I saw on the slave Seconds_Behind_Master increasing.But the master did not perform large transactions.
This is ‘show slave status \G’ part of the results：
when I run ‘show full processlist’ I can see UPDATE ,and the id is constantly changing.There is no data written in addition to master,but the value of Seconds_Behind_Master is increasing.
Master percona server version is 5.6.36-82.0-log,system version is centos7.
Slave percona server version is 5.6.36-82.1-log,system version is centos5.
Tell me the way to check,Please.