sysout error log being truncated

We run postgres 9.4.  We are moving to a new datacenter and are doing the requisite parallel performance testing.

One of our transactions is a queue processor that generates a ton of insert statements per run of this transaction - as many as 1000 per run.

What has happened in new datacenter is that these transactions - while running correctly and completely - do not write all the insert statements

to our sysout log - only some.  Here are some of the postgres configurations for your reference:

 

 syslog_facility = 'LOCAL0'          

#syslog_ident = 'postgres'

# This is only relevant when logging to eventlog (win32):

#event_source = 'PostgreSQL'

# - When to Log -

#client_min_messages = notice       

log_min_messages = info             

log_min_error_statement = info    

log_min_duration_statement = 4000    

# - What to Log -

#debug_print_parse = off

#debug_print_rewritten = off

#debug_print_plan = off

#debug_pretty_print = on

#log_checkpoints = off

#log_connections = off

#log_disconnections = off

#log_duration = off

#log_error_verbosity = default        

#log_hostname = off

log_line_prefix =  '%u@%h:%d '                                    

#log_lock_waits = off                 

log_statement = 'ddl'                  

#log_temp_files = -1                  

 log_timezone = 'US/Eastern'

The only other difference I can report is the minor version

  CURRENT PRODUCTION: 9.4.8

  NEW DATACENTER:         9.4.21

  
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