Re: CPU usage extremely high

[Temu Kinn]

Thanks for your reply. The server has 6 GB RAM. Below is the result of SHOW VARIABLES before doing the suggested changes.

SHOW VARIABLES:
======================
auto_increment_increment = 1
auto_increment_offset = 1
autocommit = ON
automatic_sp_privileges = ON
back_log = 50
basedir = /usr/
big_tables = OFF
binlog_cache_size = 32768
binlog_direct_non_transactional_updates = OFF
binlog_format = STATEMENT
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 = utf8
character_set_system = utf8
character_sets_dir = /usr/share/mysql/charsets/
collation_connection = utf8_general_ci
collation_database = latin1_swedish_ci
collation_server = utf8_general_ci
completion_type = 0
concurrent_insert = 1
connect_timeout = 10
datadir = /var/lib/mysql/
date_format = %Y-%m-%d
datetime_format = "%Y-%m-%d %H:%i:%s"
default_week_format = 0
delay_key_write = ON
delayed_insert_limit = 100
delayed_insert_timeout = 300
delayed_queue_size = 1000
div_precision_increment = 4
engine_condition_pushdown = ON
error_count = 0
event_scheduler = OFF
expire_logs_days = 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 = ON
general_log_file = /var/log/mysql/mysql.log
group_concat_max_len = 1024
have_community_features = YES
have_compress = YES
have_crypt = YES
have_csv = YES
have_dynamic_loading = YES
have_geometry = YES
have_innodb = YES
have_ndbcluster = NO
have_openssl = DISABLED
have_partitioning = YES
have_query_cache = YES
have_rtree_keys = YES
have_ssl = DISABLED
have_symlink = DISABLED
hostname = testpbx.bcfc.bh
identity = 0
ignore_builtin_innodb = OFF
init_connect = "SET NAMES utf8"
init_file =
init_slave =
innodb_adaptive_hash_index = ON
innodb_additional_mem_pool_size = 1048576
innodb_autoextend_increment = 8
innodb_autoinc_lock_mode = 1
innodb_buffer_pool_size = 8388608
innodb_checksums = ON
innodb_commit_concurrency = 0
innodb_concurrency_tickets = 500
innodb_data_file_path = ibdata1:10M:autoextend
innodb_data_home_dir =
innodb_doublewrite = ON
innodb_fast_shutdown = 1
innodb_file_io_threads = 4
innodb_file_per_table = OFF
innodb_flush_log_at_trx_commit = 1
innodb_flush_method =
innodb_force_recovery = 0
innodb_lock_wait_timeout = 50
innodb_locks_unsafe_for_binlog = OFF
innodb_log_buffer_size = 1048576
innodb_log_file_size = 5242880
innodb_log_files_in_group = 2
innodb_log_group_home_dir = ./
innodb_max_dirty_pages_pct = 90
innodb_max_purge_lag = 0
innodb_mirrored_log_groups = 1
innodb_open_files = 300
innodb_rollback_on_timeout = OFF
innodb_stats_method = nulls_equal
innodb_stats_on_metadata = ON
innodb_support_xa = ON
innodb_sync_spin_loops = 20
innodb_table_locks = ON
innodb_thread_concurrency = 8
innodb_thread_sleep_delay = 10000
innodb_use_legacy_cardinality_algorithm = ON
insert_id = 0
interactive_timeout = 28800
join_buffer_size = 131072
keep_files_on_create = OFF
key_buffer_size = 8384512
key_cache_age_threshold = 300
key_cache_block_size = 1024
key_cache_division_limit = 100
language = /usr/share/mysql/english/
large_files_support = ON
large_page_size = 0
large_pages = OFF
last_insert_id = 0
lc_time_names = en_US
license = GPL
local_infile = ON
locked_in_memory = OFF
log = ON
log_bin = OFF
log_bin_trust_function_creators = OFF
log_bin_trust_routine_creators = OFF
log_error = /var/log/mysqld.log
log_output = FILE
log_queries_not_using_indexes = OFF
log_slave_updates = OFF
log_slow_queries = OFF
log_warnings = 1
long_query_time = 10.000000
low_priority_updates = OFF
lower_case_file_system = OFF
lower_case_table_names = 0
max_allowed_packet = 1048576
max_binlog_cache_size = 18446744073709547520
max_binlog_size = 1073741824
max_connect_errors = 10
max_connections = 151
max_delayed_threads = 20
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_long_data_size = 1048576
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 = 0
max_write_lock_count = 18446744073709551615
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 = OFF
open_files_limit = 1024
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"
pid_file = /var/run/mysqld/mysqld.pid
plugin_dir = /usr/lib64/mysql/plugin
port = 3306
preload_buffer_size = 32768
profiling = OFF
profiling_history_size = 15
protocol_version = 10
pseudo_thread_id = 1386
query_alloc_block_size = 8192
query_cache_limit = 1048576
query_cache_min_res_unit = 4096
query_cache_size = 0
query_cache_type = ON
query_cache_wlock_invalidate = OFF
query_prealloc_size = 8192
rand_seed1 =
rand_seed2 =
range_alloc_block_size = 4096
read_buffer_size = 131072
read_only = OFF
read_rnd_buffer_size = 262144
relay_log =
relay_log_index =
relay_log_info_file = relay-log.info
relay_log_purge = ON
relay_log_space_limit = 0
report_host =
report_password =
report_port = 3306
report_user =
rpl_recovery_rank = 0
secure_auth = OFF
secure_file_priv =
server_id = 0
skip_external_locking = ON
skip_name_resolve = OFF
skip_networking = OFF
skip_show_database = OFF
slave_compressed_protocol = OFF
slave_exec_mode = STRICT
slave_load_tmpdir = /tmp
slave_max_allowed_packet = 1073741824
slave_net_timeout = 3600
slave_skip_errors = OFF
slave_transaction_retries = 10
slow_launch_time = 2
slow_query_log = OFF
slow_query_log_file = /var/run/mysqld/mysqld-slow.log
socket = /var/lib/mysql/mysql.sock
sort_buffer_size = 2097144
sql_auto_is_null = ON
sql_big_selects = ON
sql_big_tables = OFF
sql_buffer_result = OFF
sql_log_bin = ON
sql_log_off = OFF
sql_log_update = ON
sql_low_priority_updates = OFF
sql_max_join_size = 18446744073709551615
sql_mode =
sql_notes = ON
sql_quote_show_create = ON
sql_safe_updates = OFF
sql_select_limit = 18446744073709551615
sql_slave_skip_counter =
sql_warnings = OFF
ssl_ca =
ssl_capath =
ssl_cert =
ssl_cipher =
ssl_key =
storage_engine = MyISAM
sync_binlog = 0
sync_frm = ON
system_time_zone = AST
table_definition_cache = 256
table_lock_wait_timeout = 50
table_open_cache = 64
table_type = MyISAM
thread_cache_size = 0
thread_handling = one-thread-per-connection
thread_stack = 262144
time_format = %H:%i:%s
time_zone = SYSTEM
timed_mutexes = OFF
timestamp = 1430233217
tmp_table_size = 16777216
tmpdir = /tmp
transaction_alloc_block_size = 8192
transaction_prealloc_size = 4096
tx_isolation = REPEATABLE-READ
unique_checks = ON
updatable_views_with_limit = YES
version = 5.1.73-log
version_comment = "Source distribution"
version_compile_machine = x86_64
version_compile_os = redhat-linux-gnu
wait_timeout = 28800
warning_count = 0