You are _vastly_ over-tuning, IMO.

Do you actually have empirical evidence that each of the settings you are changing is actually yielding a net overall improvement?

Are you actually using MyISAM? Are you _sure_ that enlarging join_buffer_size is helping in your case? Query cache is almost always harmful if you have done your real optimisation appropriately.

Is that mysqltuner output you pasted? It is a downright dangerous tool that far too often gives cripplingly terrible advice.

On Fri, 19 Feb 2021, 08:08 Reindl Harald, <h.reindl@thelounge.net> wrote:

hmmmm - i thought i had the per-thread buffers down to a value which
would be reasonable in case the max number of connections is reached

i guess that two are guilty but with low "myisam_sort_buffer_size"
optimize large tables fail from my expierience and a small
"join_buffer_size" don't work well too

are these *really* allocated unconditional per-threaf or only in case
it's needed?

myisam_sort_buffer_size = 15M
join_buffer_size = 1M

-----------------------------------------------

[--] Up for: 19h 10m 52s (174K q [2.520 qps], 688 conn, TX: 65M, RX: 11M)
[--] Reads / Writes: 69% / 31%
[--] Binary logging is enabled (GTID MODE: ON)
[--] Physical Memory : 31.2G
[--] Max MySQL memory : 123.3G
[--] Other process memory: 0B
[--] Total buffers: 450.0M global + 251.7M per thread (500 max threads)
[--] P_S Max memory usage: 0B
[--] Galera GCache Max memory usage: 0B
[OK] Maximum reached memory usage: 4.9G (15.57% of installed RAM)
[!!] Maximum possible memory usage: 123.3G (394.87% of installed RAM)
[!!] Overall possible memory usage with other process exceeded memory

-----------------------------------------------

max_allowed_packet = 250M
max_tmp_tables = 100
max_connect_errors = 500
max_delayed_threads = 30

max_connections = 500
back_log = 1000

query_cache_limit = 512K
query_cache_min_res_unit = 1024
query_cache_size = 32M
query_cache_type = 1

table_cache = 5000
table_definition_cache = 512
thread_cache_size = 100
tmp_table_size = 256M
max_heap_table_size = 256M

key_buffer_size = 32M
sort_buffer_size = 128K
myisam_sort_buffer_size = 15M
join_buffer_size = 1M
preload_buffer_size = 128K
read_buffer_size = 128K
read_rnd_buffer_size = 128K

innodb_buffer_pool_size = 96M
innodb-defragment = 1
innodb_buffer_pool_dump_at_shutdown = 0
innodb_buffer_pool_instances = 1
innodb_checksum_algorithm = NONE
innodb_doublewrite = 1
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 2
innodb_flush_method = O_DIRECT
innodb_io_capacity = 1000
innodb_lock_wait_timeout = 50
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_max_dirty_pages_pct = 60
innodb_max_purge_lag = 200000
innodb_open_files = 300
innodb_page_cleaners = 1
innodb_purge_threads = 1
innodb_read_io_threads = 4
innodb_stats_on_metadata = 0
innodb_strict_mode = 1
innodb_table_locks = 0
innodb_thread_concurrency = 0
innodb_thread_sleep_delay = 10
innodb_write_io_threads = 4
transaction-isolation = READ-COMMITTED

server-id = 1
expire_logs_days = 21
max_binlog_size = 256M
binlog-format = ROW
binlog_stmt_cache_size = 256K
binlog_cache_size = 256K
sync_binlog = 30
log_bin_compress = 1
binlog-ignore-db = autotest
replicate-ignore-db = autotest

low-priority-updates
skip-symbolic-links
skip-name-resolve
safe-user-create

[mariadb]
aria_pagecache_buffer_size = 32m
aria_sort_buffer_size = 32m
aria_page_checksum = 0
key_cache_segments = 8
thread_handling = pool-of-threads
thread_pool_idle_timeout = 900

-----------------------------------------------

MariaDB [(none)]> show variables where variable_name!='optimizer_switch'
and variable_name!='log_slow_filter' and
variable_name!='session_track_system_variables' and variable_name not
like '%ssl%' and variable_name!='version_source_revision' and
variable_name not like 'log_bin%' and value not like '/var/log%' and
value not like '%/data/%' and value not like '/var/%' and value not like
'/usr%';
+---------------------------------------------+------------------------+
| Variable_name | Value |
+---------------------------------------------+------------------------+
| alter_algorithm | DEFAULT |
| aria_block_size | 8192 |
| aria_checkpoint_interval | 30 |
| aria_checkpoint_log_activity | 1048576 |
| aria_encrypt_tables | OFF |
| aria_force_start_after_recovery_failures | 0 |
| aria_group_commit | none |
| aria_group_commit_interval | 0 |
| aria_log_file_size | 1073741824 |
| aria_log_purge_type | immediate |
| aria_max_sort_file_size | 9223372036853727232 |
| aria_page_checksum | OFF |
| aria_pagecache_age_threshold | 300 |
| aria_pagecache_buffer_size | 33554432 |
| aria_pagecache_division_limit | 100 |
| aria_pagecache_file_hash_size | 512 |
| aria_recover_options | BACKUP,QUICK |
| aria_repair_threads | 1 |
| aria_sort_buffer_size | 33554432 |
| aria_stats_method | nulls_unequal |
| aria_sync_log_dir | NEWFILE |
| aria_used_for_temp_tables | ON |
| auto_increment_increment | 1 |
| auto_increment_offset | 1 |
| autocommit | ON |
| automatic_sp_privileges | ON |
| back_log | 1000 |
| big_tables | OFF |
| bind_address | |
| binlog_annotate_row_events | ON |
| binlog_cache_size | 262144 |
| binlog_checksum | CRC32 |
| binlog_commit_wait_count | 0 |
| binlog_commit_wait_usec | 100000 |
| binlog_direct_non_transactional_updates | OFF |
| binlog_file_cache_size | 16384 |
| binlog_format | ROW |
| binlog_optimize_thread_scheduling | ON |
| binlog_row_image | FULL |
| binlog_stmt_cache_size | 262144 |
| bulk_insert_buffer_size | 8388608 |
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| check_constraint_checks | ON |
| collation_connection | utf8_general_ci |
| collation_database | latin1_german1_ci |
| collation_server | latin1_german1_ci |
| column_compression_threshold | 100 |
| column_compression_zlib_level | 6 |
| column_compression_zlib_strategy | DEFAULT_STRATEGY |
| column_compression_zlib_wrap | OFF |
| completion_type | NO_CHAIN |
| concurrent_insert | ALWAYS |
| connect_timeout | 10 |
| core_file | OFF |
| date_format | %Y-%m-%d |
| datetime_format | %Y-%m-%d %H:%i:%s |
| deadlock_search_depth_long | 15 |
| deadlock_search_depth_short | 4 |
| deadlock_timeout_long | 50000000 |
| deadlock_timeout_short | 10000 |
| debug_no_thread_alarm | OFF |
| default_master_connection | |
| default_regex_flags | |
| default_storage_engine | MyISAM |
| default_tmp_storage_engine | |
| default_week_format | 0 |
| delay_key_write | ALL |
| delayed_insert_limit | 100 |
| delayed_insert_timeout | 300 |
| delayed_queue_size | 1000 |
| div_precision_increment | 4 |
| encrypt_binlog | OFF |
| encrypt_tmp_disk_tables | OFF |
| encrypt_tmp_files | OFF |
| enforce_storage_engine | |
| eq_range_index_dive_limit | 0 |
| error_count | 0 |
| event_scheduler | OFF |
| expensive_subquery_limit | 100 |
| expire_logs_days | 21 |
| explicit_defaults_for_timestamp | OFF |
| external_user | |
| extra_max_connections | 1 |
| extra_port | 0 |
| flush | OFF |
| flush_time | 0 |
| foreign_key_checks | ON |
| ft_boolean_syntax | + -><()~*:""&| |
| ft_max_word_len | 84 |
| ft_min_word_len | 4 |
| ft_query_expansion_limit | 20 |
| ft_stopword_file | (built-in) |
| general_log | OFF |
| group_concat_max_len | 1048576 |
| gtid_binlog_pos | 0-1-2075216 |
| gtid_binlog_state | 0-1-2075216 |
| gtid_current_pos | 0-1-2075216 |
| gtid_domain_id | 0 |
| gtid_ignore_duplicates | OFF |
| gtid_pos_auto_engines | |
| gtid_seq_no | 0 |
| gtid_slave_pos | |
| gtid_strict_mode | OFF |
| have_compress | YES |
| have_crypt | YES |
| have_dynamic_loading | YES |
| have_geometry | YES |
| have_profiling | NO |
| have_query_cache | YES |
| have_rtree_keys | YES |
| have_symlink | DISABLED |
| histogram_size | 0 |
| histogram_type | SINGLE_PREC_HB |
| host_cache_size | 628 |
| hostname | srv-rhsoft.rhsoft.net |
| identity | 0 |
| idle_readonly_transaction_timeout | 0 |
| idle_transaction_timeout | 0 |
| idle_write_transaction_timeout | 0 |
| ignore_builtin_innodb | OFF |
| ignore_db_dirs | |
| in_predicate_conversion_threshold | 1000 |
| in_transaction | 0 |
| init_connect | |
| init_file | |
| init_slave | |
| innodb_adaptive_flushing | ON |
| innodb_adaptive_flushing_lwm | 10.000000 |
| innodb_adaptive_hash_index | ON |
| innodb_adaptive_hash_index_parts | 8 |
| innodb_adaptive_max_sleep_delay | 150000 |
| innodb_autoextend_increment | 64 |
| innodb_autoinc_lock_mode | 1 |
| innodb_background_scrub_data_check_interval | 3600 |
| innodb_background_scrub_data_compressed | OFF |
| innodb_background_scrub_data_interval | 604800 |
| innodb_background_scrub_data_uncompressed | OFF |
| innodb_buf_dump_status_frequency | 0 |
| innodb_buffer_pool_chunk_size | 100663296 |
| innodb_buffer_pool_dump_at_shutdown | OFF |
| innodb_buffer_pool_dump_now | OFF |
| innodb_buffer_pool_dump_pct | 25 |
| innodb_buffer_pool_filename | ib_buffer_pool |
| innodb_buffer_pool_instances | 1 |
| innodb_buffer_pool_load_abort | OFF |
| innodb_buffer_pool_load_at_startup | ON |
| innodb_buffer_pool_load_now | OFF |
| innodb_buffer_pool_size | 100663296 |
| innodb_change_buffer_max_size | 25 |
| innodb_change_buffering | all |
| innodb_checksum_algorithm | none |
| innodb_checksums | ON |
| innodb_cmp_per_index_enabled | OFF |
| innodb_commit_concurrency | 0 |
| innodb_compression_algorithm | zlib |
| innodb_compression_default | OFF |
| innodb_compression_failure_threshold_pct | 5 |
| innodb_compression_level | 6 |
| innodb_compression_pad_pct_max | 50 |
| innodb_concurrency_tickets | 5000 |
| innodb_data_file_path | ibdata1:12M:autoextend |
| innodb_data_home_dir | |
| innodb_deadlock_detect | ON |
| innodb_default_encryption_key_id | 1 |
| innodb_default_row_format | dynamic |
| innodb_defragment | ON |
| innodb_defragment_fill_factor | 0.900000 |
| innodb_defragment_fill_factor_n_recs | 20 |
| innodb_defragment_frequency | 40 |
| innodb_defragment_n_pages | 7 |
| innodb_defragment_stats_accuracy | 0 |
| innodb_disable_sort_file_cache | OFF |
| innodb_doublewrite | ON |
| innodb_encrypt_log | OFF |
| innodb_encrypt_tables | OFF |
| innodb_encrypt_temporary_tables | OFF |
| innodb_encryption_rotate_key_age | 1 |
| innodb_encryption_rotation_iops | 100 |
| innodb_encryption_threads | 0 |
| innodb_fast_shutdown | 1 |
| innodb_fatal_semaphore_wait_threshold | 600 |
| innodb_file_format | |
| innodb_file_per_table | ON |
| innodb_fill_factor | 100 |
| innodb_flush_log_at_timeout | 1 |
| innodb_flush_log_at_trx_commit | 2 |
| innodb_flush_method | O_DIRECT |
| innodb_flush_neighbors | 1 |
| innodb_flush_sync | ON |
| innodb_flushing_avg_loops | 30 |
| innodb_force_load_corrupted | OFF |
| innodb_force_primary_key | OFF |
| innodb_force_recovery | 0 |
| innodb_ft_aux_table | |
| innodb_ft_cache_size | 8000000 |
| innodb_ft_enable_diag_print | OFF |
| innodb_ft_enable_stopword | ON |
| innodb_ft_max_token_size | 84 |
| innodb_ft_min_token_size | 3 |
| innodb_ft_num_word_optimize | 2000 |
| innodb_ft_result_cache_limit | 2000000000 |
| innodb_ft_server_stopword_table | |
| innodb_ft_sort_pll_degree | 2 |
| innodb_ft_total_cache_size | 640000000 |
| innodb_ft_user_stopword_table | |
| innodb_idle_flush_pct | 100 |
| innodb_immediate_scrub_data_uncompressed | OFF |
| innodb_instant_alter_column_allowed | add_last |
| innodb_io_capacity | 1000 |
| innodb_io_capacity_max | 2000 |
| innodb_large_prefix | |
| innodb_lock_schedule_algorithm | fcfs |
| innodb_lock_wait_timeout | 50 |
| innodb_locks_unsafe_for_binlog | OFF |
| innodb_log_buffer_size | 2097152 |
| innodb_log_checksums | ON |
| innodb_log_compressed_pages | ON |
| innodb_log_file_size | 33554432 |
| innodb_log_files_in_group | 2 |
| innodb_log_group_home_dir | ./ |
| innodb_log_optimize_ddl | OFF |
| innodb_log_write_ahead_size | 8192 |
| innodb_lru_scan_depth | 1024 |
| innodb_max_dirty_pages_pct | 60.000000 |
| innodb_max_dirty_pages_pct_lwm | 0.000000 |
| innodb_max_purge_lag | 200000 |
| innodb_max_purge_lag_delay | 0 |
| innodb_max_purge_lag_wait | 4294967295 |
| innodb_max_undo_log_size | 10485760 |
| innodb_monitor_disable | |
| innodb_monitor_enable | |
| innodb_monitor_reset | |
| innodb_monitor_reset_all | |
| innodb_old_blocks_pct | 37 |
| innodb_old_blocks_time | 1000 |
| innodb_online_alter_log_max_size | 134217728 |
| innodb_open_files | 300 |
| innodb_optimize_fulltext_only | OFF |
| innodb_page_cleaners | 1 |
| innodb_page_size | 16384 |
| innodb_prefix_index_cluster_optimization | OFF |
| innodb_print_all_deadlocks | OFF |
| innodb_purge_batch_size | 300 |
| innodb_purge_rseg_truncate_frequency | 128 |
| innodb_purge_threads | 1 |
| innodb_random_read_ahead | OFF |
| innodb_read_ahead_threshold | 56 |
| innodb_read_io_threads | 4 |
| innodb_read_only | OFF |
| innodb_replication_delay | 0 |
| innodb_rollback_on_timeout | OFF |
| innodb_rollback_segments | 128 |
| innodb_scrub_log | OFF |
| innodb_scrub_log_speed | 256 |
| innodb_sort_buffer_size | 1048576 |
| innodb_spin_wait_delay | 4 |
| innodb_stats_auto_recalc | ON |
| innodb_stats_include_delete_marked | OFF |
| innodb_stats_method | nulls_equal |
| innodb_stats_modified_counter | 0 |
| innodb_stats_on_metadata | OFF |
| innodb_stats_persistent | ON |
| innodb_stats_persistent_sample_pages | 20 |
| innodb_stats_sample_pages | 8 |
| innodb_stats_traditional | ON |
| innodb_stats_transient_sample_pages | 8 |
| innodb_status_output | OFF |
| innodb_status_output_locks | OFF |
| innodb_strict_mode | ON |
| innodb_sync_array_size | 1 |
| innodb_sync_spin_loops | 30 |
| innodb_table_locks | OFF |
| innodb_temp_data_file_path | ibtmp1:12M:autoextend |
| innodb_thread_concurrency | 0 |
| innodb_thread_sleep_delay | 10 |
| innodb_tmpdir | |
| innodb_undo_directory | ./ |
| innodb_undo_log_truncate | OFF |
| innodb_undo_logs | 128 |
| innodb_undo_tablespaces | 0 |
| innodb_use_atomic_writes | ON |
| innodb_use_native_aio | ON |
| innodb_version | 10.3.26 |
| innodb_write_io_threads | 4 |
| insert_id | 0 |
| interactive_timeout | 86400 |
| join_buffer_size | 1048576 |
| join_buffer_space_limit | 2097152 |
| join_cache_level | 2 |
| keep_files_on_create | OFF |
| key_buffer_size | 33554432 |
| key_cache_age_threshold | 300 |
| key_cache_block_size | 1024 |
| key_cache_division_limit | 100 |
| key_cache_file_hash_size | 512 |
| key_cache_segments | 8 |
| large_files_support | ON |
| large_page_size | 0 |
| large_pages | OFF |
| last_gtid | |
| last_insert_id | 0 |
| lc_messages | en_US |
| lc_messages_dir | |
| lc_time_names | en_US |
| license | GPL |
| local_infile | OFF |
| lock_wait_timeout | 86400 |
| locked_in_memory | OFF |
| log_disabled_statements | sp |
| log_output | FILE |
| log_queries_not_using_indexes | OFF |
| log_slave_updates | OFF |
| log_slow_admin_statements | ON |
| log_slow_disabled_statements | sp |
| log_slow_rate_limit | 1 |
| log_slow_slave_statements | ON |
| log_slow_verbosity | |
| log_tc_size | 24576 |
| log_warnings | 1 |
| long_query_time | 1.000000 |
| low_priority_updates | ON |
| lower_case_file_system | OFF |
| lower_case_table_names | 1 |
| master_verify_checksum | OFF |
| max_allowed_packet | 262144000 |
| max_binlog_cache_size | 18446744073709547520 |
| max_binlog_size | 268435456 |
| max_binlog_stmt_cache_size | 18446744073709547520 |
| max_connect_errors | 500 |
| max_connections | 500 |
| max_delayed_threads | 30 |
| max_digest_length | 1024 |
| max_error_count | 64 |
| max_heap_table_size | 268435456 |
| max_insert_delayed_threads | 30 |
| max_join_size | 18446744073709551615 |
| max_length_for_sort_data | 1024 |
| max_long_data_size | 262144000 |
| max_prepared_stmt_count | 16382 |
| max_recursive_iterations | 4294967295 |
| max_relay_log_size | 268435456 |
| max_seeks_for_key | 4294967295 |
| max_session_mem_used | 9223372036854775807 |
| max_sort_length | 1024 |
| max_sp_recursion_depth | 0 |
| max_statement_time | 0.000000 |
| max_tmp_tables | 100 |
| max_user_connections | 0 |
| max_write_lock_count | 4294967295 |
| metadata_locks_cache_size | 1024 |
| metadata_locks_hash_instances | 8 |
| min_examined_row_limit | 0 |
| mrr_buffer_size | 262144 |
| multi_range_count | 256 |
| myisam_block_size | 1024 |
| myisam_data_pointer_size | 6 |
| myisam_max_sort_file_size | 9223372036853727232 |
| myisam_mmap_size | 18446744073709551615 |
| myisam_recover_options | FORCE |
| myisam_repair_threads | 1 |
| myisam_sort_buffer_size | 15728640 |
| myisam_stats_method | NULLS_UNEQUAL |
| myisam_use_mmap | ON |
| mysql56_temporal_format | ON |
| net_buffer_length | 16384 |
| net_read_timeout | 30 |
| net_retry_count | 10 |
| net_write_timeout | 60 |
| old | OFF |
| old_alter_table | DEFAULT |
| old_mode | |
| old_passwords | OFF |
| open_files_limit | 500000 |
| optimizer_prune_level | 1 |
| optimizer_search_depth | 62 |
| optimizer_selectivity_sampling_limit | 100 |
| optimizer_use_condition_selectivity | 1 |
| pid_file | /dev/null |
| plugin_maturity | gamma |
| port | 3306 |
| preload_buffer_size | 131072 |
| progress_report_time | 5 |
| protocol_version | 10 |
| proxy_protocol_networks | |
| proxy_user | |
| pseudo_slave_mode | OFF |
| pseudo_thread_id | 727 |
| query_alloc_block_size | 16384 |
| query_cache_limit | 524288 |
| query_cache_min_res_unit | 1024 |
| query_cache_size | 33554432 |
| query_cache_strip_comments | OFF |
| query_cache_type | ON |
| query_cache_wlock_invalidate | OFF |
| query_prealloc_size | 24576 |
| rand_seed1 | 577605648 |
| rand_seed2 | 1011664119 |
| range_alloc_block_size | 4096 |
| read_binlog_speed_limit | 0 |
| read_buffer_size | 131072 |
| read_only | OFF |
| read_rnd_buffer_size | 131072 |
| relay_log | |
| relay_log_basename | |
| relay_log_index | |
| relay_log_info_file | relay-log.info |
| relay_log_purge | ON |
| relay_log_recovery | OFF |
| relay_log_space_limit | 0 |
| replicate_annotate_row_events | ON |
| replicate_do_db | |
| replicate_do_table | |
| replicate_events_marked_for_skip | REPLICATE |
| replicate_ignore_db | autotest |
| replicate_ignore_table | |
| replicate_wild_do_table | |
| replicate_wild_ignore_table | |
| report_host | |
| report_password | |
| report_port | 3306 |
| report_user | |
| rowid_merge_buff_size | 8388608 |
| rpl_semi_sync_master_enabled | OFF |
| rpl_semi_sync_master_timeout | 10000 |
| rpl_semi_sync_master_trace_level | 32 |
| rpl_semi_sync_master_wait_no_slave | ON |
| rpl_semi_sync_master_wait_point | AFTER_COMMIT |
| rpl_semi_sync_slave_delay_master | OFF |
| rpl_semi_sync_slave_enabled | OFF |
| rpl_semi_sync_slave_kill_conn_timeout | 5 |
| rpl_semi_sync_slave_trace_level | 32 |
| secure_auth | ON |
| secure_file_priv | |
| secure_timestamp | NO |
| server_id | 1 |
| session_track_schema | ON |
| session_track_state_change | OFF |
| session_track_transaction_info | OFF |
| skip_external_locking | ON |
| skip_name_resolve | ON |
| skip_networking | OFF |
| skip_parallel_replication | OFF |
| skip_replication | OFF |
| skip_show_database | OFF |
| slave_compressed_protocol | OFF |
| slave_ddl_exec_mode | IDEMPOTENT |
| slave_domain_parallel_threads | 0 |
| slave_exec_mode | STRICT |
| slave_load_tmpdir | /tmp |
| slave_max_allowed_packet | 1073741824 |
| slave_net_timeout | 60 |
| slave_parallel_max_queued | 131072 |
| slave_parallel_mode | conservative |
| slave_parallel_threads | 0 |
| slave_parallel_workers | 0 |
| slave_run_triggers_for_rbr | NO |
| slave_skip_errors | OFF |
| slave_sql_verify_checksum | ON |
| slave_transaction_retries | 10 |
| slave_transaction_retry_errors | 1213,1205 |
| slave_transaction_retry_interval | 0 |
| slave_type_conversions | |
| slow_launch_time | 2 |
| slow_query_log | ON |
| sort_buffer_size | 131072 |
| sql_auto_is_null | OFF |
| sql_big_selects | ON |
| sql_buffer_result | OFF |
| sql_log_bin | ON |
| sql_log_off | OFF |
| sql_mode | STRICT_ALL_TABLES |
| sql_notes | ON |
| sql_quote_show_create | ON |
| sql_safe_updates | OFF |
| sql_select_limit | 18446744073709551615 |
| sql_slave_skip_counter | 0 |
| sql_warnings | OFF |
| standard_compliant_cte | ON |
| storage_engine | MyISAM |
| stored_program_cache | 256 |
| strict_password_validation | ON |
| sync_binlog | 30 |
| sync_frm | OFF |
| sync_master_info | 10000 |
| sync_relay_log | 10000 |
| sync_relay_log_info | 10000 |
| system_time_zone | CET |
| system_versioning_alter_history | ERROR |
| system_versioning_asof | DEFAULT |
| table_definition_cache | 512 |
| table_open_cache | 5000 |
| table_open_cache_instances | 8 |
| tcp_keepalive_interval | 0 |
| tcp_keepalive_probes | 0 |
| tcp_keepalive_time | 0 |
| thread_cache_size | 100 |
| thread_concurrency | 10 |
| thread_handling | pool-of-threads |
| thread_pool_idle_timeout | 900 |
| thread_pool_max_threads | 65536 |
| thread_pool_oversubscribe | 3 |
| thread_pool_prio_kickup_timer | 1000 |
| thread_pool_priority | auto |
| thread_pool_size | 8 |
| thread_pool_stall_limit | 500 |
| thread_stack | 299008 |
| time_format | %H:%i:%s |
| time_zone | Europe/Vienna |
| timed_mutexes | OFF |
| timestamp | 1613721594.324895 |
| tmp_disk_table_size | 18446744073709551615 |
| tmp_memory_table_size | 268435456 |
| tmp_table_size | 268435456 |
| tmpdir | /tmp |
| transaction_alloc_block_size | 8192 |
| transaction_prealloc_size | 4096 |
| tx_isolation | READ-COMMITTED |
| tx_read_only | OFF |
| unique_checks | ON |
| updatable_views_with_limit | YES |
| use_stat_tables | NEVER |
| userstat | OFF |
| version | 10.3.26-MariaDB-log |
| version_comment | thelounge |
| version_compile_machine | x86_64 |
| version_compile_os | Linux |
| version_malloc_library | system |
| wait_timeout | 86400 |
| warning_count | 0 |
+---------------------------------------------+------------------------+
535 rows in set (0.002 sec)

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