My site is generating error 500s to users when load is high ("cannot allocate memory" errors appear in my logs). I have a VPS with GoDaddy, 8GB RAM (on average only about 40% of RAM is being used at any time, which is really weird given the "out of memory" errors). CPU usage can get pretty high during peak times (> 90%). Main site is using an InnoDB database. Below is the content of my.cnf file (results of MySQLTuner follow). I'm not a professional DBA by any means, and am over paying GoDaddy for their useless tuning services. Any help would be greatly appreciated.
[mysql]
# CLIENT #
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
# GENERAL #
user = mysql
default-storage-engine = InnoDB
socket = /var/lib/mysql/mysql.sock
pid-file = /var/lib/mysql/mysql.pid
# MyISAM #
key-buffer-size = 512M
myisam-recover = FORCE,BACKUP
# SAFETY #
max-allowed-packet = 256M
max-connect-errors = 1000
# DATA STORAGE #
datadir = /var/lib/mysql/
# CACHES AND LIMITS #
tmp-table-size = 256M
max-heap-table-size = 256M
query-cache-type = 1
query-cache-size = 512M
query-cache-limit = 8M
query-cache-min-res-unit = 2048
max-connections = 1000
thread-cache-size = 128M
open-files-limit = 65535
table-definition-cache = 1024
table-open-cache = 2048M
wait-timeout = 300
# INNODB #
innodb-flush-method = O_DIRECT
innodb-log-files-in-group = 2
innodb-log-file-size = 256M
innodb-flush-log-at-trx-commit = 2
innodb-file-per-table = 1
innodb-buffer-pool-size = 6G
innodb-read-io-threads = 16
innodb-write-io-threads = 16
innodb-buffer-pool-instances = 6
join-buffer-size = 256M
sort-buffer-size = 256M
# LOGGING #
log-error = /var/lib/mysql/mysql-error.log
log-queries-not-using-indexes = 1
slow-query-log = 1
slow-query-log-file = /var/lib/mysql/mysql-slow-new.log
long_query_time = 1
innodb_file_per_table=1
open_files_limit=10000
Output of MySQLTuner:
-------- Storage Engine Statistics -------------------------------------------
[[0;34m--[0m] Status: [0;32m+ARCHIVE [0m[0;32m+BLACKHOLE [0m[0;32m+CSV [0m[0;31m-FEDERATED [0m[0;32m+InnoDB [0m[0;32m+MRG_MYISAM [0m
[[0;34m--[0m] Data in MyISAM tables: 60M (Tables: 485)
[[0;34m--[0m] Data in InnoDB tables: 284M (Tables: 720)
[[0;34m--[0m] Data in MEMORY tables: 0B (Tables: 17)
[[0;31m!![0m] Total fragmented tables: 26
-------- Performance Metrics -------------------------------------------------
[[0;34m--[0m] Up for: 1d 2h 35m 10s (4M q [47.935 qps], 58K conn, TX: 7B, RX: 541M)
[[0;34m--[0m] Reads / Writes: 82% / 18%
[[0;34m--[0m] Binary logging is disabled
[[0;34m--[0m] Total buffers: 7.3G global + 512.6M per thread (1000 max threads)
[[0;31m!![0m] Maximum reached memory usage: 156.4G (1955.59% of installed RAM)
[[0;31m!![0m] Maximum possible memory usage: 507.9G (6348.45% of installed RAM)
[[0;32mOK[0m] Slow queries: 2% (111K/4M)
[[0;32mOK[0m] Highest usage of available connections: 29% (298/1000)
[[0;32mOK[0m] Aborted connections: 0.23% (133/58103)
[[0;32mOK[0m] Query cache efficiency: 91.5% (3M cached / 4M selects)
[[0;32mOK[0m] Query cache prunes per day: 0
[[0;32mOK[0m] Sorts requiring temporary tables: 0% (0 temp sorts / 132K sorts)
[[0;31m!![0m] Temporary tables created on disk: 96% (95K on disk / 98K total)
[[0;32mOK[0m] Thread cache hit rate: 99% (298 created / 58K connections)
[[0;32mOK[0m] Table cache hit rate: 99% (2K open / 2K opened)
[[0;32mOK[0m] Open file limit used: 12% (1K/10K)
[[0;32mOK[0m] Table locks acquired immediately: 99% (640K immediate / 640K locks)
-------- MyISAM Metrics -----------------------------------------------------
[[0;31m!![0m] Key buffer used: 18.6% (99M used / 536M cache)
[[0;32mOK[0m] Key buffer size / total MyISAM indexes: 512.0M/12.0M
[[0;32mOK[0m] Read Key buffer hit rate: 98.7% (1M cached / 13K reads)
[[0;31m!![0m] Write Key buffer hit rate: 86.7% (152K cached / 20K writes)
-------- InnoDB Metrics -----------------------------------------------------
[[0;34m--[0m] InnoDB is enabled.
[[0;32mOK[0m] InnoDB buffer pool / data size: 6.0G/284.1M
[[0;32mOK[0m] InnoDB buffer pool instances: 6
[[0;31m!![0m] InnoDB Used buffer: 4.35% (17122 used/ 393213 total)
[[0;32mOK[0m] InnoDB Read buffer efficiency: 100.00% (2425099009 hits/ 2425112323 total)
[[0;31m!![0m] InnoDB Write buffer efficiency: 0.00% (0 hits/ 1 total)
[[0;32mOK[0m] InnoDB log waits: 0.00% (0 waits / 82535 writes)
-------- AriaDB Metrics -----------------------------------------------------
[[0;34m--[0m] AriaDB is disabled.
-------- Replication Metrics -------------------------------------------------
[[0;34m--[0m] No replication slave(s) for this server.
[[0;34m--[0m] This is a standalone server..
-------- Recommendations -----------------------------------------------------
General recommendations:
Run OPTIMIZE TABLE to defragment tables for better performance
Restrict Host for user@% to user@SpecificDNSorIp
Reduce your overall MySQL memory footprint for system stability
Temporary table size is already large – reduce result set size
Reduce your SELECT DISTINCT queries without LIMIT clauses
MySQLDumpSlow Summary:
Count: 135883 Time=0.14s (19134s) Lock=0.00s (129s) Rows=1.0 (135883), 2users@localhost
SELECT COUNT(*) as `listings2` FROM `ppb_listings` WHERE end_time > NOW() AND deleted = N AND start_time < NOW()
Count: 164403 Time=0.03s (4211s) Lock=0.00s (57s) Rows=1.0 (164400), auction_777onlin[auction_777onlin]@localhost
SELECT `value` as `file_path` FROM `ppb_listings_media` WHERE `value` = 'S'
UNION
SELECT `logo_path` as `file_path` FROM `ppb_categories` WHERE `logo_path` = 'S'
UNION
SELECT `content` as `file_path` FROM `ppb_advertising` WHERE `content` = 'S' AND `type` = 'S'
UNION
SELECT `value` as `file_path` FROM `ppb_settings` WHERE `value` = 'S' AND `name` = 'S'
UNION
SELECT `store_settings` as `file_path` FROM `ppb_users` WHERE `store_settings` LIKE 'S'
Count: 5840 Time=0.07s (421s) Lock=0.00s (0s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
UPDATE ppb_listings SET closed = 'S', updated_at = now() WHERE (closed = N) AND (deleted = N) AND (draft = N) AND (start_time < now()) AND (end_time > now() OR end_time is null)
Count: 5840 Time=0.07s (390s) Lock=0.00s (1s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
SELECT listings.* FROM ppb_listings AS listings WHERE (closed = N) AND (deleted = N) AND (draft = N) AND (start_time < now()) AND (end_time < now()) AND (end_time is not null) LIMIT N FOR UPDATE
Count: 5840 Time=0.07s (386s) Lock=0.00s (0s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
UPDATE ppb_listings SET deleted = 'S' WHERE (end_time is not null) AND (deleted = N) AND (closed = N) AND (end_time < (now() - interval N day))
Count: 5527 Time=0.06s (335s) Lock=0.00s (0s) Rows=1.7 (9418), auction_777onlin[auction_777onlin]@localhost
SELECT listings.* FROM ppb_listings AS listings WHERE (counted_at is null OR counted_at < IF(updated_at is null, created_at, updated_at)) LIMIT N
Count: 84705 Time=0.00s (55s) Lock=0.00s (9s) Rows=28.0 (2371737), 2users@localhost
SELECT categories.* FROM ppb_categories AS categories WHERE (enable_auctions = N) AND (user_id is null) AND (parent_id is null) ORDER BY order_id ASC, name ASC
Count: 579217 Time=0.00s (45s) Lock=0.00s (25s) Rows=1.0 (579217), auction_777onlin[auction_777onlin]@localhost
SELECT bid_increments.amount FROM ppb_bid_increments AS bid_increments WHERE (tier_from <= 'S') AND (tier_to > 'S')
Count: 36456 Time=0.00s (37s) Lock=0.00s (27s) Rows=1.0 (36456), 2users@localhost
SELECT COUNT(*) as `users` FROM `ppb_users`
Count: 115005 Time=0.00s (31s) Lock=0.00s (13s) Rows=0.9 (108415), 2users@localhost
SELECT users_statistics.* FROM ppb_users_statistics AS users_statistics WHERE (remote_addr = 'S') AND (http_user_agent = 'S')
Count: 36208 Time=0.00s (29s) Lock=0.00s (4s) Rows=28.0 (1013818), 2users@localhost
SELECT categories.* FROM ppb_categories AS categories WHERE (parent_id IS NULL) AND (enable_auctions = N) AND (user_id IS NULL) ORDER BY order_id ASC, name ASC
Count: 49482 Time=0.00s (26s) Lock=0.00s (12s) Rows=156.0 (7719312), 4users@localhost
SELECT settings.name, settings.value FROM ppb_settings AS settings
Count: 165 Time=0.13s (20s) Lock=0.00s (0s) Rows=10.4 (1711), auction_777onlin[auction_777onlin]@localhost
SELECT listings_watch.*, w.*, l.end_time FROM ppb_listings_watch AS listings_watch
INNER JOIN ppb_listings_watch AS w
INNER JOIN ppb_listings AS l ON w.listing_id = l.id WHERE (w.user_id = 'S') AND (l.end_time >= NOW()) GROUP BY w.id ORDER BY l.end_time ASC LIMIT N
Count: 197 Time=0.08s (16s) Lock=0.00s (0s) Rows=17.6 (3477), auction_777onlin[auction_777onlin]@localhost
SELECT COUNT(*) AS nb_rows FROM ppb_listings_watch AS listings_watch
INNER JOIN ppb_listings_watch AS w
INNER JOIN ppb_listings AS l ON w.listing_id = l.id WHERE (w.user_id = 'S') AND (l.end_time >= NOW()) GROUP BY w.id
Count: 5840 Time=0.00s (13s) Lock=0.00s (1s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
SELECT users.* FROM ppb_users AS users WHERE (user_verified = N) AND (user_verified_next_payment < (now() + interval N day)) AND (user_verified_next_payment > N) AND (user_verified_email = N) LIMIT N
Count: 5840 Time=0.00s (12s) Lock=0.00s (0s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
SELECT users.* FROM ppb_users AS users WHERE (store_active = N) AND (store_next_payment < (now() + interval N day)) AND (store_next_payment > N) AND (store_expiration_email = N) LIMIT N
Count: 5840 Time=0.00s (12s) Lock=0.00s (0s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
SELECT users.* FROM ppb_users AS users WHERE (user_verified = N) AND (user_verified_next_payment < now()) AND (user_verified_next_payment > N) LIMIT N
Count: 5840 Time=0.00s (12s) Lock=0.00s (0s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
SELECT users.* FROM ppb_users AS users WHERE (store_active = N) AND (store_next_payment < now()) AND (store_next_payment > N) LIMIT N
Count: 42 Time=0.27s (11s) Lock=0.00s (0s) Rows=6685.6 (280794), root[root]@localhost
SELECT /*!N SQL_NO_CACHE */ * FROM `ppb_listings`
Count: 45033 Time=0.00s (10s) Lock=0.00s (6s) Rows=0.0 (0), 2users@localhost
SELECT custom_fields.* FROM ppb_custom_fields AS custom_fields WHERE (type = 'S') AND (active = N) AND (searchable = N) AND (category_ids REGEXP 'S' OR category_ids = 'S') ORDER BY active DESC, order_id ASC
Count: 5840 Time=0.00s (10s) Lock=0.00s (0s) Rows=0.0 (0), auction_777onlin[auction_777onlin]@localhost
DELETE FROM ppb_autocomplete_tags WHERE (created_at < now() - interval N month) AND (updated_at < now() - interval N month)
Count: 32 Time=0.27s (8s) Lock=0.00s (0s) Rows=12.0 (383), auction_777onlin[auction_777onlin]@localhost
SELECT listings_watch.*, w.*, l.end_time FROM ppb_listings_watch AS listings_watch
INNER JOIN ppb_listings_watch AS w
INNER JOIN ppb_listings AS l ON w.listing_id = l.id WHERE (w.user_id = 'S') AND (l.end_time >= NOW()) GROUP BY w.id ORDER BY l.end_time ASC LIMIT N OFFSET N
Show Variables:
Variable_name Variable_name
auto_increment_increment 1
auto_increment_offset 1
autocommit ON
automatic_sp_privileges ON
avoid_temporal_upgrade OFF
back_log 250
basedir /usr
big_tables OFF
bind_address *
binlog_cache_size 32768
binlog_checksum CRC32
binlog_direct_non_transactional_updates OFF
binlog_error_action IGNORE_ERROR
binlog_format STATEMENT
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 10
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 OFF
expire_logs_days 0
explicit_defaults_for_timestamp OFF
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
general_log_file /var/lib/mysql/www.log
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 DISABLED
have_profiling YES
have_query_cache YES
have_rtree_keys YES
have_ssl DISABLED
have_symlink YES
host_cache_size 653
hostname www.777auction.ca
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
Variable_name Value
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 OFF
innodb_buffer_pool_dump_now OFF
innodb_buffer_pool_filename ib_buffer_pool
innodb_buffer_pool_instances 1
innodb_buffer_pool_load_abort OFF
innodb_buffer_pool_load_at_startup OFF
innodb_buffer_pool_load_now OFF
innodb_buffer_pool_size 1073741824
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 ibdata1:12M: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 2
innodb_flush_method O_DIRECT
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_old_blocks_pct 37
innodb_old_blocks_time 1000
innodb_online_alter_log_max_size 134217728
innodb_open_files 1000
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 16
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_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
Variable_name Value
innodb_sync_spin_loops 30
innodb_table_locks ON
innodb_thread_concurrency 0
innodb_thread_sleep_delay 10000
innodb_undo_directory .
innodb_undo_logs 128
innodb_undo_tablespaces 0
innodb_use_native_aio ON
innodb_use_sys_malloc ON
innodb_version 5.6.28
innodb_write_io_threads 16
insert_id 0
interactive_timeout 28800
join_buffer_size 268435456
keep_files_on_create OFF
key_buffer_size 104857600
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 OFF
log_bin_basename
log_bin_index
log_bin_trust_function_creators OFF
log_bin_use_v1_row_events OFF
log_error /var/lib/mysql/mysql-error.log
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 1
long_query_time 1
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 268435456
max_binlog_cache_size 1.84467E+19
max_binlog_size 1073741824
max_binlog_stmt_cache_size 1.84467E+19
max_connect_errors 1000
max_connections 1000
max_delayed_threads 20
max_digest_length 1024
max_error_count 64
max_heap_table_size 67108864
max_insert_delayed_threads 20
max_join_size 1.84467E+19
max_length_for_sort_data 1024
max_prepared_stmt_count 16382
max_relay_log_size 0
max_seeks_for_key 1.84467E+19
max_sort_length 1024
max_sp_recursion_depth 0
max_tmp_tables 32
max_user_connections 0
max_write_lock_count 1.84467E+19
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 9.22337E+18
myisam_mmap_size 1.84467E+19
myisam_recover_options BACKUP,FORCE
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 10000
optimizer_prune_level 1
optimizer_search_depth 62
optimizer_switch index_merge=on,index_merge_union=on,index_merge_so...
optimizer_trace enabled=off,one_line=off
optimizer_trace_features greedy_search=on,range_optimizer=on,dynamic_range=...
optimizer_trace_limit 1
optimizer_trace_max_mem_size 16384
optimizer_trace_offset -1
performance_schema ON
Variable_name Value
performance_schema_accounts_size 100
performance_schema_digests_size 10000
performance_schema_events_stages_history_long_size 10000
performance_schema_events_stages_history_size 10
performance_schema_events_statements_history_long_... 10000
performance_schema_events_statements_history_size 10
performance_schema_events_waits_history_long_size 10000
performance_schema_events_waits_history_size 10
performance_schema_hosts_size 100
performance_schema_max_cond_classes 80
performance_schema_max_cond_instances 6148
performance_schema_max_digest_length 1024
performance_schema_max_file_classes 50
performance_schema_max_file_handles 32768
performance_schema_max_file_instances 15385
performance_schema_max_mutex_classes 200
performance_schema_max_mutex_instances 17240
performance_schema_max_rwlock_classes 40
performance_schema_max_rwlock_instances 8544
performance_schema_max_socket_classes 10
performance_schema_max_socket_instances 2020
performance_schema_max_stage_classes 150
performance_schema_max_statement_classes 168
performance_schema_max_table_handles 2000
performance_schema_max_table_instances 12500
performance_schema_max_thread_classes 50
performance_schema_max_thread_instances 2100
performance_schema_session_connect_attrs_size 512
performance_schema_setup_actors_size 100
performance_schema_setup_objects_size 100
performance_schema_users_size 100
pid_file /var/lib/mysql/mysql.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 7635
query_alloc_block_size 8192
query_cache_limit 8388608
query_cache_min_res_unit 2048
query_cache_size 52428800
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 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_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
server_id 0
server_id_bits 32
server_uuid ea294e1a-2583-11e4-bcd2-00185136fbef
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/mysql-slow-new.log
socket /var/lib/mysql/mysql.sock
sort_buffer_size 268435456
sql_auto_is_null OFF
sql_big_selects ON
Variable_name Value
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 1.84467E+19
sql_slave_skip_counter 0
sql_warnings OFF
ssl_ca
ssl_capath
ssl_cert
ssl_cipher
ssl_crl
ssl_crlpath
ssl_key
storage_engine InnoDB
stored_program_cache 256
sync_binlog 0
sync_frm ON
sync_master_info 10000
sync_relay_log 10000
sync_relay_log_info 10000
system_time_zone EST
table_definition_cache 1024
table_open_cache 1000
table_open_cache_instances 1
thread_cache_size 16384
thread_concurrency 10
thread_handling one-thread-per-connection
thread_stack 262144
time_format %H:%i:%s
time_zone SYSTEM
timed_mutexes OFF
timestamp 1454301257
tmp_table_size 67108864
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 5.6.28-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:
Reached character limit, had to store it externally:
http://777auction.ca/globstat.txt
Explain Selects:
SHOW CREATE TABLE:
Best Answer
Memory issues
Too large -- tends to take a lot of effort purging entries; drop it to 50M. Or consider setting it to 0.
NO! That is a count, not bytes.
1000
(noM
) is probably fine.Drop that to 1G to make sure the "out of memory" goes away. And you don't need such a big buffer_pool. However, you should consider converting all non-system tables to InnoDB. (In decreasing the buffer_pool_size, decrease the instances - to 1.)
clutters the slowlog without providing as much information as the rest of the slowlog. Change to
0
.Since you don't have much in MyISAM tables, lower this to 100M.
These are bogus; ignore them.
That's important advice -- tmp tables are created for complex selects. Lots of users could create lots of big tmp tables, which could blow out memory. Suggest 64M would be safer.
That says you have 720 small
.ibd
files. It's not worth changing at this point, but I would recommend turning off file_per_table when creating table that won't get bigger than a megabyte.CPU advice
This is one strong clue that the queries and/or indexes are not well written.
Good. You have the info with which to find the naughty queries. Use
pt-query-digest
to summarize the slowlog. Then present to us a couple of the worst, together withEXPLAIN SELECT...
andSHOW CREATE TABLE
. We can probably quickly help you get the CPU/load down to a reasonable level.More advice
I you would like more thorough tuning advice, provide
SHOW VARIABLES;
andSHOW GLOBAL STATUS;
. I'll run them through another script that will probably find a few more things.