If you killed postgreSQL Syslogger BG process what will happened in Postgres server ?

--Check the Process id of syslogger whether it is running or not.

[root@p1 data]# pwd
/opt/PostgreSQL/9.3/data

[root@p1 data]# ls -lrt postmaster*
-rw------- 1 postgres postgres 73 Apr 26 15:10 postmaster.pid
-rw------- 1 postgres postgres 65 Apr 26 15:10 postmaster.opts

[root@p1 data]# cat postmaster.pid 
9590
/opt/PostgreSQL/9.3/data
1493233830
5432
/tmp
*
  5432001   3801089

[root@p1 data]# ps -ef |grep post
postgres  9590     1  0 10:54 pts/1    00:00:00 /opt/PostgreSQL/9.3/bin/postgres -D /opt/PostgreSQL/9.3/data
postgres  9591  9590  0 10:54 ?        00:00:00 postgres: logger process                                    
postgres  9593  9590  0 10:54 ?        00:00:00 postgres: checkpointer process                              
postgres  9594  9590  0 10:54 ?        00:00:00 postgres: writer process                                    
postgres  9595  9590  0 10:54 ?        00:00:00 postgres: wal writer process                                
postgres  9596  9590  0 10:54 ?        00:00:00 postgres: autovacuum launcher process                       
postgres  9597  9590  0 10:54 ?        00:00:00 postgres: archiver process                                  
postgres  9598  9590  0 10:54 ?        00:00:00 postgres: stats collector process    

--Kill the syslogger 

[root@p1 data]# kill -9 9591

[root@p1 data]# kill -9 9591
         
--check the connection nothing will be happened postmaster id will only be varried so postgres server nothing will be go to down its automatically restarted by postgress server when kill the BG process.

[root@p1 data]# ps -ef |grep post
postgres  9590     1  0 10:54 pts/1    00:00:00 /opt/PostgreSQL/9.3/bin/postgres -D /opt/PostgreSQL/9.3/data
postgres  9593  9590  0 10:54 ?        00:00:00 postgres: checkpointer process                              
postgres  9594  9590  0 10:54 ?        00:00:00 postgres: writer process                                    
postgres  9595  9590  0 10:54 ?        00:00:00 postgres: wal writer process                                
postgres  9596  9590  0 10:54 ?        00:00:00 postgres: autovacuum launcher process                       
postgres  9597  9590  0 10:54 ?        00:00:00 postgres: archiver process                                  
postgres  9598  9590  0 10:54 ?        00:00:00 postgres: stats collector process                           
root      9668 25224  0 May07 pts/1    00:00:00 su postgres
postgres  9669  9668  0 May07 pts/1    00:00:00 bash
postgres 10275  9590  0 11:14 ?        00:00:00 postgres: logger process                                    
root     10293  9215  0 11:15 pts/4    00:00:00 grep post
root     15754 15727  0 May08 pts/2    00:00:00 su postgres
postgres 15755 15754  0 May08 pts/2    00:00:00 bash
root     19766 19752  0 May08 pts/3    00:00:00 su postgres
postgres 19767 19766  0 May08 pts/3    00:00:00 bash

--create the table for checking process

postgres=# create table t10(id int);
CREATE TABLE