How to make slave is in sync with master in tungsten replication?

Question

we are using Tungsten master to slave replication in MySQL. we have configured this setup very long back. from last week onwards slave is in lagging with master around 5 to 10 binary files. we have checked the N/W connectivity it is fine b/w master and slave.

we are not understanding why lagging is keep on increase?

How to make slave is in sync with master in tungsten replication?