[pgpool-general: 4261] pgpool doesn't split the connections between the backends

[the Rat]

 Hello Everyone,  
  Happy holidays!  Can anyone assist on how to set-up pgpool to distribute connections between the backend database nodes , in other words to split the connection count between them. Currently it seems that every connection to pgpool in turn is a connection to every database backend.  
  Our setup is:  
 
 
 
 /----- postgresql - master  pgpool--------postgresql - slave 1  
 
 
 
 \-----postgresql - slave 2  
  When I check the connections I get 60 to pgpool from the Tomcat client which pools that much and 60 to each of the database servers.  How can I configure it so I have 
20 per backend database node.  
  As this would be a really heavy loaded system with many DB connections we want to limit the connections to not more than 900 per server, as postgresql advise not to have more than 1000 connections per database, because performance radically drops.  When the system gets under load and the connections reach 900 the backends start to reports "too many clients already", which triggers a "degeneration" of the node, which in pgpool terms means to take out the node from balancing and mark it with status "3".  Isn't there a way to just keep 300 connections per server and a total of 900 from the client to pgpool only?  
  I can send my config if that helps:  
  
  listen_addresses = '0.0.0.0'  port = 9999  socket_dir = '/tmp'  listen_backlog_multiplier = 2  pcp_listen_addresses = '*'  pcp_port = 9898  pcp_socket_dir = '/tmp'  backend_hostname0 = '192.168.10.38'  backend_port0 = 5432  backend_weight0 = 1  backend_data_directory0 = '/var/lib/pgsql/9.4/data'  backend_flag0 = 'ALLOW_TO_FAILOVER'  backend_hostname1 = '192.168.10.40'  backend_port1 = 5432  backend_weight1 = 1  backend_data_directory1 = '/var/lib/pgsql/9.4/data'  backend_flag1 = 'ALLOW_TO_FAILOVER'  backend_hostname2 = '192.168.10.41'  backend_port2 = 5432  backend_weight2 = 1  backend_data_directory2 = '/var/lib/pgsql/9.4/data'  backend_flag2 = 'ALLOW_TO_FAILOVER'  enable_pool_hba = on  pool_passwd = 'pool_passwd'  authentication_timeout = 60  ssl = on  ssl_key = './server.key'  ssl_cert = './server.crt'  num_init_children = 3000  max_pool = 2  child_life_time = 600  child_max_connections = 0  connection_life_time = 0  client_idle_limit = 0  log_destination = 'stderr syslo
 g'  log_line_prefix = '%t: pid %p: ' 
 # printf-style string to output at beginning of each log line.  log_connections = off  log_hostname = off  log_statement = off  log_per_node_statement = off  log_standby_delay = 'none'  syslog_facility = 'LOCAL0'  syslog_ident = 'pgpool'  debug_level = 1  log_error_verbosity = verbose 
 
 
 
 
# terse, default, or verbose messages  pid_file_name = '/var/run/pgpool/pgpool.pid'  logdir = '/var/log/pgpool'  connection_cache = off  reset_query_list = 'ABORT; DISCARD ALL'  replication_mode = off  replicate_select = off  insert_lock = on  lobj_lock_table = ''  replication_stop_on_mismatch = off  failover_if_affected_tuples_mismatch = off  load_balance_mode = on  ignore_leading_white_space = on  white_function_list = ''  black_function_list = 'nextval,setval,nextval,setval'  database_redirect_preference_list = ''  app_name_redirect_preference_list = ''  allow_sql_comments = off  master_slave_mode = on  master_slave_sub_mode = 'stream'  sr_check_period = 0  sr_check_user = 'postgres'  sr_check_password = 'hiddenpass'  delay_threshold = 1000  follow_master_command = '/usr/local/pgsql/scripts/followmaster.sh %d %h %P %H 9898'  health_check_period = 5  health_check_timeout = 20  health_check_user = 'postgres'  health_check_password = 'hiddenpass'  health_check_max_retries = 3
   health_check_retry_delay = 2  connect_timeout = 10000  failover_command = '/usr/local/pgsql/scripts/failover.sh %d %H /var/lib/pgsql/9.4/data/mastertrigger.txt'  failback_command = '/usr/local/pgsql/scripts/failback.sh %d %M'  fail_over_on_backend_error = off  search_primary_node_timeout = 10  recovery_user = 'postgres'  recovery_password = ''  recovery_1st_stage_command = ''  recovery_2nd_stage_command = ''  recovery_timeout = 90  client_idle_limit_in_recovery = 0  use_watchdog = on  trusted_servers = '192.168.10.43,192.168.10.44'  ping_path = '/bin'  wd_hostname = '192.168.10.43'  wd_port = 9000  wd_authkey = ''  delegate_IP = '192.168.10.100'  ifconfig_path = '/usr/bin'  if_up_cmd = 'sudo /sbin/ifconfig 
eth0:0 inet $_IP_$ netmask 255.255.255.0'  if_down_cmd = 'sudo /sbin/ifconfig eth0:0 
down'  arping_path = '/usr/bin' 
 
 
 
 
 # arping command path  arping_cmd = 'sudo /usr/sbin/arping -I eth0 -U $_IP_$ -w 1'  clear_memqcache_on_escalation = on  wd_escalation_command = ''  wd_lifecheck_method = 'heartbeat'  wd_interval = 10  wd_heartbeat_port = 9694  wd_heartbeat_keepalive = 2  wd_heartbeat_deadtime = 30  heartbeat_destination0 = '192.168.10.44'  heartbeat_destination_port0 = 9694  heartbeat_device0 = 'eth0'  wd_life_point = 3  wd_lifecheck_query = 'SELECT 1'  wd_lifecheck_dbname = 'template1'  wd_lifecheck_user = 'postgres'  wd_lifecheck_password = 'hiddenpass'  other_pgpool_hostname0 = '192.168.10.44'  other_pgpool_port0 = 9999  other_wd_port0 = 9000  relcache_expire = 0  relcache_size = 256  check_temp_table = on  check_unlogged_table = on  memory_cache_enabled = off  memqcache_method = 'shmem'  memqcache_memcached_host = 'localhost'  memqcache_memcached_port = 11211  memqcache_total_size = 67108864  memqcache_max_num_cache = 1000000  memqcache_expire = 0  memqcache_auto_cache_invalidation = on 
  memqcache_maxcache = 409600  memqcache_cache_block_size = 1048576  memqcache_oiddir = '/var/log/pgpool/oiddir'  white_memqcache_table_list = ''  black_memqcache_table_list = ''  
 
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