020-04-01 12:30:09 140560030616960 [Note] Server socket created on IP: '::'.
2020-04-01 12:30:09 140560030616960 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.1.44-MariaDB-0+deb9u1'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  Debian 9.11