When you run a Postgres database and check all the processes with ps
you can see comments which most likely are neither executing program name, nor its parameters. What are they?
$ ps ax | grep [p]ostgres:
1066 ? Ss 0:00 postgres: checkpointer process
1067 ? Ss 0:00 postgres: writer process
1068 ? Ss 0:00 postgres: wal writer process
1069 ? Ss 0:00 postgres: autovacuum launcher process
1070 ? Ss 0:00 postgres: stats collector process
I am not sure if this is specific to Postgres in any way.