1

I have problems with my Drupal 10/MariaDB 10.5/PHP 8.1 website when they are 20 users simultaniously.

The website goes down and the response time is really big (up to 30seconds sometimes) because php-fpm process falls (see locust tests).

enter image description here

I've modified nginx config, i see improuvment but still, I can't go more than 30 users without the website becoming KO.

Do you have any advice ? MariaDB is the only thing that's common between several of my project that are quite slow when a few users are using the website...

alter_algorithm DEFAULT
analyze_sample_percentage   100.000000
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_dir_path   /var/lib/mysql/
aria_log_file_size  1073741824
aria_log_purge_type immediate
aria_max_sort_file_size 9223372036853727232
aria_page_checksum  ON
aria_pagecache_age_threshold    300
aria_pagecache_buffer_size  134217728
aria_pagecache_division_limit   100
aria_pagecache_file_hash_size   512
aria_recover_options    BACKUP,QUICK
aria_repair_threads 1
aria_sort_buffer_size   268434432
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    2000
basedir /usr
big_tables  OFF
bind_address    0.0.0.0
binlog_annotate_row_events  ON
binlog_cache_size   32768
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   MIXED
binlog_optimize_thread_scheduling   ON
binlog_row_image    FULL
binlog_row_metadata NO_LOG
binlog_stmt_cache_size  32768
bulk_insert_buffer_size 8388608
character_set_client    utf8mb4
character_set_connection    utf8mb4
character_set_database  utf8mb4
character_set_filesystem    binary
character_set_results   utf8mb4
character_set_server    utf8mb4
character_set_system    utf8
character_sets_dir  /usr/share/mysql/charsets/
check_constraint_checks ON
collation_connection    utf8mb4_general_ci
collation_database  utf8mb4_general_ci
collation_server    utf8mb4_general_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   AUTO
connect_timeout 10
core_file   OFF
datadir /var/lib/mysql/
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_password_lifetime   0
default_regex_flags 
default_storage_engine  InnoDB
default_tmp_storage_engine  
default_week_format 0
delay_key_write ON
delayed_insert_limit    100
delayed_insert_timeout  300
delayed_queue_size  1000
disconnect_on_expired_password  OFF
div_precision_increment 4
encrypt_binlog  OFF
encrypt_tmp_disk_tables OFF
encrypt_tmp_files   OFF
enforce_storage_engine  
eq_range_index_dive_limit   200
event_scheduler OFF
expensive_subquery_limit    100
expire_logs_days    10
explicit_defaults_for_timestamp OFF
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
general_log_file    /var/log/mysql/mysql.log
group_concat_max_len    1048576
gtid_binlog_pos 
gtid_binlog_state   
gtid_cleanup_batch_size 64
gtid_current_pos    
gtid_domain_id  0
gtid_ignore_duplicates  OFF
gtid_pos_auto_engines   
gtid_slave_pos  
gtid_strict_mode    OFF
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    DISABLED
have_symlink    YES
histogram_size  254
histogram_type  DOUBLE_PREC_HB
host_cache_size 1103
hostname    vaneau22
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
init_connect    
init_file   
init_slave  
innodb_adaptive_flushing    ON
innodb_adaptive_flushing_lwm    10.000000
innodb_adaptive_hash_index  OFF
innodb_adaptive_hash_index_parts    8
innodb_adaptive_max_sleep_delay 0
innodb_autoextend_increment 64
innodb_autoinc_lock_mode    1
innodb_background_scrub_data_check_interval 0
innodb_background_scrub_data_compressed OFF
innodb_background_scrub_data_interval   0
innodb_background_scrub_data_uncompressed   OFF
innodb_buf_dump_status_frequency    0
innodb_buffer_pool_chunk_size   134217728
innodb_buffer_pool_dump_at_shutdown ON
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 6442450944
innodb_change_buffer_max_size   25
innodb_change_buffering none
innodb_checksum_algorithm   full_crc32
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  0
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   OFF
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  1
innodb_flush_method fsync
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_immediate_scrub_data_uncompressed    OFF
innodb_instant_alter_column_allowed add_drop_reorder
innodb_io_capacity  200
innodb_io_capacity_max  2000
innodb_large_prefix 
innodb_lock_schedule_algorithm  fcfs
innodb_lock_wait_timeout    50
innodb_log_buffer_size  16777216
innodb_log_checksums    ON
innodb_log_compressed_pages ON
innodb_log_file_size    268435456
innodb_log_files_in_group   1
innodb_log_group_home_dir   ./
innodb_log_optimize_ddl OFF
innodb_log_write_ahead_size 8192
innodb_lru_flush_size   32
innodb_lru_scan_depth   1536
innodb_max_dirty_pages_pct  90.000000
innodb_max_dirty_pages_pct_lwm  0.000000
innodb_max_purge_lag    0
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   2000
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    4
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_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_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  ON
innodb_temp_data_file_path  ibtmp1:12M:autoextend
innodb_thread_concurrency   0
innodb_thread_sleep_delay   0
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  10.5.21
innodb_write_io_threads 4
interactive_timeout 28800
join_buffer_size    262144
join_buffer_space_limit 2097152
join_cache_level    2
keep_files_on_create    OFF
key_buffer_size 134217728
key_cache_age_threshold 300
key_cache_block_size    1024
key_cache_division_limit    100
key_cache_file_hash_size    512
key_cache_segments  0
large_files_support ON
large_page_size 0
large_pages OFF
lc_messages en_US
lc_messages_dir /usr/share/mysql
lc_time_names   en_US
license GPL
local_infile    ON
lock_wait_timeout   86400
locked_in_memory    OFF
log_bin OFF
log_bin_basename    
log_bin_compress    OFF
log_bin_compress_min_len    256
log_bin_index   
log_bin_trust_function_creators OFF
log_disabled_statements sp
log_error   /var/log/mysql/mysql_error.log
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_filter admin,filesort,filesort_on_disk,filesort_priority_queue,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
log_slow_rate_limit 1
log_slow_slave_statements   ON
log_slow_verbosity  
log_tc_size 24576
log_warnings    2
long_query_time 10.000000
low_priority_updates    OFF
lower_case_file_system  OFF
lower_case_table_names  0
master_verify_checksum  OFF
max_allowed_packet  16777216
max_binlog_cache_size   18446744073709547520
max_binlog_size 1073741824
max_binlog_stmt_cache_size  18446744073709547520
max_connect_errors  100
max_connections 10000
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_password_errors 4294967295
max_prepared_stmt_count 16382
max_recursive_iterations    4294967295
max_relay_log_size  1073741824
max_rowid_filter_size   131072
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  32
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
myisam_block_size   1024
myisam_data_pointer_size    6
myisam_max_sort_file_size   9223372036853727232
myisam_mmap_size    18446744073709551615
myisam_recover_options  BACKUP,QUICK
myisam_repair_threads   1
myisam_sort_buffer_size 134216704
myisam_stats_method NULLS_UNEQUAL
myisam_use_mmap OFF
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    32768
optimizer_max_sel_arg_weight    32000
optimizer_prune_level   1
optimizer_search_depth  62
optimizer_selectivity_sampling_limit    100
optimizer_switch    index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on,not_null_range_scan=off
optimizer_trace enabled=off
optimizer_trace_max_mem_size    1048576
optimizer_use_condition_selectivity 4
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_transactions_history_long_size    -1
performance_schema_events_transactions_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 90
performance_schema_max_cond_instances   -1
performance_schema_max_digest_length    1024
performance_schema_max_file_classes 80
performance_schema_max_file_handles 32768
performance_schema_max_file_instances   -1
performance_schema_max_index_stat   -1
performance_schema_max_memory_classes   320
performance_schema_max_metadata_locks   -1
performance_schema_max_mutex_classes    210
performance_schema_max_mutex_instances  -1
performance_schema_max_prepared_statements_instances    -1
performance_schema_max_program_instances    -1
performance_schema_max_rwlock_classes   50
performance_schema_max_rwlock_instances -1
performance_schema_max_socket_classes   10
performance_schema_max_socket_instances -1
performance_schema_max_sql_text_length  1024
performance_schema_max_stage_classes    160
performance_schema_max_statement_classes    222
performance_schema_max_statement_stack  10
performance_schema_max_table_handles    -1
performance_schema_max_table_instances  -1
performance_schema_max_table_lock_stat  -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    -1
performance_schema_setup_objects_size   -1
performance_schema_users_size   -1
pid_file    /run/mysqld/mysqld.pid
plugin_dir  /usr/lib/mysql/plugin/
plugin_maturity gamma
port    3306
preload_buffer_size 32768
profiling   OFF
profiling_history_size  15
progress_report_time    5
protocol_version    10
proxy_protocol_networks 
query_alloc_block_size  16384
query_cache_limit   1048576
query_cache_min_res_unit    4096
query_cache_size    1048576
query_cache_strip_comments  OFF
query_cache_type    OFF
query_cache_wlock_invalidate    OFF
query_prealloc_size 24576
range_alloc_block_size  4096
read_binlog_speed_limit 0
read_buffer_size    131072
read_only   OFF
read_rnd_buffer_size    262144
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 
replicate_ignore_table  
replicate_wild_do_table 
replicate_wild_ignore_table 
report_host 
report_password 
report_port 3306
report_user 
require_secure_transport    OFF
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_system_variables  autocommit,character_set_client,character_set_connection,character_set_results,time_zone
session_track_transaction_info  OFF
skip_external_locking   ON
skip_name_resolve   OFF
skip_networking 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 optimistic
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  1158,1159,1160,1161,1205,1213,1429,2013,12701
slave_transaction_retry_interval    0
slave_type_conversions  
slow_launch_time    2
slow_query_log  ON
slow_query_log_file vaneau22-slow.log
socket  /run/mysqld/mysqld.sock
sort_buffer_size    2097152
sql_auto_is_null    OFF
sql_big_selects ON
sql_buffer_result   OFF
sql_if_exists   OFF
sql_log_bin ON
sql_log_off OFF
sql_mode    STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,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  
ssl_capath  
ssl_cert    
ssl_cipher  
ssl_crl 
ssl_crlpath 
ssl_key 
standard_compliant_cte  ON
storage_engine  InnoDB
stored_program_cache    256
strict_password_validation  ON
sync_binlog 0
sync_frm    ON
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  400
table_open_cache    2000
table_open_cache_instances  5
tcp_keepalive_interval  0
tcp_keepalive_probes    0
tcp_keepalive_time  0
tcp_nodelay ON
thread_cache_size   256
thread_handling one-thread-per-connection
thread_pool_dedicated_listener  OFF
thread_pool_exact_stats OFF
thread_pool_idle_timeout    60
thread_pool_max_threads 65536
thread_pool_oversubscribe   3
thread_pool_prio_kickup_timer   1000
thread_pool_priority    auto
thread_pool_size    2
thread_pool_stall_limit 500
thread_stack    299008
time_format %H:%i:%s
time_zone   SYSTEM
tls_version TLSv1.1,TLSv1.2,TLSv1.3
tmp_disk_table_size 18446744073709551615
tmp_memory_table_size   16777216
tmp_table_size  16777216
tmpdir  /tmp
transaction_alloc_block_size    8192
transaction_prealloc_size   4096
tx_isolation    REPEATABLE-READ
tx_read_only    OFF
unique_checks   ON
updatable_views_with_limit  YES
use_stat_tables PREFERABLY_FOR_QUERIES
userstat    OFF
version 10.5.21-MariaDB-0+deb11u1-log
version_comment Debian 11
version_compile_machine x86_64
version_compile_os  debian-linux-gnu
version_malloc_library  system
version_source_revision bed70468ea08c2820647f5e3ac006a9ff88144ac
version_ssl_library OpenSSL 1.1.1w  11 Sep 2023
wait_timeout    28800
wsrep_osu_method    TOI
wsrep_sr_store  table
wsrep_auto_increment_control    ON
wsrep_causal_reads  OFF
wsrep_certification_rules   strict
wsrep_certify_nonpk ON
wsrep_cluster_address   
wsrep_cluster_name  my_wsrep_cluster
wsrep_convert_lock_to_trx   OFF
wsrep_data_home_dir /var/lib/mysql/
wsrep_dbug_option   
wsrep_debug NONE
wsrep_desync    OFF
wsrep_dirty_reads   OFF
wsrep_drupal_282555_workaround  OFF
wsrep_forced_binlog_format  NONE
wsrep_gtid_domain_id    0
wsrep_gtid_mode OFF
wsrep_ignore_apply_errors   7
wsrep_load_data_splitting   OFF
wsrep_log_conflicts OFF
wsrep_max_ws_rows   0
wsrep_max_ws_size   2147483647
wsrep_mysql_replication_bundle  0
wsrep_node_address  
wsrep_node_incoming_address AUTO
wsrep_node_name vaneau22
wsrep_notify_cmd    
wsrep_on    OFF
wsrep_patch_version wsrep_26.22
wsrep_provider  none
wsrep_provider_options  
wsrep_recover   OFF
wsrep_reject_queries    NONE
wsrep_replicate_myisam  OFF
wsrep_restart_slave OFF
wsrep_retry_autocommit  1
wsrep_slave_fk_checks   ON
wsrep_slave_uk_checks   OFF
wsrep_slave_threads 1
wsrep_sst_auth  
wsrep_sst_donor 
wsrep_sst_donor_rejects_queries OFF
wsrep_sst_method    rsync
wsrep_sst_receive_address   AUTO
wsrep_start_position    00000000-0000-0000-0000-000000000000:-1
wsrep_strict_ddl    OFF
wsrep_sync_wait 0
wsrep_trx_fragment_size 0
wsrep_trx_fragment_unit bytes
3
  • Additional DB information request, please. OS, Version? RAM size, # cores, any SSD or NVME devices on MySQL Host server? Post TEXT data on justpaste.it and share the links. From your SSH login root, Text results of: A) SELECT COUNT(*) FROM information_schema.tables; B) SHOW GLOBAL STATUS; after minimum 24 hours UPTIME D) SHOW FULL PROCESSLIST; E) STATUS; not SHOW STATUS, just STATUS; G) SHOW ENGINE INNODB STATUS; for server workload tuning analysis to provide suggestions. Feb 22 at 2:47
  • Post TEXT data on justpaste.it and share the links. Additional very helpful OS information includes - please, htop 1st page, if available, TERMINATE, top -b -n 1 for most active apps, top -b -n 1 -H for details on your mysql threads memory and cpu usage, ulimit -a for list of limits, iostat -xm 5 3 for IOPS by device & core/cpu count, df -h for Used - Free space by device, df -i for inode info by device, free -h for Used - Free Mem: and Swap:, cat /proc/meminfo includes VMallocUused, for server workload tuning analysis to provide suggestions. Feb 22 at 2:47
  • Find the slow queries via the SlowLog Then. let's discuss the worst ones.
    – Rick James
    Feb 22 at 3:35

1 Answer 1

-1

Suggestions to consider for your my.cnf [mysqld] section for some relief until you can post additional information requested.

max_connections=128  # from 10,000 since you can not support 30 at the moment.
read_rnd_buffer_size=16384  # from 256K to reduce handler_read_rnd_next RPS
innodb_lru_scan_depth=100  # from 1536 to reduce 90% of CPU cycles used for function
innodb_change_buffer_max_size=10  # from 25 percent reserved from buffer_pool_size

There are many more opportunities to improve performance with Global Variable adjustments. View my profile.

Not the answer you're looking for? Browse other questions tagged or ask your own question.