Hi Jeff,
checkpoint message on standby node:
[ 2017-04-17 17:21:56 BRT] @ LOG: restartpoint complete: wrote 21475 buffers (2.6%); 0 transaction log file(s) added, 0 removed, 0 recycled; write=149.816 s, sync=0.064 s, total=149.890 s; sync files=314, longest=0.002 s, average=0.000 s; distance=145449 kB, estimate=236346 kB
[ 2017-04-17 17:21:56 BRT] @ LOG: recovery restart point at 126/A7072A88
[ 2017-04-17 17:21:56 BRT] @ DETAIL: last completed transaction was at log time 2017-04-17 17:21:02.289164-03