title: Too many WAL archive file created in postgres
body: <p>I have configured file base - log shipping replication in postgreSql 9.4. I have default checkpint after every 5min and WAL size of 16mb. However, postgreSql send 16mb of file after every 1sec. Is this normal? I feel it's too much of network traffic. Is there a way to improve this apart from zipping logs? How could I control log shipping frequency ?
  Thanks in advance !</p>
  
  <pre><code>sent 16779372 bytes  received 31 bytes  11186268.67 bytes/sec
  total size is 16777216  speedup is 1.00
  sending incremental file list
  000000010000002D00000065
  
  sent 16779372 bytes  received 31 bytes  11186268.67 bytes/sec
  total size is 16777216  speedup is 1.00
  sending incremental file list
  000000010000002D00000066
  </code></pre>