Version 9.6.2
Checkpoint on primary server:
[ 2017-04-17 17:23:25 BRT] @ LOG: checkpoint complete: wrote 19436 buffers (2.4%); 0 transaction log file(s) added, 2 removed, 7 recycled; write=149.506 s, sync=0.310 s, total=149.958 s; sync files=370, longest=0.012 s, average=0.000 s; distance=133971 kB, estimate=226109 kB
thanks,