postgresql - too long select request -

i have sql query empty table this:

select * test_table 

i use pgadmin after request see how long execute request db. request 12 msec(milliseconds). long empty table. if table have 2k rows request execute 150-200 msec.

what problem? use postgresql 9.6 , have default configuration mean setup postgres tutorial

i don't have similar database on computer or server. setupe postgresql localy , 1 request db. mysql similar request 800 microseconds.

postgresql.conf:

postgresql.conf СВОЙСТВА СТАТИСТИКА Сегодня С Вы загрузили 1 объект 15:15 Текст postgresql.conf Статистики до 28 марта 2017 г. нет  # ----------------------------- # postgresql configuration file # ----------------------------- # # file consists of lines of form: # #   name = value # # (the "=" optional.)  whitespace may used.  comments introduced # "#" anywhere on line.  complete list of parameter names , allowed # values can found in postgresql documentation. # # commented-out settings shown in file represent default values. # re-commenting setting not sufficient revert default value; # need reload server. # # file read on server startup , when server receives sighup # signal.  if edit file on running system, have sighup # server changes take effect, or use "pg_ctl reload".  # parameters, marked below, require server shutdown , restart # take effect. # # parameter can given command-line option server, e.g., # "postgres -c log_connections=on".  parameters can changed @ run time # "set" sql command. # # memory units:  kb = kilobytes        time units:  ms  = milliseconds #                mb = megabytes                     s   = seconds #                gb = gigabytes                     min = minutes #                tb = terabytes                     h   = hours #                                                   d   = days   #------------------------------------------------------------------------------ # file locations #------------------------------------------------------------------------------  # default values of these variables driven -d command-line # option or pgdata environment variable, represented here configdir.  data_directory = '/var/lib/postgresql/9.6/main'     # use data in directory                     # (change requires restart) hba_file = '/etc/postgresql/9.6/main/pg_hba.conf'   # host-based authentication file                     # (change requires restart) ident_file = '/etc/postgresql/9.6/main/pg_ident.conf'   # ident configuration file                     # (change requires restart)  # if external_pid_file not explicitly set, no pid file written. external_pid_file = '/var/run/postgresql/9.6-main.pid'          # write pid file                     # (change requires restart)   #------------------------------------------------------------------------------ # connections , authentication #------------------------------------------------------------------------------  # - connection settings -  listen_addresses = '*'      # ip address(es) listen on;                     # comma-separated list of addresses;                     # defaults 'localhost'; use '*'                     # (change requires restart) port = 5432             # (change requires restart) max_connections = 100           # (change requires restart) #superuser_reserved_connections = 3 # (change requires restart) unix_socket_directories = '/var/run/postgresql' # comma-separated list of directories                     # (change requires restart) #unix_socket_group = ''         # (change requires restart) #unix_socket_permissions = 0777     # begin 0 use octal notation                     # (change requires restart) #bonjour = off              # advertise server via bonjour                     # (change requires restart) #bonjour_name = ''          # defaults computer name                     # (change requires restart)  # - security , authentication -  #authentication_timeout = 1min      # 1s-600s ssl = true              # (change requires restart) #ssl_ciphers = 'high:medium:+3des:!anull' # allowed ssl ciphers                     # (change requires restart) #ssl_prefer_server_ciphers = on     # (change requires restart) #ssl_ecdh_curve = 'prime256v1'      # (change requires restart) ssl_cert_file = '/etc/ssl/certs/ssl-cert-snakeoil.pem'      # (change requires restart) ssl_key_file = '/etc/ssl/private/ssl-cert-snakeoil.key'     # (change requires restart) #ssl_ca_file = ''           # (change requires restart) #ssl_crl_file = ''          # (change requires restart) password_encryption = on #db_user_namespace = off #row_security = on  # gssapi using kerberos #krb_server_keyfile = '' #krb_caseins_users = off  # - tcp keepalives - # see "man 7 tcp" details  #tcp_keepalives_idle = 0        # tcp_keepidle, in seconds;                     # 0 selects system default #tcp_keepalives_interval = 0        # tcp_keepintvl, in seconds;                     # 0 selects system default #tcp_keepalives_count = 0       # tcp_keepcnt;                     # 0 selects system default   #------------------------------------------------------------------------------ # resource usage (except wal) #------------------------------------------------------------------------------  # - memory -  shared_buffers = 128mb          # min 128kb                     # (change requires restart) #huge_pages = try           # on, off, or try                     # (change requires restart) #temp_buffers = 8mb         # min 800kb #max_prepared_transactions = 0      # 0 disables feature                     # (change requires restart) # caution: not advisable set max_prepared_transactions nonzero unless # actively intend use prepared transactions. #work_mem = 4mb             # min 64kb #maintenance_work_mem = 64mb        # min 1mb #replacement_sort_tuples = 150000   # limits use of replacement selection sort #autovacuum_work_mem = -1       # min 1mb, or -1 use maintenance_work_mem #max_stack_depth = 2mb          # min 100kb dynamic_shared_memory_type = posix  # default first option                     # supported operating system:                     #   posix                     #   sysv                     #   windows                     #   mmap                     # use none disable dynamic shared memory  # - disk -  #temp_file_limit = -1           # limits per-process temp file space                     # in kb, or -1 no limit  # - kernel resource usage -  #max_files_per_process = 1000       # min 25                     # (change requires restart) #shared_preload_libraries = ''      # (change requires restart)  # - cost-based vacuum delay -  #vacuum_cost_delay = 0          # 0-100 milliseconds #vacuum_cost_page_hit = 1       # 0-10000 credits #vacuum_cost_page_miss = 10     # 0-10000 credits #vacuum_cost_page_dirty = 20        # 0-10000 credits #vacuum_cost_limit = 200        # 1-10000 credits  # - background writer -  #bgwriter_delay = 200ms         # 10-10000ms between rounds #bgwriter_lru_maxpages = 100        # 0-1000 max buffers written/round #bgwriter_lru_multiplier = 2.0      # 0-10.0 multiplier on buffers scanned/round #bgwriter_flush_after = 512kb       # measured in pages, 0 disables  # - asynchronous behavior -  #effective_io_concurrency = 1       # 1-1000; 0 disables prefetching #max_worker_processes = 8       # (change requires restart) #max_parallel_workers_per_gather = 0    # taken max_worker_processes #old_snapshot_threshold = -1        # 1min-60d; -1 disables; 0 immediate                     # (change requires restart) #backend_flush_after = 0        # measured in pages, 0 disables   #------------------------------------------------------------------------------ # write ahead log #------------------------------------------------------------------------------  # - settings -  #wal_level = minimal            # minimal, replica, or logical                     # (change requires restart) #fsync = on             # flush data disk crash safety                         # (turning off can cause                         # unrecoverable data corruption) #synchronous_commit = on        # synchronization level;                     # off, local, remote_write, remote_apply, or on #wal_sync_method = fsync        # default first option                     # supported operating system:                     #   open_datasync                     #   fdatasync (default on linux)                     #   fsync                     #   fsync_writethrough                     #   open_sync #full_page_writes = on          # recover partial page writes #wal_compression = off          # enable compression of full-page writes #wal_log_hints = off            # full page writes of non-critical updates                     # (change requires restart) #wal_buffers = -1           # min 32kb, -1 sets based on shared_buffers                     # (change requires restart) #wal_writer_delay = 200ms       # 1-10000 milliseconds #wal_writer_flush_after = 1mb       # measured in pages, 0 disables  #commit_delay = 0           # range 0-100000, in microseconds #commit_siblings = 5            # range 1-1000  # - checkpoints -  #checkpoint_timeout = 5min      # range 30s-1d #max_wal_size = 1gb #min_wal_size = 80mb #checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0 #checkpoint_flush_after = 256kb     # measured in pages, 0 disables #checkpoint_warning = 30s       # 0 disables  # - archiving -  #archive_mode = off     # enables archiving; off, on, or                 # (change requires restart) #archive_command = ''       # command use archive logfile segment                 # placeholders: %p = path of file archive                 #               %f = file name                 # e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f' #archive_timeout = 0        # force logfile segment switch after                 # number of seconds; 0 disables   #------------------------------------------------------------------------------ # replication #------------------------------------------------------------------------------  # - sending server(s) -  # set these on master , on standby send replication data.  #max_wal_senders = 0        # max number of walsender processes                 # (change requires restart) #wal_keep_segments = 0      # in logfile segments, 16mb each; 0 disables #wal_sender_timeout = 60s   # in milliseconds; 0 disables  #max_replication_slots = 0  # max number of replication slots                 # (change requires restart) #track_commit_timestamp = off   # collect timestamp of transaction commit                 # (change requires restart)  # - master server -  # these settings ignored on standby server.  #synchronous_standby_names = '' # standby servers provide sync rep                 # number of sync standbys , comma-separated list of application_name                 # standby(s); '*' = #vacuum_defer_cleanup_age = 0   # number of xacts cleanup delayed  # - standby servers -  # these settings ignored on master server.  #hot_standby = off          # "on" allows queries during recovery                     # (change requires restart) #max_standby_archive_delay = 30s    # max delay before canceling queries                     # when reading wal archive;                     # -1 allows indefinite delay #max_standby_streaming_delay = 30s  # max delay before canceling queries                     # when reading streaming wal;                     # -1 allows indefinite delay #wal_receiver_status_interval = 10s # send replies @ least                     # 0 disables #hot_standby_feedback = off     # send info standby prevent                     # query conflicts #wal_receiver_timeout = 60s     # time receiver waits                     # communication master                     # in milliseconds; 0 disables #wal_retrieve_retry_interval = 5s   # time wait before retrying                     # retrieve wal after failed attempt   #------------------------------------------------------------------------------ # query tuning #------------------------------------------------------------------------------  # - planner method configuration -  #enable_bitmapscan = on #enable_hashagg = on #enable_hashjoin = on #enable_indexscan = on #enable_indexonlyscan = on #enable_material = on #enable_mergejoin = on #enable_nestloop = on #enable_seqscan = on #enable_sort = on #enable_tidscan = on  # - planner cost constants -  #seq_page_cost = 1.0            # measured on arbitrary scale #random_page_cost = 4.0         # same scale above #cpu_tuple_cost = 0.01          # same scale above #cpu_index_tuple_cost = 0.005       # same scale above #cpu_operator_cost = 0.0025     # same scale above #parallel_tuple_cost = 0.1      # same scale above #parallel_setup_cost = 1000.0   # same scale above #min_parallel_relation_size = 8mb #effective_cache_size = 4gb  # - genetic query optimizer -  #geqo = on #geqo_threshold = 12 #geqo_effort = 5            # range 1-10 #geqo_pool_size = 0         # selects default based on effort #geqo_generations = 0           # selects default based on effort #geqo_selection_bias = 2.0      # range 1.5-2.0 #geqo_seed = 0.0            # range 0.0-1.0  # - other planner options -  #default_statistics_target = 100    # range 1-10000 #constraint_exclusion = partition   # on, off, or partition #cursor_tuple_fraction = 0.1        # range 0.0-1.0 #from_collapse_limit = 8 #join_collapse_limit = 8        # 1 disables collapsing of explicit                     # join clauses #force_parallel_mode = off   #------------------------------------------------------------------------------ # error reporting , logging #------------------------------------------------------------------------------  # - log -  #log_destination = 'stderr'     # valid values combinations of                     # stderr, csvlog, syslog, , eventlog,                     # depending on platform.  csvlog                     # requires logging_collector on.  # used when logging stderr: #logging_collector = off        # enable capturing of stderr , csvlog                     # log files. required on                     # csvlogs.                     # (change requires restart)  # these used if logging_collector on: #log_directory = 'pg_log'       # directory log files written,                     # can absolute or relative pgdata #log_filename = 'postgresql-%y-%m-%d_%h%m%s.log'    # log file name pattern,                     # can include strftime() escapes #log_file_mode = 0600           # creation mode log files,                     # begin 0 use octal notation #log_truncate_on_rotation = off     # if on, existing log file                     # same name new log file                     # truncated rather appended to.                     # such truncation occurs on                     # time-driven rotation, not on restarts                     # or size-driven rotation.  default                     # off, meaning append existing files                     # in cases. #log_rotation_age = 1d          # automatic rotation of logfiles                     # happen after time.  0 disables. #log_rotation_size = 10mb       # automatic rotation of logfiles                     # happen after log output.                     # 0 disables.  # these relevant when logging syslog: #syslog_facility = 'local0' #syslog_ident = 'postgres' #syslog_sequence_numbers = on #syslog_split_messages = on  # relevant when logging eventlog (win32): #event_source = 'postgresql'  # - when log -  #client_min_messages = notice       # values in order of decreasing detail:                     #   debug5                     #   debug4                     #   debug3                     #   debug2                     #   debug1                     #   log                     #   notice                     #   warning                     #   error  #log_min_messages = warning     # values in order of decreasing detail:                     #   debug5                     #   debug4                     #   debug3                     #   debug2                     #   debug1                     #   info                     #   notice                     #   warning                     #   error                     #   log                     #   fatal                     #   panic  #log_min_error_statement = error    # values in order of decreasing detail:                     #   debug5                     #   debug4                     #   debug3                     #   debug2                     #   debug1                     #   info                     #   notice                     #   warning                     #   error                     #   log                     #   fatal                     #   panic (effectively off)  #log_min_duration_statement = -1    # -1 disabled, 0 logs statements                     # , durations, > 0 logs                     # statements running @ least number                     # of milliseconds   # - 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      # terse, default, or verbose messages #log_hostname = off log_line_prefix = '%m [%p] %q%u@%d '            # special values:                     #   %a = application name                     #   %u = user name                     #   %d = database name                     #   %r = remote host , port                     #   %h = remote host                     #   %p = process id                     #   %t = timestamp without milliseconds                     #   %m = timestamp milliseconds                     #   %n = timestamp milliseconds (as unix epoch)                     #   %i = command tag                     #   %e = sql state                     #   %c = session id                     #   %l = session line number                     #   %s = session start timestamp                     #   %v = virtual transaction id                     #   %x = transaction id (0 if none)                     #   %q = stop here in non-session                     #        processes                     #   %% = '%'                     # e.g. '<%u%%%d> ' #log_lock_waits = off           # log lock waits >= deadlock_timeout #log_statement = 'none'         # none, ddl, mod, #log_replication_commands = off #log_temp_files = -1            # log temporary files equal or larger                     # specified size in kilobytes;                     # -1 disables, 0 logs temp files log_timezone = 'localtime'   # - process title -  cluster_name = '9.6/main'           # added process titles if nonempty                     # (change requires restart) #update_process_title = on   #------------------------------------------------------------------------------ # runtime statistics #------------------------------------------------------------------------------  # - query/index statistics collector -  #track_activities = on #track_counts = on #track_io_timing = off #track_functions = none         # none, pl, #track_activity_query_size = 1024   # (change requires restart) stats_temp_directory = '/var/run/postgresql/9.6-main.pg_stat_tmp'   # - statistics monitoring -  #log_parser_stats = off #log_planner_stats = off #log_executor_stats = off #log_statement_stats = off   #------------------------------------------------------------------------------ # autovacuum parameters #------------------------------------------------------------------------------  #autovacuum = on            # enable autovacuum subprocess?  'on'                     # requires track_counts on. #log_autovacuum_min_duration = -1   # -1 disables, 0 logs actions ,                     # durations, > 0 logs                     # actions running @ least number                     # of milliseconds. #autovacuum_max_workers = 3     # max number of autovacuum subprocesses                     # (change requires restart) #autovacuum_naptime = 1min      # time between autovacuum runs #autovacuum_vacuum_threshold = 50   # min number of row updates before                     # vacuum #autovacuum_analyze_threshold = 50  # min number of row updates before                     # analyze #autovacuum_vacuum_scale_factor = 0.2   # fraction of table size before vacuum #autovacuum_analyze_scale_factor = 0.1  # fraction of table size before analyze #autovacuum_freeze_max_age = 200000000  # maximum xid age before forced vacuum                     # (change requires restart) #autovacuum_multixact_freeze_max_age = 400000000    # maximum multixact age                     # before forced vacuum                     # (change requires restart) #autovacuum_vacuum_cost_delay = 20ms    # default vacuum cost delay                     # autovacuum, in milliseconds;                     # -1 means use vacuum_cost_delay #autovacuum_vacuum_cost_limit = -1  # default vacuum cost limit                     # autovacuum, -1 means use                     # vacuum_cost_limit   #------------------------------------------------------------------------------ # client connection defaults #------------------------------------------------------------------------------  # - statement behavior -  #search_path = '"$user", public'    # schema names #default_tablespace = ''        # tablespace name, '' uses default #temp_tablespaces = ''          # list of tablespace names, '' uses                     # default tablespace #check_function_bodies = on #default_transaction_isolation = 'read committed' #default_transaction_read_only = off #default_transaction_deferrable = off #session_replication_role = 'origin' #statement_timeout = 0          # in milliseconds, 0 disabled #lock_timeout = 0           # in milliseconds, 0 disabled #idle_in_transaction_session_timeout = 0        # in milliseconds, 0 disabled #vacuum_freeze_min_age = 50000000 #vacuum_freeze_table_age = 150000000 #vacuum_multixact_freeze_min_age = 5000000 #vacuum_multixact_freeze_table_age = 150000000 #bytea_output = 'hex'           # hex, escape #xmlbinary = 'base64' #xmloption = 'content' #gin_fuzzy_search_limit = 0 #gin_pending_list_limit = 4mb  # - locale , formatting -  datestyle = 'iso, dmy' #intervalstyle = 'postgres' timezone = 'localtime' #timezone_abbreviations = 'default'     # select set of available time zone                     # abbreviations.  currently, there                     #   default                     #   australia (historical usage)                     #   india                     # can create own file in                     # share/timezonesets/. #extra_float_digits = 0         # min -15, max 3 #client_encoding = sql_ascii        # actually, defaults database                     # encoding  # these settings initialized initdb, can changed. lc_messages = 'ru_ua.utf-8'         # locale system error message                     # strings lc_monetary = 'ru_ua.utf-8'         # locale monetary formatting lc_numeric = 'ru_ua.utf-8'          # locale number formatting lc_time = 'ru_ua.utf-8'             # locale time formatting  # default configuration text search default_text_search_config = 'pg_catalog.russian'  # - other defaults -  #dynamic_library_path = '$libdir' #local_preload_libraries = '' #session_preload_libraries = ''   #------------------------------------------------------------------------------ # lock management #------------------------------------------------------------------------------  #deadlock_timeout = 1s #max_locks_per_transaction = 64     # min 10                     # (change requires restart) #max_pred_locks_per_transaction = 64    # min 10                     # (change requires restart)   #------------------------------------------------------------------------------ # version/platform compatibility #------------------------------------------------------------------------------  # - previous postgresql versions -  #array_nulls = on #backslash_quote = safe_encoding    # on, off, or safe_encoding #default_with_oids = off #escape_string_warning = on #lo_compat_privileges = off #operator_precedence_warning = off #quote_all_identifiers = off #sql_inheritance = on #standard_conforming_strings = on #synchronize_seqscans = on  # - other platforms , clients -  #transform_null_equals = off   #------------------------------------------------------------------------------ # error handling #------------------------------------------------------------------------------  #exit_on_error = off            # terminate session on error? #restart_after_crash = on       # reinitialize after backend crash?   #------------------------------------------------------------------------------ # config file includes #------------------------------------------------------------------------------  # these options allow settings loaded files other # default postgresql.conf.  #include_dir = 'conf.d'         # include files ending in '.conf'                     # directory 'conf.d' #include_if_exists = 'exists.conf'  # include file if exists #include = 'special.conf'       # include file   #------------------------------------------------------------------------------ # customized options #------------------------------------------------------------------------------  # add settings extensions here