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F.2.25. Replication latency very high

Last Updated: 2013-11-01

Condition or Error

The latency of updates on the slaves is very high


  • First the reason and location of the delay should be identified. It is possible for replication data to have been replicated quickly, but applying the data changes is taking a long time. Using row-based replication may increase the latency due to the increased quantity of data that must be transferred.


  • Check the replication format:

    shell> grep binlog_format /etc/my.cnf

    Slow slaves can be the cause, but it may require some configuration changes.