now | version -------------------------------+---------------------------------------------------------------------------------------------------------------------------------------- 2020-04-15 09:18:13.923955+02 | PostgreSQL 10.12 (Ubuntu 10.12-0ubuntu0.18.04.1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0, 64-bit (1 row) db_name | db_size | index_size -----------------+---------+------------ nuxeojunittests | 9255 kB | 4336 kB (1 row) totalrowcount --------------- 0 (1 row) documents_count ----------------- 2 (1 row) primarytype | count -------------+------- Folder | 1 Root | 1 (2 rows) hierarchy_count ----------------- 2 (1 row) aces_count ------------ 3 (1 row) acls_count ------------ 1 (1 row) acls_count | primarytype ------------+------------- 1 | Root (1 row) read_acls_count ----------------- 1 (1 row) aclrmax_size | acl --------------+-------------------------------------- 36 | administrators,Administrator,members (1 row) aclr_user_size ---------------- 0 (1 row) aclr_user_map_size -------------------- 0 (1 row) aclr_count | principal ------------+----------- (0 rows) Table "public.fulltext" Column | Type | Collation | Nullable | Default | Storage | Stats target | Description ------------------+------------------------+-----------+----------+---------+----------+--------------+------------- id | character varying(36) | | not null | | extended | | jobid | character varying(250) | | | | extended | | fulltext | text | | | | extended | | simpletext | text | | | | extended | | binarytext | text | | | | extended | | fulltext_title | text | | | | extended | | simpletext_title | text | | | | extended | | binarytext_title | text | | | | extended | | Indexes: "fulltext_pk" PRIMARY KEY, btree (id) "fulltext_fulltext_idx" gin (nx_to_tsvector(fulltext::character varying)) "fulltext_fulltext_title_idx" gin (nx_to_tsvector(fulltext_title::character varying)) "fulltext_jobid_idx" btree (jobid) Foreign-key constraints: "fulltext_id_hierarchy_fk" FOREIGN KEY (id) REFERENCES hierarchy(id) ON DELETE CASCADE Triggers: nx_trig_ft_update BEFORE INSERT OR UPDATE ON fulltext FOR EACH ROW EXECUTE PROCEDURE nx_update_fulltext() Table | Total size | Table size | TOAST table size | Index size | Index ratio --------------------------------+------------+------------+------------------+------------+------------- hierarchy | 144 kB | 8192 bytes | 8192 bytes | 128 kB | 16 ancestors | 64 kB | 8192 bytes | 8192 bytes | 48 kB | 6 fulltext | 56 kB | 0 bytes | 8192 bytes | 48 kB | 0 acls | 48 kB | 8192 bytes | 8192 bytes | 32 kB | 4 repositories | 40 kB | 8192 bytes | None | 32 kB | 4 hierarchy_read_acl | 40 kB | 8192 bytes | None | 32 kB | 4 aclr | 32 kB | 8192 bytes | 8192 bytes | 16 kB | 2 aclr_user | 32 kB | 0 bytes | 8192 bytes | 8192 bytes | 0 misc | 32 kB | 8192 bytes | 8192 bytes | 16 kB | 2 aclr_user_map | 32 kB | 0 bytes | None | 16 kB | 0 dc_contributors | 32 kB | 0 bytes | 8192 bytes | 24 kB | 0 versions | 24 kB | 0 bytes | 8192 bytes | 16 kB | 0 content_roots | 24 kB | 0 bytes | 8192 bytes | 16 kB | 0 proxies | 24 kB | 0 bytes | None | 24 kB | 0 publish_sections | 24 kB | 0 bytes | 8192 bytes | 16 kB | 0 dc_subjects | 24 kB | 0 bytes | 8192 bytes | 16 kB | 0 collection_documentids | 24 kB | 0 bytes | 8192 bytes | 16 kB | 0 dublincore | 24 kB | 0 bytes | 8192 bytes | 16 kB | 0 collectionmember_collectionids | 24 kB | 0 bytes | 8192 bytes | 16 kB | 0 uid | 16 kB | 0 bytes | 8192 bytes | 8192 bytes | 0 (20 rows) nspname | relname | index_ratio | index_size | table_size ---------+-------------------------------+-------------+------------+------------ public | ancestors_ancestors_idx | 3 | 24 kB | 8192 bytes public | repositories_name_idx | 2 | 16 kB | 8192 bytes public | hierarchy_read_acl_id_idx | 2 | 16 kB | 8192 bytes public | hierarchy_read_acl_acl_id_idx | 2 | 16 kB | 8192 bytes public | ancestors_id_idx | 2 | 16 kB | 8192 bytes public | hierarchy_pk | 2 | 16 kB | 8192 bytes public | hierarchy_parentid_idx | 2 | 16 kB | 8192 bytes public | hierarchy_parentid_name_idx | 2 | 16 kB | 8192 bytes public | hierarchy_primarytype_idx | 2 | 16 kB | 8192 bytes public | hierarchy_isversion_idx | 2 | 16 kB | 8192 bytes public | hierarchy_retainuntil_idx | 2 | 16 kB | 8192 bytes public | repositories_pk | 2 | 16 kB | 8192 bytes public | hierarchy_unique_child | 2 | 16 kB | 8192 bytes public | acls_unique_pos | 2 | 16 kB | 8192 bytes public | acls_id_idx | 2 | 16 kB | 8192 bytes (15 rows) relname | total_reads ---------------+------------- pg_database | 1120618 pg_class | 64622 pg_attribute | 16504 pg_index | 14911 pg_opclass | 14375 pg_trigger | 8553 pg_depend | 3752 pg_proc | 3615 pg_operator | 1322 pg_amop | 909 pg_constraint | 857 pg_type | 800 pg_shdepend | 616 pg_amproc | 522 pg_statistic | 513 (15 rows) relname | seq_scan | rows | idx_scan | last_autovacuum | last_autoanalyze --------------------------------+----------+------+----------+-----------------+------------------ aclr_permission | 12 | 6 | | | hierarchy | 14 | 1 | 12 | | acls | 3 | 3 | 5 | | repositories | 3 | 1 | 3 | | relation | 2 | 0 | 0 | | domain | 2 | 0 | 0 | | common | 2 | 0 | 1 | | content | 2 | 0 | 0 | | aclr_modified | 4 | 0 | | | dc_contributors | 4 | 0 | 1 | | uid | 2 | 0 | 0 | | locks | 1 | 0 | 1 | | relatedtextresource | 2 | 0 | 0 | | dc_subjects | 3 | 0 | 1 | | collectionmember_collectionids | 3 | 0 | 0 | | aclr_user | 4 | 0 | 0 | | collection_documentids | 3 | 0 | 0 | | coldstorage | 2 | 0 | 0 | | fulltext | 5 | 0 | 0 | | note | 2 | 0 | 0 | | webcontainer | 2 | 0 | 0 | | proxies | 5 | 0 | 0 | | publish_sections | 3 | 0 | 0 | | content_roots | 3 | 0 | 0 | | hierarchy_read_acl | 5 | 0 | 2 | | dublincore | 3 | 0 | 1 | | aclr_user_map | 6 | 0 | 0 | | aclr | 3 | 0 | 2 | | ancestors | 7 | 0 | 0 | | misc | 2 | 0 | 1 | | versions | 3 | 0 | 5 | | (31 rows) nspname | relname | useless_indexrelname | idx_scan | index_size ---------+--------------------+-----------------------------+----------+------------ public | ancestors | ancestors_ancestors_idx | 0 | 24 kB public | hierarchy | hierarchy_primarytype_idx | 0 | 16 kB public | fulltext | fulltext_fulltext_title_idx | 0 | 16 kB public | hierarchy_read_acl | hierarchy_read_acl_id_idx | 0 | 16 kB public | hierarchy | hierarchy_retainuntil_idx | 0 | 16 kB public | hierarchy | hierarchy_isversion_idx | 0 | 16 kB public | acls | acls_id_idx | 0 | 16 kB public | fulltext | fulltext_fulltext_idx | 0 | 16 kB public | ancestors | ancestors_id_idx | 0 | 16 kB public | hierarchy | hierarchy_parentid_name_idx | 0 | 16 kB (10 rows) heap_read | heap_hit | ratio -----------+----------+------------------------ 7 | 86 | 0.91860465116279069767 (1 row) relname | percent_of_times_index_used | rows_in_table --------------------------------+-----------------------------+--------------- aclr_permission | | 6 acls | 62 | 3 hierarchy | 46 | 1 repositories | 50 | 1 relation | 0 | 0 domain | 0 | 0 common | 33 | 0 content | 0 | 0 aclr_modified | | 0 dc_contributors | 20 | 0 uid | 0 | 0 locks | 50 | 0 relatedtextresource | 0 | 0 dc_subjects | 25 | 0 collectionmember_collectionids | 0 | 0 aclr_user | 0 | 0 collection_documentids | 0 | 0 coldstorage | 0 | 0 fulltext | 0 | 0 note | 0 | 0 webcontainer | 0 | 0 proxies | 0 | 0 publish_sections | 0 | 0 content_roots | 0 | 0 hierarchy_read_acl | 28 | 0 dublincore | 25 | 0 aclr_user_map | 0 | 0 aclr | 40 | 0 ancestors | 0 | 0 misc | 33 | 0 versions | 62 | 0 (31 rows) idx_read | idx_hit | ratio ----------+---------+------------------------ 59 | 369 | 0.84010840108401084011 (1 row) List of relations Schema | Name | Type | Owner | Table | Size | Description --------+-------------------------------------------+-------+-------+--------------------------------+------------+------------- public | aclr_acl_id_idx | index | nuxeo | aclr | 16 kB | public | aclr_user_map_acl_id_idx | index | nuxeo | aclr_user_map | 16 kB | public | aclr_user_map_user_id_idx | index | nuxeo | aclr_user_map | 16 kB | public | aclr_user_user_id_key | index | nuxeo | aclr_user | 16 kB | public | acls_id_idx | index | nuxeo | acls | 16 kB | public | acls_unique_pos | index | nuxeo | acls | 16 kB | public | ancestors_ancestors_idx | index | nuxeo | ancestors | 24 kB | public | ancestors_ancestors_is_null_idx | index | nuxeo | ancestors | 8192 bytes | public | ancestors_id_idx | index | nuxeo | ancestors | 16 kB | public | coldstorage_pk | index | nuxeo | coldstorage | 8192 bytes | public | collection_documentids_id_idx | index | nuxeo | collection_documentids | 8192 bytes | public | collection_documentids_unique_pos | index | nuxeo | collection_documentids | 8192 bytes | public | collectionmember_collectionids_id_idx | index | nuxeo | collectionmember_collectionids | 8192 bytes | public | collectionmember_collectionids_unique_pos | index | nuxeo | collectionmember_collectionids | 8192 bytes | public | common_pk | index | nuxeo | common | 8192 bytes | public | content_pk | index | nuxeo | content | 8192 bytes | public | content_roots_id_idx | index | nuxeo | content_roots | 8192 bytes | public | content_roots_unique_pos | index | nuxeo | content_roots | 8192 bytes | public | dc_contributors_id_idx | index | nuxeo | dc_contributors | 8192 bytes | public | dc_contributors_item_idx | index | nuxeo | dc_contributors | 8192 bytes | public | dc_contributors_unique_pos | index | nuxeo | dc_contributors | 8192 bytes | public | dc_subjects_id_idx | index | nuxeo | dc_subjects | 8192 bytes | public | dc_subjects_unique_pos | index | nuxeo | dc_subjects | 8192 bytes | public | domain_pk | index | nuxeo | domain | 8192 bytes | public | dublincore_modified_idx | index | nuxeo | dublincore | 8192 bytes | public | dublincore_pk | index | nuxeo | dublincore | 8192 bytes | public | fulltext_fulltext_idx | index | nuxeo | fulltext | 16 kB | public | fulltext_fulltext_title_idx | index | nuxeo | fulltext | 16 kB | public | fulltext_jobid_idx | index | nuxeo | fulltext | 8192 bytes | public | fulltext_pk | index | nuxeo | fulltext | 8192 bytes | public | hierarchy_isversion_idx | index | nuxeo | hierarchy | 16 kB | public | hierarchy_parentid_idx | index | nuxeo | hierarchy | 16 kB | public | hierarchy_parentid_name_idx | index | nuxeo | hierarchy | 16 kB | public | hierarchy_pk | index | nuxeo | hierarchy | 16 kB | public | hierarchy_primarytype_idx | index | nuxeo | hierarchy | 16 kB | public | hierarchy_read_acl_acl_id_idx | index | nuxeo | hierarchy_read_acl | 16 kB | public | hierarchy_read_acl_id_idx | index | nuxeo | hierarchy_read_acl | 16 kB | public | hierarchy_retainuntil_idx | index | nuxeo | hierarchy | 16 kB | public | hierarchy_unique_child | index | nuxeo | hierarchy | 16 kB | public | hierarchy_unique_child_complex | index | nuxeo | hierarchy | 8192 bytes | public | hierarchy_unique_child_complex_list | index | nuxeo | hierarchy | 8192 bytes | public | locks_pk | index | nuxeo | locks | 8192 bytes | public | misc_pk | index | nuxeo | misc | 16 kB | public | note_pk | index | nuxeo | note | 8192 bytes | public | proxies_pk | index | nuxeo | proxies | 8192 bytes | public | proxies_targetid_idx | index | nuxeo | proxies | 8192 bytes | public | proxies_versionableid_idx | index | nuxeo | proxies | 8192 bytes | public | publish_sections_id_idx | index | nuxeo | publish_sections | 8192 bytes | public | publish_sections_unique_pos | index | nuxeo | publish_sections | 8192 bytes | public | relatedtextresource_pk | index | nuxeo | relatedtextresource | 8192 bytes | public | relation_pk | index | nuxeo | relation | 8192 bytes | public | repositories_name_idx | index | nuxeo | repositories | 16 kB | public | repositories_pk | index | nuxeo | repositories | 16 kB | public | uid_pk | index | nuxeo | uid | 8192 bytes | public | versions_pk | index | nuxeo | versions | 8192 bytes | public | versions_versionableid_idx | index | nuxeo | versions | 8192 bytes | public | webcontainer_pk | index | nuxeo | webcontainer | 8192 bytes | (57 rows) speedTest -------------- 500000500000 (1 row) QUERY PLAN ---------------------------------------------------------------------------------------------------------------------------------- Aggregate (cost=12.50..12.51 rows=1 width=8) (actual time=2444.818..2444.820 rows=1 loops=1) -> Function Scan on generate_series (cost=0.00..10.00 rows=1000 width=4) (actual time=69.329..1262.745 rows=1000000 loops=1) Planning time: 0.020 ms Execution time: 2446.480 ms (4 rows) duration | query -----------------+--------------------------------------------------------------------- | | | | | 00:01:32.242978 | SET application_name = 'PostgreSQL JDBC Driver' 00:01:08.872524 | DELETE FROM "hierarchy" WHERE "id" = $1 00:01:08.869833 | DELETE FROM "hierarchy" WHERE "id" = $1 00:00:48.662702 | DELETE FROM "hierarchy" WHERE "id" = $1 00:00:28.055775 | DELETE FROM "hierarchy" WHERE "id" = $1 00:00:00 | SELECT now() - query_start AS duration, query FROM pg_stat_activity+ | WHERE query != '' ORDER BY duration DESC; (11 rows) database | prepared_xacts_gid ----------+-------------------- (0 rows) usename | count ----------+------- nuxeo | 5 postgres | 2 | 4 (3 rows) datid | datname | pid | usesysid | usename | application_name | client_addr | client_hostname | client_port | backend_start | xact_start | query_start | state_change | wait_event_type | wait_event | state | backend_xid | backend_xmin | query | backend_type -------+-----------------+-------+----------+----------+------------------------+-------------+-----------------+-------------+-------------------------------+-------------------------------+-------------------------------+-------------------------------+-----------------+---------------------+---------------------+-------------+--------------+-------------------------------------------------+--------------------- | | 27510 | | | | | | | 2020-04-14 19:36:13.534513+02 | | | | Activity | AutoVacuumMain | | | | | autovacuum launcher | | 27512 | 10 | postgres | | | | | 2020-04-14 19:36:13.537269+02 | | | | Activity | LogicalLauncherMain | | | | | background worker 37175 | nuxeojunittests | 15323 | 16384 | nuxeo | PostgreSQL JDBC Driver | 127.0.0.1 | | 41792 | 2020-04-15 09:16:44.254229+02 | 2020-04-15 09:17:07.672647+02 | 2020-04-15 09:17:07.693248+02 | 2020-04-15 09:17:07.693251+02 | Lock | transactionid | active | 11084 | 11083 | DELETE FROM "hierarchy" WHERE "id" = $1 | client backend 37175 | nuxeojunittests | 15324 | 16384 | nuxeo | PostgreSQL JDBC Driver | 127.0.0.1 | | 41794 | 2020-04-15 09:16:44.281756+02 | 2020-04-15 09:17:07.672647+02 | 2020-04-15 09:17:07.690557+02 | 2020-04-15 09:17:07.694158+02 | Client | ClientRead | idle in transaction | 11083 | | DELETE FROM "hierarchy" WHERE "id" = $1 | client backend 37175 | nuxeojunittests | 15325 | 16384 | nuxeo | PostgreSQL JDBC Driver | 127.0.0.1 | | 41796 | 2020-04-15 09:16:44.298111+02 | 2020-04-15 09:17:48.480821+02 | 2020-04-15 09:17:48.507306+02 | 2020-04-15 09:17:48.507308+02 | Lock | tuple | active | 11090 | 11083 | DELETE FROM "hierarchy" WHERE "id" = $1 | client backend 37175 | nuxeojunittests | 15326 | 16384 | nuxeo | PostgreSQL JDBC Driver | 127.0.0.1 | | 41798 | 2020-04-15 09:16:44.309807+02 | | 2020-04-15 09:16:44.320103+02 | 2020-04-15 09:16:44.320119+02 | Client | ClientRead | idle | | | SET application_name = 'PostgreSQL JDBC Driver' | client backend 37175 | nuxeojunittests | 15327 | 16384 | nuxeo | PostgreSQL JDBC Driver | 127.0.0.1 | | 41800 | 2020-04-15 09:16:44.321193+02 | 2020-04-15 09:17:27.879553+02 | 2020-04-15 09:17:27.900379+02 | 2020-04-15 09:17:27.90038+02 | Lock | tuple | active | 11085 | 11083 | DELETE FROM "hierarchy" WHERE "id" = $1 | client backend 37175 | nuxeojunittests | 15909 | 10 | postgres | psql | | | -1 | 2020-04-15 09:18:13.921208+02 | 2020-04-15 09:18:16.564453+02 | 2020-04-15 09:18:16.564453+02 | 2020-04-15 09:18:16.564454+02 | | | active | | 11083 | SELECT * FROM pg_catalog.pg_stat_activity; | client backend | | 27508 | | | | | | | 2020-04-14 19:36:13.532224+02 | | | | Activity | BgWriterHibernate | | | | | background writer | | 27507 | | | | | | | 2020-04-14 19:36:13.531557+02 | | | | Activity | CheckpointerMain | | | | | checkpointer | | 27509 | | | | | | | 2020-04-14 19:36:13.532941+02 | | | | Activity | WalWriterMain | | | | | walwriter (11 rows) relation | locktype | database | relation | page | tuple | virtualxid | transactionid | classid | objid | objsubid | virtualtransaction | pid | mode | granted | fastpath -----------+---------------+----------+----------+------+-------+------------+---------------+---------+-------+----------+--------------------+-------+---------------------+---------+---------- hierarchy | tuple | 37175 | 37600 | 0 | 2 | | | | | | 5/190 | 15325 | AccessExclusiveLock | f | f hierarchy | tuple | 37175 | 37600 | 0 | 2 | | | | | | 7/389 | 15327 | AccessExclusiveLock | f | f | transactionid | | | | | | 11083 | | | | 3/2443 | 15323 | ShareLock | f | f (3 rows) blocked_pid | blocked_user | blocking_statement | blocking_duration | blocking_pid | blocking_user | blocked_statement | blocked_duration -------------+--------------+-----------------------------------------+-------------------+--------------+---------------+-----------------------------------------+------------------ 15323 | nuxeo | DELETE FROM "hierarchy" WHERE "id" = $1 | 00:01:08.874771 | 15324 | nuxeo | DELETE FROM "hierarchy" WHERE "id" = $1 | 00:01:08.87208 (1 row) checkpoints_timed | checkpoints_req | checkpoint_write_time | checkpoint_sync_time | buffers_checkpoint | buffers_clean | maxwritten_clean | buffers_backend | buffers_backend_fsync | buffers_alloc | stats_reset -------------------+-----------------+-----------------------+----------------------+--------------------+---------------+------------------+-----------------+-----------------------+---------------+------------------------------ 8643 | 27 | 149544 | 450 | 1565 | 0 | 0 | 4050 | 0 | 4554 | 2020-02-21 14:33:44.14209+01 (1 row) funcname | calls | total_time | self_time | elapsed_ms ----------+-------+------------+-----------+------------ (0 rows) name | unit | current_setting | source ----------------------------+------+-----------------------------------------+---------------------- application_name | | psql | client client_encoding | | UTF8 | client cluster_name | | 10/main | configuration file config_file | | /etc/postgresql/10/main/postgresql.conf | override data_checksums | | off | override data_directory | | /var/lib/postgresql/10/main | override DateStyle | | ISO, DMY | configuration file default_text_search_config | | pg_catalog.french | configuration file dynamic_shared_memory_type | | posix | configuration file external_pid_file | | /var/run/postgresql/10-main.pid | configuration file hba_file | | /etc/postgresql/10/main/pg_hba.conf | override ident_file | | /etc/postgresql/10/main/pg_ident.conf | override lc_collate | | fr_FR.UTF-8 | override lc_ctype | | fr_FR.UTF-8 | override lc_messages | | fr_FR.UTF-8 | configuration file lc_monetary | | fr_FR.UTF-8 | configuration file lc_numeric | | fr_FR.UTF-8 | configuration file lc_time | | fr_FR.UTF-8 | configuration file log_line_prefix | | %m [%p] %q%u@%d | configuration file log_timezone | | Europe/Paris | configuration file max_connections | | 100 | configuration file max_stack_depth | kB | 2MB | environment variable port | | 5432 | configuration file server_encoding | | UTF8 | override shared_buffers | 8kB | 128MB | configuration file ssl | | on | configuration file ssl_cert_file | | /etc/ssl/certs/ssl-cert-snakeoil.pem | configuration file ssl_key_file | | /etc/ssl/private/ssl-cert-snakeoil.key | configuration file stats_temp_directory | | /var/run/postgresql/10-main.pg_stat_tmp | configuration file TimeZone | | Europe/Paris | configuration file transaction_deferrable | | off | override transaction_isolation | | read committed | override transaction_read_only | | off | override unix_socket_directories | | /var/run/postgresql | configuration file wal_buffers | 8kB | 4MB | override (35 rows) name | setting | description -------------------------------------+-----------------------------------------+------------------------------------------------------------------------------------------------------------------------------- allow_system_table_mods | off | Allows modifications of the structure of system tables. application_name | psql | Sets the application name to be reported in statistics and logs. archive_command | (disabled) | Sets the shell command that will be called to archive a WAL file. archive_mode | off | Allows archiving of WAL files using archive_command. archive_timeout | 0 | Forces a switch to the next WAL file if a new file has not been started within N seconds. array_nulls | on | Enable input of NULL elements in arrays. authentication_timeout | 1min | Sets the maximum allowed time to complete client authentication. autovacuum | on | Starts the autovacuum subprocess. autovacuum_analyze_scale_factor | 0.1 | Number of tuple inserts, updates, or deletes prior to analyze as a fraction of reltuples. autovacuum_analyze_threshold | 50 | Minimum number of tuple inserts, updates, or deletes prior to analyze. autovacuum_freeze_max_age | 200000000 | Age at which to autovacuum a table to prevent transaction ID wraparound. autovacuum_max_workers | 3 | Sets the maximum number of simultaneously running autovacuum worker processes. autovacuum_multixact_freeze_max_age | 400000000 | Multixact age at which to autovacuum a table to prevent multixact wraparound. autovacuum_naptime | 1min | Time to sleep between autovacuum runs. autovacuum_vacuum_cost_delay | 20ms | Vacuum cost delay in milliseconds, for autovacuum. autovacuum_vacuum_cost_limit | -1 | Vacuum cost amount available before napping, for autovacuum. autovacuum_vacuum_scale_factor | 0.2 | Number of tuple updates or deletes prior to vacuum as a fraction of reltuples. autovacuum_vacuum_threshold | 50 | Minimum number of tuple updates or deletes prior to vacuum. autovacuum_work_mem | -1 | Sets the maximum memory to be used by each autovacuum worker process. backend_flush_after | 0 | Number of pages after which previously performed writes are flushed to disk. backslash_quote | safe_encoding | Sets whether "\'" is allowed in string literals. bgwriter_delay | 200ms | Background writer sleep time between rounds. bgwriter_flush_after | 512kB | Number of pages after which previously performed writes are flushed to disk. bgwriter_lru_maxpages | 100 | Background writer maximum number of LRU pages to flush per round. bgwriter_lru_multiplier | 2 | Multiple of the average buffer usage to free per round. block_size | 8192 | Shows the size of a disk block. bonjour | off | Enables advertising the server via Bonjour. bonjour_name | | Sets the Bonjour service name. bytea_output | hex | Sets the output format for bytea. check_function_bodies | on | Check function bodies during CREATE FUNCTION. checkpoint_completion_target | 0.5 | Time spent flushing dirty buffers during checkpoint, as fraction of checkpoint interval. checkpoint_flush_after | 256kB | Number of pages after which previously performed writes are flushed to disk. checkpoint_timeout | 5min | Sets the maximum time between automatic WAL checkpoints. checkpoint_warning | 30s | Enables warnings if checkpoint segments are filled more frequently than this. client_encoding | UTF8 | Sets the client's character set encoding. client_min_messages | notice | Sets the message levels that are sent to the client. cluster_name | 10/main | Sets the name of the cluster, which is included in the process title. commit_delay | 0 | Sets the delay in microseconds between transaction commit and flushing WAL to disk. commit_siblings | 5 | Sets the minimum concurrent open transactions before performing commit_delay. config_file | /etc/postgresql/10/main/postgresql.conf | Sets the server's main configuration file. constraint_exclusion | partition | Enables the planner to use constraints to optimize queries. cpu_index_tuple_cost | 0.005 | Sets the planner's estimate of the cost of processing each index entry during an index scan. cpu_operator_cost | 0.0025 | Sets the planner's estimate of the cost of processing each operator or function call. cpu_tuple_cost | 0.01 | Sets the planner's estimate of the cost of processing each tuple (row). cursor_tuple_fraction | 0.1 | Sets the planner's estimate of the fraction of a cursor's rows that will be retrieved. data_checksums | off | Shows whether data checksums are turned on for this cluster. data_directory | /var/lib/postgresql/10/main | Sets the server's data directory. data_sync_retry | off | Whether to continue running after a failure to sync data files. DateStyle | ISO, DMY | Sets the display format for date and time values. db_user_namespace | off | Enables per-database user names. deadlock_timeout | 1s | Sets the time to wait on a lock before checking for deadlock. debug_assertions | off | Shows whether the running server has assertion checks enabled. debug_pretty_print | on | Indents parse and plan tree displays. debug_print_parse | off | Logs each query's parse tree. debug_print_plan | off | Logs each query's execution plan. debug_print_rewritten | off | Logs each query's rewritten parse tree. default_statistics_target | 100 | Sets the default statistics target. default_tablespace | | Sets the default tablespace to create tables and indexes in. default_text_search_config | pg_catalog.french | Sets default text search configuration. default_transaction_deferrable | off | Sets the default deferrable status of new transactions. default_transaction_isolation | read committed | Sets the transaction isolation level of each new transaction. default_transaction_read_only | off | Sets the default read-only status of new transactions. default_with_oids | off | Create new tables with OIDs by default. dynamic_library_path | $libdir | Sets the path for dynamically loadable modules. dynamic_shared_memory_type | posix | Selects the dynamic shared memory implementation used. effective_cache_size | 4GB | Sets the planner's assumption about the total size of the data caches. effective_io_concurrency | 1 | Number of simultaneous requests that can be handled efficiently by the disk subsystem. enable_bitmapscan | on | Enables the planner's use of bitmap-scan plans. enable_gathermerge | on | Enables the planner's use of gather merge plans. enable_hashagg | on | Enables the planner's use of hashed aggregation plans. enable_hashjoin | on | Enables the planner's use of hash join plans. enable_indexonlyscan | on | Enables the planner's use of index-only-scan plans. enable_indexscan | on | Enables the planner's use of index-scan plans. enable_material | on | Enables the planner's use of materialization. enable_mergejoin | on | Enables the planner's use of merge join plans. enable_nestloop | on | Enables the planner's use of nested-loop join plans. enable_seqscan | on | Enables the planner's use of sequential-scan plans. enable_sort | on | Enables the planner's use of explicit sort steps. enable_tidscan | on | Enables the planner's use of TID scan plans. escape_string_warning | on | Warn about backslash escapes in ordinary string literals. event_source | PostgreSQL | Sets the application name used to identify PostgreSQL messages in the event log. exit_on_error | off | Terminate session on any error. external_pid_file | /var/run/postgresql/10-main.pid | Writes the postmaster PID to the specified file. extra_float_digits | 0 | Sets the number of digits displayed for floating-point values. force_parallel_mode | off | Forces use of parallel query facilities. from_collapse_limit | 8 | Sets the FROM-list size beyond which subqueries are not collapsed. fsync | on | Forces synchronization of updates to disk. full_page_writes | on | Writes full pages to WAL when first modified after a checkpoint. geqo | on | Enables genetic query optimization. geqo_effort | 5 | GEQO: effort is used to set the default for other GEQO parameters. geqo_generations | 0 | GEQO: number of iterations of the algorithm. geqo_pool_size | 0 | GEQO: number of individuals in the population. geqo_seed | 0 | GEQO: seed for random path selection. geqo_selection_bias | 2 | GEQO: selective pressure within the population. geqo_threshold | 12 | Sets the threshold of FROM items beyond which GEQO is used. gin_fuzzy_search_limit | 0 | Sets the maximum allowed result for exact search by GIN. gin_pending_list_limit | 4MB | Sets the maximum size of the pending list for GIN index. hba_file | /etc/postgresql/10/main/pg_hba.conf | Sets the server's "hba" configuration file. hot_standby | on | Allows connections and queries during recovery. hot_standby_feedback | off | Allows feedback from a hot standby to the primary that will avoid query conflicts. huge_pages | try | Use of huge pages on Linux. ident_file | /etc/postgresql/10/main/pg_ident.conf | Sets the server's "ident" configuration file. idle_in_transaction_session_timeout | 0 | Sets the maximum allowed duration of any idling transaction. ignore_checksum_failure | off | Continues processing after a checksum failure. ignore_system_indexes | off | Disables reading from system indexes. integer_datetimes | on | Datetimes are integer based. IntervalStyle | postgres | Sets the display format for interval values. join_collapse_limit | 8 | Sets the FROM-list size beyond which JOIN constructs are not flattened. krb_caseins_users | off | Sets whether Kerberos and GSSAPI user names should be treated as case-insensitive. krb_server_keyfile | FILE:/etc/postgresql-common/krb5.keytab | Sets the location of the Kerberos server key file. lc_collate | fr_FR.UTF-8 | Shows the collation order locale. lc_ctype | fr_FR.UTF-8 | Shows the character classification and case conversion locale. lc_messages | fr_FR.UTF-8 | Sets the language in which messages are displayed. lc_monetary | fr_FR.UTF-8 | Sets the locale for formatting monetary amounts. lc_numeric | fr_FR.UTF-8 | Sets the locale for formatting numbers. lc_time | fr_FR.UTF-8 | Sets the locale for formatting date and time values. listen_addresses | localhost | Sets the host name or IP address(es) to listen to. lo_compat_privileges | off | Enables backward compatibility mode for privilege checks on large objects. local_preload_libraries | | Lists unprivileged shared libraries to preload into each backend. lock_timeout | 0 | Sets the maximum allowed duration of any wait for a lock. log_autovacuum_min_duration | -1 | Sets the minimum execution time above which autovacuum actions will be logged. log_checkpoints | off | Logs each checkpoint. log_connections | off | Logs each successful connection. log_destination | stderr | Sets the destination for server log output. log_directory | log | Sets the destination directory for log files. log_disconnections | off | Logs end of a session, including duration. log_duration | off | Logs the duration of each completed SQL statement. log_error_verbosity | default | Sets the verbosity of logged messages. log_executor_stats | off | Writes executor performance statistics to the server log. log_file_mode | 0600 | Sets the file permissions for log files. log_filename | postgresql-%Y-%m-%d_%H%M%S.log | Sets the file name pattern for log files. log_hostname | off | Logs the host name in the connection logs. log_line_prefix | %m [%p] %q%u@%d | Controls information prefixed to each log line. log_lock_waits | off | Logs long lock waits. log_min_duration_statement | -1 | Sets the minimum execution time above which statements will be logged. log_min_error_statement | error | Causes all statements generating error at or above this level to be logged. log_min_messages | warning | Sets the message levels that are logged. log_parser_stats | off | Writes parser performance statistics to the server log. log_planner_stats | off | Writes planner performance statistics to the server log. log_replication_commands | off | Logs each replication command. log_rotation_age | 1d | Automatic log file rotation will occur after N minutes. log_rotation_size | 10MB | Automatic log file rotation will occur after N kilobytes. log_statement | none | Sets the type of statements logged. log_statement_stats | off | Writes cumulative performance statistics to the server log. log_temp_files | -1 | Log the use of temporary files larger than this number of kilobytes. log_timezone | Europe/Paris | Sets the time zone to use in log messages. log_truncate_on_rotation | off | Truncate existing log files of same name during log rotation. logging_collector | off | Start a subprocess to capture stderr output and/or csvlogs into log files. maintenance_work_mem | 64MB | Sets the maximum memory to be used for maintenance operations. max_connections | 100 | Sets the maximum number of concurrent connections. max_files_per_process | 1000 | Sets the maximum number of simultaneously open files for each server process. max_function_args | 100 | Shows the maximum number of function arguments. max_identifier_length | 63 | Shows the maximum identifier length. max_index_keys | 32 | Shows the maximum number of index keys. max_locks_per_transaction | 64 | Sets the maximum number of locks per transaction. max_logical_replication_workers | 4 | Maximum number of logical replication worker processes. max_parallel_workers | 8 | Sets the maximum number of parallel workers that can be active at one time. max_parallel_workers_per_gather | 2 | Sets the maximum number of parallel processes per executor node. max_pred_locks_per_page | 2 | Sets the maximum number of predicate-locked tuples per page. max_pred_locks_per_relation | -2 | Sets the maximum number of predicate-locked pages and tuples per relation. max_pred_locks_per_transaction | 64 | Sets the maximum number of predicate locks per transaction. max_prepared_transactions | 0 | Sets the maximum number of simultaneously prepared transactions. max_replication_slots | 10 | Sets the maximum number of simultaneously defined replication slots. max_stack_depth | 2MB | Sets the maximum stack depth, in kilobytes. max_standby_archive_delay | 30s | Sets the maximum delay before canceling queries when a hot standby server is processing archived WAL data. max_standby_streaming_delay | 30s | Sets the maximum delay before canceling queries when a hot standby server is processing streamed WAL data. max_sync_workers_per_subscription | 2 | Maximum number of table synchronization workers per subscription. max_wal_senders | 10 | Sets the maximum number of simultaneously running WAL sender processes. max_wal_size | 1GB | Sets the WAL size that triggers a checkpoint. max_worker_processes | 8 | Maximum number of concurrent worker processes. min_parallel_index_scan_size | 512kB | Sets the minimum amount of index data for a parallel scan. min_parallel_table_scan_size | 8MB | Sets the minimum amount of table data for a parallel scan. min_wal_size | 80MB | Sets the minimum size to shrink the WAL to. old_snapshot_threshold | -1 | Time before a snapshot is too old to read pages changed after the snapshot was taken. operator_precedence_warning | off | Emit a warning for constructs that changed meaning since PostgreSQL 9.4. parallel_setup_cost | 1000 | Sets the planner's estimate of the cost of starting up worker processes for parallel query. parallel_tuple_cost | 0.1 | Sets the planner's estimate of the cost of passing each tuple (row) from worker to master backend. password_encryption | md5 | Encrypt passwords. port | 5432 | Sets the TCP port the server listens on. post_auth_delay | 0 | Waits N seconds on connection startup after authentication. pre_auth_delay | 0 | Waits N seconds on connection startup before authentication. quote_all_identifiers | off | When generating SQL fragments, quote all identifiers. random_page_cost | 4 | Sets the planner's estimate of the cost of a nonsequentially fetched disk page. replacement_sort_tuples | 150000 | Sets the maximum number of tuples to be sorted using replacement selection. restart_after_crash | on | Reinitialize server after backend crash. row_security | on | Enable row security. search_path | "$user", public | Sets the schema search order for names that are not schema-qualified. segment_size | 1GB | Shows the number of pages per disk file. seq_page_cost | 1 | Sets the planner's estimate of the cost of a sequentially fetched disk page. server_encoding | UTF8 | Sets the server (database) character set encoding. server_version | 10.12 (Ubuntu 10.12-0ubuntu0.18.04.1) | Shows the server version. server_version_num | 100012 | Shows the server version as an integer. session_preload_libraries | | Lists shared libraries to preload into each backend. session_replication_role | origin | Sets the session's behavior for triggers and rewrite rules. shared_buffers | 128MB | Sets the number of shared memory buffers used by the server. shared_preload_libraries | | Lists shared libraries to preload into server. ssl | on | Enables SSL connections. ssl_ca_file | | Location of the SSL certificate authority file. ssl_cert_file | /etc/ssl/certs/ssl-cert-snakeoil.pem | Location of the SSL server certificate file. ssl_ciphers | HIGH:MEDIUM:+3DES:!aNULL | Sets the list of allowed SSL ciphers. ssl_crl_file | | Location of the SSL certificate revocation list file. ssl_dh_params_file | | Location of the SSL DH parameters file. ssl_ecdh_curve | prime256v1 | Sets the curve to use for ECDH. ssl_key_file | /etc/ssl/private/ssl-cert-snakeoil.key | Location of the SSL server private key file. ssl_prefer_server_ciphers | on | Give priority to server ciphersuite order. standard_conforming_strings | on | Causes '...' strings to treat backslashes literally. statement_timeout | 0 | Sets the maximum allowed duration of any statement. stats_temp_directory | /var/run/postgresql/10-main.pg_stat_tmp | Writes temporary statistics files to the specified directory. superuser_reserved_connections | 3 | Sets the number of connection slots reserved for superusers. synchronize_seqscans | on | Enable synchronized sequential scans. synchronous_commit | on | Sets the current transaction's synchronization level. synchronous_standby_names | | Number of synchronous standbys and list of names of potential synchronous ones. syslog_facility | local0 | Sets the syslog "facility" to be used when syslog enabled. syslog_ident | postgres | Sets the program name used to identify PostgreSQL messages in syslog. syslog_sequence_numbers | on | Add sequence number to syslog messages to avoid duplicate suppression. syslog_split_messages | on | Split messages sent to syslog by lines and to fit into 1024 bytes. tcp_keepalives_count | 0 | Maximum number of TCP keepalive retransmits. tcp_keepalives_idle | 0 | Time between issuing TCP keepalives. tcp_keepalives_interval | 0 | Time between TCP keepalive retransmits. temp_buffers | 8MB | Sets the maximum number of temporary buffers used by each session. temp_file_limit | -1 | Limits the total size of all temporary files used by each process. temp_tablespaces | | Sets the tablespace(s) to use for temporary tables and sort files. TimeZone | Europe/Paris | Sets the time zone for displaying and interpreting time stamps. timezone_abbreviations | Default | Selects a file of time zone abbreviations. trace_notify | off | Generates debugging output for LISTEN and NOTIFY. trace_recovery_messages | log | Enables logging of recovery-related debugging information. trace_sort | off | Emit information about resource usage in sorting. track_activities | on | Collects information about executing commands. track_activity_query_size | 1024 | Sets the size reserved for pg_stat_activity.query, in bytes. track_commit_timestamp | off | Collects transaction commit time. track_counts | on | Collects statistics on database activity. track_functions | none | Collects function-level statistics on database activity. track_io_timing | off | Collects timing statistics for database I/O activity. transaction_deferrable | off | Whether to defer a read-only serializable transaction until it can be executed with no possible serialization failures. transaction_isolation | read committed | Sets the current transaction's isolation level. transaction_read_only | off | Sets the current transaction's read-only status. transform_null_equals | off | Treats "expr=NULL" as "expr IS NULL". unix_socket_directories | /var/run/postgresql | Sets the directories where Unix-domain sockets will be created. unix_socket_group | | Sets the owning group of the Unix-domain socket. unix_socket_permissions | 0777 | Sets the access permissions of the Unix-domain socket. update_process_title | on | Updates the process title to show the active SQL command. vacuum_cost_delay | 0 | Vacuum cost delay in milliseconds. vacuum_cost_limit | 200 | Vacuum cost amount available before napping. vacuum_cost_page_dirty | 20 | Vacuum cost for a page dirtied by vacuum. vacuum_cost_page_hit | 1 | Vacuum cost for a page found in the buffer cache. vacuum_cost_page_miss | 10 | Vacuum cost for a page not found in the buffer cache. vacuum_defer_cleanup_age | 0 | Number of transactions by which VACUUM and HOT cleanup should be deferred, if any. vacuum_freeze_min_age | 50000000 | Minimum age at which VACUUM should freeze a table row. vacuum_freeze_table_age | 150000000 | Age at which VACUUM should scan whole table to freeze tuples. vacuum_multixact_freeze_min_age | 5000000 | Minimum age at which VACUUM should freeze a MultiXactId in a table row. vacuum_multixact_freeze_table_age | 150000000 | Multixact age at which VACUUM should scan whole table to freeze tuples. wal_block_size | 8192 | Shows the block size in the write ahead log. wal_buffers | 4MB | Sets the number of disk-page buffers in shared memory for WAL. wal_compression | off | Compresses full-page writes written in WAL file. wal_consistency_checking | | Sets the WAL resource managers for which WAL consistency checks are done. wal_keep_segments | 0 | Sets the number of WAL files held for standby servers. wal_level | replica | Set the level of information written to the WAL. wal_log_hints | off | Writes full pages to WAL when first modified after a checkpoint, even for a non-critical modifications. wal_receiver_status_interval | 10s | Sets the maximum interval between WAL receiver status reports to the primary. wal_receiver_timeout | 1min | Sets the maximum wait time to receive data from the primary. wal_retrieve_retry_interval | 5s | Sets the time to wait before retrying to retrieve WAL after a failed attempt. wal_segment_size | 16MB | Shows the number of pages per write ahead log segment. wal_sender_timeout | 1min | Sets the maximum time to wait for WAL replication. wal_sync_method | fdatasync | Selects the method used for forcing WAL updates to disk. wal_writer_delay | 200ms | Time between WAL flushes performed in the WAL writer. wal_writer_flush_after | 1MB | Amount of WAL written out by WAL writer that triggers a flush. work_mem | 4MB | Sets the maximum memory to be used for query workspaces. xmlbinary | base64 | Sets how binary values are to be encoded in XML. xmloption | content | Sets whether XML data in implicit parsing and serialization operations is to be considered as documents or content fragments. zero_damaged_pages | off | Continues processing past damaged page headers. (270 rows) regexp_split_to_table ----------------------- 1 a A à b c d D e é z (11 rows)