我的InnoDb表插入速度非常慢（2 500 000个音符）。但为什么？ 这是调试信息：
服务器：英特尔®酷睿™i7-920 24 GB DDR3 RAMFestplatten2 x 750 GB SATA 3 Gb / s硬盘 168.02查询/秒
CREATE TABLE IF NOT EXISTS `bysr_customers` (
`customerID` int(11) NOT NULL AUTO_INCREMENT,
`OdnoklasID` varchar(255) NOT NULL,
`Login` varchar(32) DEFAULT NULL,
`cust_password` varchar(255) NOT NULL,
`Email` varchar(255) DEFAULT NULL,
`first_name` varchar(255) DEFAULT NULL,
`last_name` varchar(255) DEFAULT NULL,
`kopilka` int(110) NOT NULL DEFAULT '0',
`subscribed4news` int(11) DEFAULT NULL,
`custgroupID` int(11) DEFAULT NULL,
`addressID` int(11) DEFAULT NULL,
`reg_datetime` datetime DEFAULT NULL,
`ActivationCode` varchar(16) NOT NULL DEFAULT '',
`CID` int(11) DEFAULT NULL,
`affiliateID` int(11) NOT NULL,
`affiliateEmailOrders` int(11) NOT NULL DEFAULT '1',
`affiliateEmailPayments` int(11) NOT NULL DEFAULT '1',
`actions` text NOT NULL,
`area` text NOT NULL,
`city` text NOT NULL,
`street` text NOT NULL,
`house` text NOT NULL,
`build` text NOT NULL,
`room` text NOT NULL,
`phone` text NOT NULL,
`fake` int(10) NOT NULL,
PRIMARY KEY (`customerID`),
UNIQUE KEY `ok_index` (`OdnoklasID`),
KEY `AFFILIATEID` (`affiliateID`)
) ENGINE=InnoDB DEFAULT CHARSET=cp1251 AUTO_INCREMENT=3504023 ;
INSERT INTO bysr_customers (OdnoklasID, first_name, last_name, custgroupID, reg_datetime, CID, affiliateEmailOrders, affiliateEmailPayments, fake) VALUES ('fake_4', '2', '3', '1', '2012-02-22 16:42:54', '1', '1', '1', '0');
mysql> SHOW profile FOR QUERY 7;
+----------------------+----------+
| Status | Duration |
+----------------------+----------+
| starting | 0.000043 |
| checking permissions | 0.000007 |
| Opening tables | 0.000044 |
| System lock | 0.000004 |
| Table lock | 0.000004 |
| init | 0.000018 |
| update | 7.521551 |
| end | 0.000011 |
| query end | 0.000006 |
| freeing items | 2.573892 |
| logging slow query | 0.000013 |
| logging slow query | 0.000035 |
| cleaning up | 0.000006 |
+----------------------+----------+
13 rows in set (0.00 sec)
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 cp1251
character_set_filesystem binary
character_set_results utf8
character_set_server cp1251
character_set_system utf8
character_sets_dir /usr/share/mysql/charsets/
collation_connection utf8_general_ci
collation_database cp1251_general_ci
collation_server cp1251_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 10
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/Ubuntu-1104-natty-64-minimal.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 YES
hostname Ubuntu-1104-natty-64-minimal
identity 0
ignore_builtin_innodb OFF
init_connect
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 10737418240
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_on_metadata ON
innodb_support_xa ON
innodb_sync_spin_loops 20
Variable_name Value
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 2147483648
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 OFF
log_bin OFF
log_bin_trust_function_creators OFF
log_bin_trust_routine_creators OFF
log_error /var/log/mysql/error.log
log_output FILE
log_queries_not_using_indexes OFF
log_slave_updates OFF
log_slow_queries ON
log_warnings 1
long_query_time 2.000000
low_priority_updates OFF
lower_case_file_system OFF
lower_case_table_names 0
max_allowed_packet 16777216
max_binlog_cache_size 18446744073709547520
max_binlog_size 104857600
max_connect_errors 10
max_connections 151
max_delayed_threads 20
max_error_count 64
max_heap_table_size 1073741824
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 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 BACKUP
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_so...
pid_file /var/lib/mysql/Ubuntu-1104-natty-64-minimal.pid
plugin_dir /usr/lib/mysql/plugin
port 3306
preload_buffer_size 32768
profiling ON
profiling_history_size 15
protocol_version 10
pseudo_thread_id 79658
query_alloc_block_size 8192
query_cache_limit 10485760
query_cache_min_res_unit 4096
query_cache_size 314572800
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
Variable_name Value
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_net_timeout 3600
slave_skip_errors OFF
slave_transaction_retries 10
slow_launch_time 2
slow_query_log ON
slow_query_log_file /var/log/mysql/mysql-slow.log
socket /var/run/mysqld/mysqld.sock
sort_buffer_size 268435456
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 MSK
table_definition_cache 256
table_lock_wait_timeout 50
table_open_cache 64
table_type MyISAM
thread_cache_size 8
thread_handling one-thread-per-connection
thread_stack 196608
time_format %H:%i:%s
time_zone SYSTEM
timed_mutexes OFF
timestamp 1329916096
tmp_table_size 1073741824
tmpdir /tmp
transaction_alloc_block_size 8192
transaction_prealloc_size 4096
tx_isolation REPEATABLE-READ
unique_checks ON
updatable_views_with_limit YES
version 5.1.54-1ubuntu4-log
version_comment (Ubuntu)
version_compile_machine x86_64
version_compile_os debian-linux-gnu
wait_timeout 28800
warning_count 0
答案 0 :(得分：3)
如果刚刚开始发生，我会猜测IO争用（磁盘或内存）。检查你的系统。
如果它间歇性地发生，但通常，我会怀疑VARCHAR（255）OdnoklasID列上的大唯一索引。尝试暂时删除索引以查看插入是否有所改进，然后查看是否可以改进（缩短）或不使用索引。
如果要进行多次插入，请将它们组合成一个语句，因为索引会在每个语句之后更新。
您的VARCHAR（255）字段（添加了4个字节用于添加的Integer主键）是每个索引条目259个字节。索引的MySQL InnoDB页面大小为16KB，因此每页最多可以获得63个索引条目，这通常会导致插入页面分割。
答案 1 :(得分：2)
我建议删除UNIQUE KEY约束并查看它是如何运行的。
答案 2 :(得分：0)
| update | 7.521551
您是否在此表上有可能导致更多DML操作的触发器？
或者插入后需要保留太多索引导致缓慢
答案 3 :(得分：0)
这需要吗？
kopilka int（110）
使用varchar（110）不是更好
答案 4 :(得分：0)
InnoDB是一个非常好的引擎。但是，它高度依赖于“调整”。有一件事是，如果你的插入不是增加主键的顺序，innoDB可能比MyISAM花费更长的时间。通过设置更高的innodb_buffer_pool_size可以轻松克服这个问题。我的建议是将其设置为总RAM的60-70％。 我现在正在生产4个这样的服务器，每分钟插入大约350万行。他们已经接近3太字节。它必须是InnoDB，因为高度并发的插入。 还有其他方法可以加快插入速度。我对一些人进行了基准测试。