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Message #01641
Re: Internal tmp tables
Attached is a dump of show variables.
Steve
On Monday, June 2, 2014 2:56:48 PM UTC+10, Roberto Spadim wrote:
>
> Maybe a show variables could help via pastebin or something like it
>
> Em segunda-feira, 2 de junho de 2014, Steve Kelly <
> s.k...@xxxxxxxxxxxxxxxxxxxxxxxxxx <javascript:>> escreveu:
>
>> Hi Colin
>>
>> Thanks for the reply. The older version of mysql was: Ver 14.14 Distrib
>> 5.1.72
>>
>> The only difference the join_cache_level seemed to make was when I looked
>> at the Explain, it no longer stated it was using the join buffer. As far as
>> execution time, it was identical.
>>
>> I don't really have any Aria settings in my.cnf, it is mainly Innodb that
>> has been tweaked.
>>
>> # MariaDB database server configuration file.
>> #
>> [client]
>> port = 3306
>> socket = /var/run/mysqld/mysqld.sock
>>
>> [mysqld_safe]
>> socket = /var/run/mysqld/mysqld.sock
>> nice = 0
>>
>> [mysqld]
>> pid-file = /var/run/mysqld/mysqld.pid
>> socket = /var/run/mysqld/mysqld.sock
>> port = 3306
>> basedir = /usr
>> datadir = /var/lib/mysql
>> tmpdir = /tmp
>> lc_messages_dir = /usr/share/mysql
>> lc_messages = en_US
>> skip-external-locking
>> bind-address = 127.0.0.1
>>
>> max_connections = 200
>> connect_timeout = 10
>> wait_timeout = 180
>> max_allowed_packet = 16M
>> thread_cache_size = 256
>> sort_buffer_size = 256M
>> bulk_insert_buffer_size = 16M
>> tmp_table_size = 256M
>> max_heap_table_size = 256M
>> join_buffer_size = 8M
>> sort_buffer_size = 8M
>>
>> myisam_recover = BACKUP
>> key_buffer_size = 128M
>> open-files-limit = 2000
>> table_open_cache = 4096
>> myisam_sort_buffer_size = 512M
>> concurrent_insert = 2
>> read_buffer_size = 2M
>> read_rnd_buffer_size = 1M
>> query_cache_limit = 4M
>> query_cache_size = 128M
>>
>> log_error = /var/log/mysql/error.log
>> slow_query_log_file = /var/log/mysql/mariadb-slow.
>> log
>> long_query_time = 2
>> log_slow_verbosity = query_plan
>> expire_logs_days = 10
>> max_binlog_size = 100M
>>
>> default_storage_engine = InnoDB
>> innodb_buffer_pool_size = 9216M
>> innodb_log_buffer_size = 8M
>> innodb_file_per_table = 1
>> innodb_open_files = 400
>> innodb_io_capacity = 400
>> innodb_flush_method = O_DIRECT
>> innodb_thread_concurrency = 16
>> aria_pagecache_buffer_size = 512M
>> join_cache_level = 0
>>
>> [mysqldump]
>> quick
>> quote-names
>> max_allowed_packet = 16M
>>
>> [mysql]
>>
>> [isamchk]
>> key_buffer = 128M
>>
>>
>> !includedir /etc/mysql/conf.d/
>>
>> ------------------------------
>> *From: *"Colin Charles" <colin@xxxxxxxxxxx>
>> *To: *"s kelly" <s.kelly@xxxxxxxxxxxxxxxxxxxxxxxxxx>, "Maria Discuss" <
>> maria-discuss@xxxxxxxxxxxxxxxxxxx>, "Sergey Petrunia" <sergey@xxxxxxxxxxx
>> >
>> *Cc: *mariadbmanager@xxxxxxxxxxxxxxxx
>> *Sent: *Monday, 2 June, 2014 1:14:56 PM
>> *Subject: *Re: Internal tmp tables
>>
>> Hi!
>>
>> On 1 Jun 2014, at 17:37, s.kelly@xxxxxxxxxxxxxxxxxxxxxxxxxx wrote:
>>
>> > I have recently moved from an older version of Mysql to MariaDB, I have
>> a few queries which use internal tmp tables (according to EXPLAIN) and the
>> performance is almost un-usable on MariaDB for some reason.
>> > Is there anything different in MariaDB that would be causing this
>> issue. The version I am using is: Ver 15.1 Distrib 10.0.10-MariaDB.
>> >
>>
>> What are your aria engine settings in my.cnf out of curiosity?
>>
>> Try setting join_cache_level = 0
>>
>> Please also provide @@optimizer_switch output
>>
>> Thanks
>>
>> P/S: what was the older version of mysql that you're referring to?
>>
>>
>> > Here is the explain from the query:
>> >
>> +------+-------------+-------+-------+---------------+----------+---------+------+------+-------------------------------------------------------------------------------+
>> > | id | select_type | table | type | possible_keys | key |
>> key_len | ref | rows | Extra
>> |
>> >
>> +------+-------------+-------+-------+---------------+----------+---------+------+------+-------------------------------------------------------------------------------+
>> > | 1 | SIMPLE | plots | range | plot_IDX | plot_IDX | 4
>> | NULL | 2939 | Using index condition; Using temporary; Using filesort
>> |
>> > | 1 | SIMPLE | plots | range | plot_IDX | plot_IDX | 4
>> | NULL | 2939 | Using index condition; Using where; Using join buffer
>> (flat, BNL join) |
>> > | 1 | SIMPLE | plots | range | plot_IDX | plot_IDX | 4
>> | NULL | 2939 | Using index condition; Using where; Using join buffer
>> (incremental, BNL join) |
>> > | 1 | SIMPLE | plots | range | plot_IDX | plot_IDX | 4
>> | NULL | 2939 | Using index condition; Using where; Using join buffer
>> (incremental, BNL join) |
>> > | 1 | SIMPLE | plots | range | plot_IDX | plot_IDX | 4
>> | NULL | 2939 | Using index condition; Using where; Using join buffer
>> (incremental, BNL join) |
>> > | 1 | SIMPLE | plots | range | plot_IDX | plot_IDX | 4
>> | NULL | 2939 | Using index condition; Using where; Using join buffer
>> (incremental, BNL join) |
>> >
>> +------+-------------+-------+-------+---------------+----------+---------+------+------+-------------------------------------------------------------------------------+
>> >
>> > To give you an idea, the exact same query on the old version of mysql
>> took about 1 second, this version of MariaDB is taking 1min 48secs on the
>> same hardware.
>> > Any help would be appreciated.
>> >
>> > Thanks Steve.
>> >
>> > --
>> > You received this message because you are subscribed to the Google
>> Groups "MariaDB-Manager" group.
>> > To unsubscribe from this group and stop receiving emails from it, send
>> an email to mariadbmanager+unsubscribe@xxxxxxxxxxxxxxxx.
>> > For more options, visit https://groups.google.com/d/optout.
>>
>> --
>> Colin Charles, Chief Evangelist, SkySQL - The MariaDB Company
>> blog: http://bytebot.net/blog/| t: +6-012-204-3201 | Skype: colincharles
>>
>>
>>
>
> --
> Roberto Spadim
> SPAEmpresarial
> Eng. Automação e Controle
>
>
Variable_name Value
aria_block_size 8192
aria_checkpoint_interval 30
aria_checkpoint_log_activity 1048576
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 ON
aria_pagecache_age_threshold 300
aria_pagecache_buffer_size 536870912
aria_pagecache_division_limit 100
aria_recover NORMAL
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 150
basedir /usr
big_tables OFF
binlog_annotate_row_events OFF
binlog_cache_size 32768
binlog_checksum NONE
binlog_commit_wait_count 0
binlog_commit_wait_usec 100000
binlog_direct_non_transactional_updates OFF
binlog_format STATEMENT
binlog_optimize_thread_scheduling ON
binlog_stmt_cache_size 32768
bulk_insert_buffer_size 16777216
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 ALWAYS
connect_timeout 10
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_master_connection
default_storage_engine InnoDB
default_week_format 0
delay_key_write ON
delayed_insert_limit 100
delayed_insert_timeout 300
delayed_queue_size 1000
div_precision_increment 4
error_count 0
event_scheduler OFF
expensive_subquery_limit 100
expire_logs_days 10
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
general_log_file VDC-SYD01-EMS.log
group_concat_max_len 1024
gtid_binlog_pos
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gtid_current_pos
gtid_domain_id 0
gtid_ignore_duplicates OFF
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_openssl YES
have_profiling YES
have_query_cache YES
have_rtree_keys YES
have_ssl DISABLED
have_symlink YES
histogram_size 0
histogram_type SINGLE_PREC_HB
host_cache_size 128
hostname VDC-SYD01-EMS
identity 0
ignore_builtin_innodb OFF
ignore_db_dirs
in_transaction 0
init_connect
init_file
init_slave
innodb_adaptive_flushing ON
innodb_adaptive_flushing_lwm 10
innodb_adaptive_hash_index ON
innodb_adaptive_hash_index_partitions 1
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 OFF
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 OFF
innodb_buffer_pool_load_now OFF
innodb_buffer_pool_populate OFF
innodb_buffer_pool_size 9663676416
innodb_change_buffer_max_size 25
innodb_change_buffering all
innodb_checksum_algorithm innodb
innodb_checksums ON
innodb_cleaner_lsn_age_factor high_checkpoint
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_corrupt_table_action assert
innodb_data_file_path ibdata1:12M:autoextend
innodb_data_home_dir
innodb_disable_sort_file_cache OFF
innodb_doublewrite ON
innodb_empty_free_list_algorithm backoff
innodb_fake_changes OFF
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 O_DIRECT
innodb_flush_neighbors 1
innodb_flushing_avg_loops 30
innodb_force_load_corrupted OFF
innodb_force_recovery 0
innodb_foreground_preflush exponential_backoff
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 400
innodb_io_capacity_max 2000
innodb_kill_idle_transaction 0
innodb_large_prefix OFF
innodb_lock_wait_timeout 50
innodb_locking_fake_changes ON
innodb_locks_unsafe_for_binlog OFF
innodb_log_arch_dir ./
innodb_log_arch_expire_sec 0
innodb_log_archive OFF
innodb_log_block_size 512
innodb_log_buffer_size 8388608
innodb_log_checksum_algorithm innodb
innodb_log_compressed_pages ON
innodb_log_file_size 50331648
innodb_log_files_in_group 2
innodb_log_group_home_dir ./
innodb_lru_scan_depth 1024
innodb_max_bitmap_file_size 104857600
innodb_max_changed_pages 1000000
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 400
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_sched_priority_cleaner 19
innodb_show_locks_held 10
innodb_show_verbose_locks 0
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_strict_mode OFF
innodb_support_xa ON
innodb_sync_array_size 1
innodb_sync_spin_loops 30
innodb_table_locks ON
innodb_thread_concurrency 16
innodb_thread_sleep_delay 0
innodb_track_changed_pages OFF
innodb_undo_directory .
innodb_undo_logs 128
innodb_undo_tablespaces 0
innodb_use_atomic_writes OFF
innodb_use_fallocate OFF
innodb_use_global_flush_log_at_trx_commit ON
innodb_use_native_aio ON
innodb_use_stacktrace OFF
innodb_use_sys_malloc ON
innodb_version 5.6.15-63.0
innodb_write_io_threads 4
insert_id 0
interactive_timeout 28800
join_buffer_size 8388608
join_buffer_space_limit 2097152
join_cache_level 0
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_segments 0
large_files_support ON
large_page_size 0
large_pages OFF
last_gtid
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_trust_function_creators OFF
log_error /var/log/mysql/error.log
log_output FILE
log_queries_not_using_indexes OFF
log_slave_updates OFF
log_slow_filter admin,filesort,filesort_on_disk,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
log_slow_rate_limit 1
log_slow_verbosity query_plan
log_warnings 1
long_query_time 2.000000
low_priority_updates OFF
lower_case_file_system OFF
lower_case_table_names 0
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max_allowed_packet 16777216
max_binlog_cache_size 18446744073709547520
max_binlog_size 104857600
max_binlog_stmt_cache_size 18446744073709547520
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max_join_size 18446744073709551615
max_length_for_sort_data 1024
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max_relay_log_size 104857600
max_seeks_for_key 4294967295
max_sort_length 1024
max_sp_recursion_depth 0
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metadata_locks_hash_instances 8
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myisam_block_size 1024
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old OFF
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old_mode
old_passwords OFF
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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=off,table_elimination=on,extended_keys=on,exists_to_in=off
optimizer_use_condition_selectivity 1
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performance_schema_accounts_size 100
performance_schema_digests_size 5000
performance_schema_events_stages_history_long_size 1000
performance_schema_events_stages_history_size 10
performance_schema_events_statements_history_long_size 1000
performance_schema_events_statements_history_size 10
performance_schema_events_waits_history_long_size 1000
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performance_schema_max_mutex_instances 4429
performance_schema_max_rwlock_classes 40
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performance_schema_max_socket_classes 10
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pid_file /var/run/mysqld/mysqld.pid
plugin_dir /usr/lib/mysql/plugin/
plugin_maturity unknown
port 3306
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proxy_user
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socket /var/run/mysqld/mysqld.sock
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ssl_cert
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thread_cache_size 200
thread_concurrency 10
thread_handling one-thread-per-connection
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thread_pool_oversubscribe 3
thread_pool_size 8
thread_pool_stall_limit 500
thread_stack 294912
time_format %H:%i:%s
time_zone SYSTEM
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timestamp 1401686417.116237
tmp_table_size 268435456
tmpdir /tmp
transaction_alloc_block_size 8192
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version 10.0.10-MariaDB-1~lucid
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version_compile_os debian-linux-gnu
version_malloc_library system
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