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Re: Mysql high memory usage on centos 7 (migrating from centos 5)
Posted by: Tamas Szabo
Date: March 03, 2018 05:54AM

show variables output:

auto_increment_increment 1
auto_increment_offset 1
autocommit ON
automatic_sp_privileges ON
avoid_temporal_upgrade OFF
back_log 90
basedir /usr/
big_tables OFF
bind_address *
binlog_cache_size 67108864
binlog_checksum CRC32
binlog_direct_non_transactional_updates OFF
binlog_error_action IGNORE_ERROR
binlog_format ROW
binlog_gtid_simple_recovery OFF
binlog_max_flush_queue_time 0
binlog_order_commits ON
binlog_row_image FULL
binlog_rows_query_log_events OFF
binlog_stmt_cache_size 32768
binlogging_impossible_mode IGNORE_ERROR
block_encryption_mode aes-128-ecb
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
character_sets_dir /usr/share/mysql/charsets/
collation_connection utf8_general_ci
collation_database latin1_swedish_ci
collation_server latin1_swedish_ci
completion_type NO_CHAIN
concurrent_insert AUTO
connect_timeout 5
core_file OFF
datadir /var/lib/mysql/
date_format %Y-%m-%d
datetime_format %Y-%m-%d %H:%i:%s
default_storage_engine InnoDB
default_tmp_storage_engine InnoDB
default_week_format 0
delay_key_write ON
delayed_insert_limit 100
delayed_insert_timeout 300
delayed_queue_size 1000
disconnect_on_expired_password ON
div_precision_increment 4
end_markers_in_json OFF
enforce_gtid_consistency OFF
eq_range_index_dive_limit 10
error_count 0
event_scheduler ON
expire_logs_days 2
explicit_defaults_for_timestamp ON
external_user
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 1024
gtid_executed
gtid_mode OFF
gtid_next AUTOMATIC
gtid_owned
gtid_purged
have_compress YES
have_crypt YES
have_dynamic_loading YES
have_geometry YES
have_openssl YES
have_profiling YES
have_query_cache YES
have_rtree_keys YES
have_ssl YES
have_symlink YES
host_cache_size 328
identity 0
ignore_builtin_innodb OFF
ignore_db_dirs
init_connect
init_file
init_slave
innodb_adaptive_flushing ON
innodb_adaptive_flushing_lwm 10
innodb_adaptive_hash_index ON
innodb_adaptive_max_sleep_delay 150000
innodb_additional_mem_pool_size 8388608
innodb_api_bk_commit_interval 5
innodb_api_disable_rowlock OFF
innodb_api_enable_binlog OFF
innodb_api_enable_mdl OFF
innodb_api_trx_level 0
innodb_autoextend_increment 64
innodb_autoinc_lock_mode 1
innodb_buffer_pool_dump_at_shutdown ON
innodb_buffer_pool_dump_now OFF
innodb_buffer_pool_filename ib_buffer_pool
innodb_buffer_pool_instances 8
innodb_buffer_pool_load_abort OFF
innodb_buffer_pool_load_at_startup ON
innodb_buffer_pool_load_now OFF
innodb_buffer_pool_size 4294967296
innodb_change_buffer_max_size 25
innodb_change_buffering all
innodb_checksum_algorithm innodb
innodb_checksums ON
innodb_cmp_per_index_enabled OFF
innodb_commit_concurrency 0
innodb_compression_failure_threshold_pct 5
innodb_compression_level 6
innodb_compression_pad_pct_max 50
innodb_concurrency_tickets 5000
innodb_data_file_path ibdata1:3050M;ibdata2:25M:autoextend
innodb_data_home_dir
innodb_disable_sort_file_cache OFF
innodb_doublewrite ON
innodb_fast_shutdown 1
innodb_file_format Antelope
innodb_file_format_check ON
innodb_file_format_max Antelope
innodb_file_per_table ON
innodb_flush_log_at_timeout 1
innodb_flush_log_at_trx_commit 1
innodb_flush_method
innodb_flush_neighbors 1
innodb_flushing_avg_loops 30
innodb_force_load_corrupted 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_io_capacity 200
innodb_io_capacity_max 2000
innodb_large_prefix OFF
innodb_lock_wait_timeout 50
innodb_locks_unsafe_for_binlog OFF
innodb_log_buffer_size 8388608
innodb_log_compressed_pages ON
innodb_log_file_size 268435456
innodb_log_files_in_group 2
innodb_log_group_home_dir ./
innodb_lru_scan_depth 1024
innodb_max_dirty_pages_pct 75
innodb_max_dirty_pages_pct_lwm 0
innodb_max_purge_lag 0
innodb_max_purge_lag_delay 0
innodb_mirrored_log_groups 1
innodb_monitor_disable
innodb_monitor_enable
innodb_monitor_reset
innodb_monitor_reset_all
innodb_numa_interleave OFF
innodb_old_blocks_pct 37
innodb_old_blocks_time 1000
innodb_online_alter_log_max_size 134217728
innodb_open_files 6144
innodb_optimize_fulltext_only OFF
innodb_page_size 16384
innodb_print_all_deadlocks OFF
innodb_purge_batch_size 300
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_sort_buffer_size 1048576
innodb_spin_wait_delay 6
innodb_stats_auto_recalc ON
innodb_stats_include_delete_marked OFF
innodb_stats_method nulls_equal
innodb_stats_on_metadata OFF
innodb_stats_persistent ON
innodb_stats_persistent_sample_pages 20
innodb_stats_sample_pages 8
innodb_stats_transient_sample_pages 8
innodb_status_output OFF
innodb_status_output_locks OFF
innodb_strict_mode OFF
innodb_support_xa ON
innodb_sync_array_size 1
innodb_sync_spin_loops 30
innodb_table_locks ON
innodb_thread_concurrency 0
innodb_thread_sleep_delay 10000
innodb_tmpdir
innodb_undo_directory .
innodb_undo_logs 128
innodb_undo_tablespaces 0
innodb_use_native_aio ON
innodb_use_sys_malloc ON
innodb_version 5.6.39
innodb_write_io_threads 4
insert_id 0
interactive_timeout 28800
join_buffer_size 7340032
keep_files_on_create OFF
key_buffer_size 536870912
key_cache_age_threshold 300
key_cache_block_size 1024
key_cache_division_limit 100
large_files_support ON
large_page_size 0
large_pages OFF
last_insert_id 0
lc_messages en_US
lc_messages_dir /usr/share/mysql/
lc_time_names en_US
license GPL
local_infile ON
lock_wait_timeout 31536000
locked_in_memory OFF
log_bin ON
log_bin_basename /var/lib/mysql/mysql-bin
log_bin_index /var/lib/mysql/mysql-bin.index
log_bin_trust_function_creators ON
log_bin_use_v1_row_events OFF
log_error ./xxxxxxxxxxxxxx.err
log_output FILE
log_queries_not_using_indexes OFF
log_slave_updates OFF
log_slow_admin_statements OFF
log_slow_slave_statements OFF
log_throttle_queries_not_using_indexes 0
log_warnings 2
long_query_time 3.000000
low_priority_updates OFF
lower_case_file_system OFF
lower_case_table_names 0
master_info_repository FILE
master_verify_checksum OFF
max_allowed_packet 34603008
max_binlog_cache_size 18446744073709547520
max_binlog_size 209715200
max_binlog_stmt_cache_size 18446744073709547520
max_connect_errors 100000
max_connections 200
max_delayed_threads 20
max_digest_length 1024
max_error_count 64
max_heap_table_size 16777216
max_insert_delayed_threads 20
max_join_size 18446744073709551615
max_length_for_sort_data 1024
max_prepared_stmt_count 16382
max_relay_log_size 0
max_seeks_for_key 18446744073709551615
max_sort_length 1024
max_sp_recursion_depth 0
max_tmp_tables 32
max_user_connections 30
max_write_lock_count 18446744073709551615
metadata_locks_cache_size 1024
metadata_locks_hash_instances 8
min_examined_row_limit 0
multi_range_count 256
myisam_data_pointer_size 6
myisam_max_sort_file_size 9223372036853727232
myisam_mmap_size 18446744073709551615
myisam_recover_options OFF
myisam_repair_threads 1
myisam_sort_buffer_size 8388608
myisam_stats_method nulls_unequal
myisam_use_mmap OFF
net_buffer_length 16384
net_read_timeout 30
net_retry_count 10
net_write_timeout 60
new OFF
old OFF
old_alter_table OFF
old_passwords 0
open_files_limit 102400
optimizer_prune_level 1
optimizer_search_depth 62
optimizer_switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=on,block_nested_loop=on,batched_key_access=off,materialization=on,semijoin=on,loosescan=on,firstmatch=on,subquery_materialization_cost_based=on,use_index_extensions=on
optimizer_trace enabled=off,one_line=off
optimizer_trace_features greedy_search=on,range_optimizer=on,dynamic_range=on,repeated_subselect=on
optimizer_trace_limit 1
optimizer_trace_max_mem_size 16384
optimizer_trace_offset -1
performance_schema OFF
performance_schema_accounts_size -1
performance_schema_digests_size -1
performance_schema_events_stages_history_long_size -1
performance_schema_events_stages_history_size -1
performance_schema_events_statements_history_long_size -1
performance_schema_events_statements_history_size -1
performance_schema_events_waits_history_long_size -1
performance_schema_events_waits_history_size -1
performance_schema_hosts_size -1
performance_schema_max_cond_classes 80
performance_schema_max_cond_instances -1
performance_schema_max_digest_length 1024
performance_schema_max_file_classes 50
performance_schema_max_file_handles 32768
performance_schema_max_file_instances -1
performance_schema_max_mutex_classes 200
performance_schema_max_mutex_instances -1
performance_schema_max_rwlock_classes 40
performance_schema_max_rwlock_instances -1
performance_schema_max_socket_classes 10
performance_schema_max_socket_instances -1
performance_schema_max_stage_classes 150
performance_schema_max_statement_classes 168
performance_schema_max_table_handles -1
performance_schema_max_table_instances -1
performance_schema_max_thread_classes 50
performance_schema_max_thread_instances -1
performance_schema_session_connect_attrs_size -1
performance_schema_setup_actors_size 100
performance_schema_setup_objects_size 100
performance_schema_users_size -1
pid_file xxxxxxxxxxxxxxxxxx.pid
plugin_dir /usr/lib64/mysql/plugin/
port 3306
preload_buffer_size 32768
profiling OFF
profiling_history_size 15
protocol_version 10
proxy_user
pseudo_slave_mode OFF
pseudo_thread_id 885856
query_alloc_block_size 8192
query_cache_limit 6291456
query_cache_min_res_unit 3072
query_cache_size 1073741824
query_cache_type ON
query_cache_wlock_invalidate OFF
query_prealloc_size 8192
rand_seed1 0
rand_seed2 0
range_alloc_block_size 4096
read_buffer_size 6291456
read_only OFF
read_rnd_buffer_size 6291456
relay_log
relay_log_basename
relay_log_index
relay_log_info_file relay-log.info
relay_log_info_repository FILE
relay_log_purge ON
relay_log_recovery OFF
relay_log_space_limit 0
report_host
report_password
report_port 3306
report_user
rpl_stop_slave_timeout 31536000
secure_auth ON
secure_file_priv /var/lib/mysql-files/
server_id 1
server_id_bits 32
server_uuid a421580c-6b41-11e6-8e42-aa00148a7801
show_old_temporals OFF
simplified_binlog_gtid_recovery OFF
skip_external_locking ON
skip_name_resolve OFF
skip_networking OFF
skip_show_database OFF
slave_allow_batching OFF
slave_checkpoint_group 512
slave_checkpoint_period 300
slave_compressed_protocol OFF
slave_exec_mode STRICT
slave_load_tmpdir /tmp
slave_max_allowed_packet 1073741824
slave_net_timeout 3600
slave_parallel_workers 0
slave_pending_jobs_size_max 16777216
slave_rows_search_algorithms TABLE_SCAN,INDEX_SCAN
slave_skip_errors OFF
slave_sql_verify_checksum ON
slave_transaction_retries 10
slave_type_conversions
slow_launch_time 2
slow_query_log ON
slow_query_log_file /var/lib/mysql/slow_query_log
socket /var/lib/mysql/mysql.sock
sort_buffer_size 6291456
sql_auto_is_null OFF
sql_big_selects ON
sql_buffer_result OFF
sql_log_bin ON
sql_log_off OFF
sql_mode NO_ENGINE_SUBSTITUTION
sql_notes ON
sql_quote_show_create ON
sql_safe_updates OFF
sql_select_limit 18446744073709551615
sql_slave_skip_counter 0
sql_warnings OFF
ssl_ca /etc/mysql/ca-cert.pem
ssl_capath
ssl_cert /etc/mysql/server-cert.pem
ssl_cipher
ssl_crl
ssl_crlpath
ssl_key /etc/mysql/server-key.pem
storage_engine InnoDB
stored_program_cache 256
sync_binlog 1
sync_frm ON
sync_master_info 10000
sync_relay_log 10000
sync_relay_log_info 10000
system_time_zone CET
table_definition_cache 40960
table_open_cache 6144
table_open_cache_instances 1
thread_cache_size 128
thread_concurrency 10
thread_handling one-thread-per-connection
thread_stack 262144
time_format %H:%i:%s
time_zone SYSTEM
timed_mutexes OFF
timestamp 1520077574.266571
tmp_table_size 16777216
tmpdir /tmp
transaction_alloc_block_size 8192
transaction_allow_batching OFF
transaction_prealloc_size 4096
tx_isolation REPEATABLE-READ
tx_read_only OFF
unique_checks ON
updatable_views_with_limit YES
version 5.6.39-log
version_comment MySQL Community Server (GPL)
version_compile_machine x86_64
version_compile_os Linux
wait_timeout 300
warning_count 0

show global status output:

Aborted_clients 88
Aborted_connects 18747
Binlog_cache_disk_use 0
Binlog_cache_use 1004147
Binlog_stmt_cache_disk_use 4874
Binlog_stmt_cache_use 493471
Bytes_received 16628212136
Bytes_sent 317923689863
Com_admin_commands 67505
Com_assign_to_keycache 0
Com_alter_db 1
Com_alter_db_upgrade 0
Com_alter_event 0
Com_alter_function 0
Com_alter_procedure 0
Com_alter_server 0
Com_alter_table 12747
Com_alter_tablespace 0
Com_alter_user 0
Com_analyze 0
Com_begin 1587
Com_binlog 0
Com_call_procedure 0
Com_change_db 776967
Com_change_master 0
Com_check 0
Com_checksum 0
Com_commit 1549
Com_create_db 5
Com_create_event 0
Com_create_function 0
Com_create_index 0
Com_create_procedure 0
Com_create_server 0
Com_create_table 7134
Com_create_trigger 0
Com_create_udf 0
Com_create_user 0
Com_create_view 0
Com_dealloc_sql 0
Com_delete 265173
Com_delete_multi 9977
Com_do 0
Com_drop_db 7
Com_drop_event 0
Com_drop_function 0
Com_drop_index 0
Com_drop_procedure 0
Com_drop_server 0
Com_drop_table 264
Com_drop_trigger 0
Com_drop_user 1390
Com_drop_view 0
Com_empty_query 4
Com_execute_sql 0
Com_flush 707
Com_get_diagnostics 0
Com_grant 445
Com_ha_close 0
Com_ha_open 0
Com_ha_read 0
Com_help 0
Com_insert 705592
Com_insert_select 4122
Com_install_plugin 0
Com_kill 0
Com_load 0
Com_lock_tables 301
Com_optimize 220
Com_preload_keys 0
Com_prepare_sql 0
Com_purge 56
Com_purge_before_date 0
Com_release_savepoint 98
Com_rename_table 0
Com_rename_user 0
Com_repair 0
Com_replace 16220
Com_replace_select 0
Com_reset 0
Com_resignal 0
Com_revoke 0
Com_revoke_all 0
Com_rollback 0
Com_rollback_to_savepoint 0
Com_savepoint 98
Com_select 9302941
Com_set_option 2744471
Com_signal 0
Com_show_binlog_events 0
Com_show_binlogs 11
Com_show_charsets 0
Com_show_collations 0
Com_show_create_db 16
Com_show_create_event 0
Com_show_create_func 0
Com_show_create_proc 0
Com_show_create_table 13462
Com_show_create_trigger 4
Com_show_databases 862
Com_show_engine_logs 0
Com_show_engine_mutex 0
Com_show_engine_status 2
Com_show_events 4
Com_show_errors 0
Com_show_fields 567403
Com_show_function_code 0
Com_show_function_status 14
Com_show_grants 2075
Com_show_keys 3029
Com_show_master_status 29
Com_show_open_tables 0
Com_show_plugins 0
Com_show_privileges 0
Com_show_procedure_code 0
Com_show_procedure_status 14
Com_show_processlist 688
Com_show_profile 0
Com_show_profiles 0
Com_show_relaylog_events 0
Com_show_slave_hosts 57
Com_show_slave_status 30
Com_show_status 49536
Com_show_storage_engines 1
Com_show_table_status 4544
Com_show_tables 115680
Com_show_triggers 3498
Com_show_variables 3092
Com_show_warnings 0
Com_slave_start 0
Com_slave_stop 0
Com_stmt_close 5455
Com_stmt_execute 5524
Com_stmt_fetch 0
Com_stmt_prepare 5524
Com_stmt_reprepare 0
Com_stmt_reset 2593
Com_stmt_send_long_data 1023
Com_truncate 2860
Com_uninstall_plugin 0
Com_unlock_tables 301
Com_update 872236
Com_update_multi 470
Com_xa_commit 0
Com_xa_end 0
Com_xa_prepare 0
Com_xa_recover 0
Com_xa_rollback 0
Com_xa_start 0
Compression OFF
Connection_errors_accept 0
Connection_errors_internal 0
Connection_errors_max_connections 0
Connection_errors_peer_address 0
Connection_errors_select 0
Connection_errors_tcpwrap 0
Connections 887044
Created_tmp_disk_tables 1222371
Created_tmp_files 5345
Created_tmp_tables 1954390
Delayed_errors 0
Delayed_insert_threads 0
Delayed_writes 0
Flush_commands 1
Handler_commit 6817788
Handler_delete 341543
Handler_discover 0
Handler_external_lock 28138821
Handler_mrr_init 0
Handler_prepare 2058188
Handler_read_first 1031623
Handler_read_key 2252929235
Handler_read_last 88311
Handler_read_next 6944811570
Handler_read_prev 3410572908
Handler_read_rnd 626343381
Handler_read_rnd_next 11609121749
Handler_rollback 3349
Handler_savepoint 196
Handler_savepoint_rollback 0
Handler_update 134858834
Handler_write 628645703
Innodb_buffer_pool_dump_status not started
Innodb_buffer_pool_load_status Buffer pool(s) load completed at 180301 4:20:27
Innodb_buffer_pool_pages_data 249359
Innodb_buffer_pool_bytes_data 4085497856
Innodb_buffer_pool_pages_dirty 0
Innodb_buffer_pool_bytes_dirty 0
Innodb_buffer_pool_pages_flushed 2468685
Innodb_buffer_pool_pages_free 8192
Innodb_buffer_pool_pages_misc 4585
Innodb_buffer_pool_pages_total 262136
Innodb_buffer_pool_read_ahead_rnd 0
Innodb_buffer_pool_read_ahead 8918
Innodb_buffer_pool_read_ahead_evicted 0
Innodb_buffer_pool_read_requests 3194818317
Innodb_buffer_pool_reads 239264
Innodb_buffer_pool_wait_free 0
Innodb_buffer_pool_write_requests 20275177
Innodb_data_fsyncs 3223740
Innodb_data_pending_fsyncs 0
Innodb_data_pending_reads 0
Innodb_data_pending_writes 0
Innodb_data_read 4118450176
Innodb_data_reads 284292
Innodb_data_writes 4574566
Innodb_data_written 85027520512
Innodb_dblwr_pages_written 2468685
Innodb_dblwr_writes 799654
Innodb_have_atomic_builtins ON
Innodb_log_waits 0
Innodb_log_write_requests 7439987
Innodb_log_writes 1240150
Innodb_os_log_fsyncs 1285428
Innodb_os_log_pending_fsyncs 0
Innodb_os_log_pending_writes 0
Innodb_os_log_written 4110879744
Innodb_page_size 16384
Innodb_pages_created 80132
Innodb_pages_read 251365
Innodb_pages_written 2468685
Innodb_row_lock_current_waits 0
Innodb_row_lock_time 22460
Innodb_row_lock_time_avg 10
Innodb_row_lock_time_max 7074
Innodb_row_lock_waits 2128
Innodb_rows_deleted 251405
Innodb_rows_inserted 2221816
Innodb_rows_read 12946883496
Innodb_rows_updated 591081
Innodb_num_open_files 6075
Innodb_truncated_status_writes 0
Innodb_available_undo_logs 128
Key_blocks_not_flushed 0
Key_blocks_unused 381870
Key_blocks_used 140335
Key_read_requests 5737070692
Key_reads 1538906
Key_write_requests 3175787
Key_writes 791897
Last_query_cost 0.000000
Last_query_partial_plans 0
Max_used_connections 48
Not_flushed_delayed_rows 0
Open_files 5484
Open_streams 0
Open_table_definitions 40960
Open_tables 6144
Opened_files 7630261
Opened_table_definitions 1374752
Opened_tables 1485229
Performance_schema_accounts_lost 0
Performance_schema_cond_classes_lost 0
Performance_schema_cond_instances_lost 0
Performance_schema_digest_lost 0
Performance_schema_file_classes_lost 0
Performance_schema_file_handles_lost 0
Performance_schema_file_instances_lost 0
Performance_schema_hosts_lost 0
Performance_schema_locker_lost 0
Performance_schema_mutex_classes_lost 0
Performance_schema_mutex_instances_lost 0
Performance_schema_rwlock_classes_lost 0
Performance_schema_rwlock_instances_lost 0
Performance_schema_session_connect_attrs_lost 0
Performance_schema_socket_classes_lost 0
Performance_schema_socket_instances_lost 0
Performance_schema_stage_classes_lost 0
Performance_schema_statement_classes_lost 0
Performance_schema_table_handles_lost 0
Performance_schema_table_instances_lost 0
Performance_schema_thread_classes_lost 0
Performance_schema_thread_instances_lost 0
Performance_schema_users_lost 0
Prepared_stmt_count 0
Qcache_free_blocks 49524
Qcache_free_memory 87276208
Qcache_hits 66961637
Qcache_inserts 7362295
Qcache_lowmem_prunes 2095259
Qcache_not_cached 1936330
Qcache_queries_in_cache 132129
Qcache_total_blocks 457045
Queries 83907002
Questions 83779118
Select_full_join 78809
Select_full_range_join 1300
Select_range 1877466
Select_range_check 5732
Select_scan 1592114
Slave_heartbeat_period 0.000
Slave_last_heartbeat
Slave_open_temp_tables 0
Slave_received_heartbeats 0
Slave_retried_transactions 0
Slave_running OFF
Slow_launch_threads 0
Slow_queries 25
Sort_merge_passes 26
Sort_range 2296496
Sort_rows 639285451
Sort_scan 2189528
Ssl_accept_renegotiates 0
Ssl_accepts 0
Ssl_callback_cache_hits 0
Ssl_cipher
Ssl_cipher_list
Ssl_client_connects 0
Ssl_connect_renegotiates 0
Ssl_ctx_verify_depth 0
Ssl_ctx_verify_mode 0
Ssl_default_timeout 0
Ssl_finished_accepts 0
Ssl_finished_connects 0
Ssl_server_not_after
Ssl_server_not_before
Ssl_session_cache_hits 0
Ssl_session_cache_misses 0
Ssl_session_cache_mode Unknown
Ssl_session_cache_overflows 0
Ssl_session_cache_size 0
Ssl_session_cache_timeouts 0
Ssl_sessions_reused 0
Ssl_used_session_cache_entries 0
Ssl_verify_depth 0
Ssl_verify_mode 0
Ssl_version
Table_locks_immediate 13984501
Table_locks_waited 7856
Table_open_cache_hits 14531377
Table_open_cache_misses 1485148
Table_open_cache_overflows 1462056
Tc_log_max_pages_used 0
Tc_log_page_size 0
Tc_log_page_waits 0
Threads_cached 43
Threads_connected 5
Threads_created 48
Threads_running 4
Uptime 203357
Uptime_since_flush_status 203357

top output:

top - 12:52:35 up 2 days, 11:43, 1 user, load average: 0.33, 0.45, 0.48
Tasks: 137 total, 1 running, 81 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.3 us, 0.4 sy, 0.0 ni, 99.1 id, 0.0 wa, 0.0 hi, 0.0 si, 0.3 st
KiB Mem : 12295328 total, 174116 free, 11271140 used, 850072 buff/cache
KiB Swap: 4194300 total, 3024124 free, 1170176 used. 671912 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
16438 mysql 20 0 14.321g 0.010t 7304 S 15.8 90.2 609:23.71 mysqld


free command output:

total used free shared buff/cache available
Mem: 12295328 11271852 189240 1852 834236 671096
Swap: 4194300 1170176 3024124

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Re: Mysql high memory usage on centos 7 (migrating from centos 5)
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March 03, 2018 05:54AM


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