title: Postgresql Logger Process
body: <p>I'm trying to determine if Postgres 9.3 still has a logger process.  It isn't referenced anywhere in the "PostgreSQL 9.3.4 Documentation".  And I can't find it in my cluster's process list (see below).  Also, does anyone know of a good general overview the memory structures in 9.3?</p>
  
  <pre>
  postgres 21397     1  0 20:51 pts/1    00:00:00 /opt/PostgreSQL/9.3/bin/postgres
  postgres 21399 21397  0 20:51 ?        00:00:00 postgres: checkpointer process
  postgres 21400 21397  0 20:51 ?        00:00:00 postgres: writer process
  postgres 21401 21397  0 20:51 ?        00:00:00 postgres: wal writer process
  postgres 21402 21397  0 20:51 ?        00:00:00 postgres: autovacuum launcher process
  postgres 21403 21397  0 20:51 ?        00:00:00 postgres: archiver process last was 0001000004000092
  postgres 21404 21397  0 20:51 ?        00:00:00 postgres: stats collector process
  </pre>
  
  <p>Thanks
  Jim</p>