innoDB: page_cleaner: 1000ms intended loop took 37809ms. The settings might not be optimal. (flushed=736 and evicted=2825, during the time.)
SET GLOBAL innodb_lru_scan_depth=256; SHOW GLOBAL VARIABLES LIKE 'innodb_lru_scan_depth';
SET GLOBAL innodb_lru_scan_depth=256; SHOW GLOBAL VARIABLES LIKE 'innodb_lru_scan_depth';