我安装了MySQL，它分配的内存比我预期的多得多。我想了解修复根本原因的地方。
为了估算RAM的使用情况，我使用这个公式：
key_buffer_size + query_cache_size + innodb_buffer_pool_size + innodb_additional_mem_pool_size + innodb_log_buffer_size + Max_used_connections * (read_buffer_size + read_rnd_buffer_size + sort_buffer_size+ join_buffer_size+ binlog_cache_size + thread_stack + tmp_table_size)
此公式产生约5.3 GB的估计分配。 相反，MySQL使用的RAM继续增长，经过几天的活动，它远远超过9 GB（大量写入交换）。
我忘记了什么？我如何理解谁在吃剩余的RAM？
更多信息。
我在RHEL6.3 64位上运行MySQL CE 5.6.17。我的服务器有6 GB RAM和8GB交换空间。 我一直有大约150个与MySQL有关的活动连接，但是我将max_connections保持在更高的值以适应峰值，并预见到这台机器上会有更多的流量。 我只使用InnoDB。 我的应用程序使用池连接到池。生成器打开连接并在完成后将它们释放到池中。我已经测量过我总是有几个并行请求，并且池化可以加快一点连接创建速度（因此查询速度更快）。池（DBCP）自动调整合理数量的活动连接，它通常在100-150左右。 我已经尝试过了：
- 查杀连接不会释放RAM
- FLUSH TABLES没有释放RAM
按照我的配置：
---- my.cnf -----
[client]
port = 3306
socket = /var/lib/mysql/mysql.sock
default-character-set=utf8
[mysqld]
port = 3306
socket = /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 64M
max_allowed_packet = 1M
table_open_cache = 256
key_buffer_size = 128M
sort_buffer_size = 524288
read_buffer_size = 131072
read_rnd_buffer_size = 524288
myisam_sort_buffer_size = 524288
tmp_table_size=10M
performance_schema=0
thread_cache_size = 50
query_cache_type = OFF
query_cache_size = 0
server-id = 1
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
innodb_data_home_dir = "/data/mysqldata"
innodb_log_group_home_dir = "/data1/mysqllog"
innodb_buffer_pool_size = 3000M
innodb_buffer_pool_instances = 3
innodb_log_file_size = 750M
innodb_flush_log_at_trx_commit = 2
datadir = "/data/mysqldata"
innodb_flush_method=O_DIRECT
max_connections = 1650
slow_query_log = 1
slow_query_log_file = slow.log
long_query_time = 10
autocommit=1
init-connect='SET NAMES utf8'
character-set-server = utf8
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
default-character-set=utf8
[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
---------
这是几天活动后分配给mysql的内存：
[root@G-VelocityDB ~]# ps aux | grep mysql
root 1963 0.0 0.0 108332 1492 ? S May09 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/data/mysqldata --pid-file=/data/mysqldata/G-VelocityDB.pid
mysql 2583 80.4 88.3 9816560 8949704 ? Sl May09 3538:34 /usr/sbin/mysqld --basedir=/usr --datadir=/data/mysqldata --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/data/mysqldata/G-VelocityDB.err --pid-file=/data/mysqldata/G-VelocityDB.pid --socket=/var/lib/mysql/mysql.sock --port=3306
root 21450 0.0 0.0 103244 852 pts/1 S+ 08:51 0:00 grep mysql
# cat /proc/2583/status
Name: mysqld
State: S (sleeping)
Tgid: 2583
Pid: 2583
PPid: 1963
TracerPid: 0
Uid: 496 496 496 496
Gid: 493 493 493 493
Utrace: 0
FDSize: 512
Groups: 493
VmPeak: 9882096 kB
VmSize: 9816560 kB
VmLck: 0 kB
VmHWM: 8950684 kB
VmRSS: 8949652 kB
VmData: 9771648 kB
VmStk: 88 kB
VmExe: 11684 kB
VmLib: 3928 kB
VmPTE: 17996 kB
VmSwap: 0 kB
Threads: 161
SigQ: 0/78996
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000087007
SigIgn: 0000000000001006
SigCgt: 00000001800066e9
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: ffffffffffffffff
Cpus_allowed: 3
Cpus_allowed_list: 0-1
Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list: 0
voluntary_ctxt_switches: 15496
nonvoluntary_ctxt_switches: 337
我服务器上的更多信息：
GLOBAL STATUS:
Aborted_clients............ 237
Aborted_connects............. 10
Binlog_cache_disk_use.......... 0
Binlog_cache_use............. 0
Binlog_stmt_cache_disk_use......... 0
Binlog_stmt_cache_use.......... 0
Bytes_received............. 4194923507
Bytes_sent............. 11895871264
Com_admin_commands........... 455
Com_assign_to_keycache........... 0
Com_alter_db............. 0
Com_alter_db_upgrade........... 0
Com_alter_event............ 0
Com_alter_function........... 0
Com_alter_procedure.......... 0
Com_alter_server............. 0
Com_alter_table............ 0
Com_alter_tablespace........... 0
Com_alter_user............. 0
Com_analyze............ 0
Com_begin.............. 2
Com_binlog............. 0
Com_call_procedure........... 4868660
Com_change_db............ 8
Com_change_master............ 0
Com_check.............. 0
Com_checksum............. 0
Com_create_db............ 0
Com_create_event............. 0
Com_create_function.......... 0
Com_create_index............. 0
Com_create_procedure........... 0
Com_create_server............ 0
Com_create_table............. 0
Com_create_trigger........... 0
Com_create_udf............. 0
Com_create_user............ 0
Com_create_view............ 0
Com_dealloc_sql............ 0
Com_delete............. 19742
Com_delete_multi............. 0
Com_do............... 0
Com_drop_db............ 0
Com_drop_event............. 0
Com_drop_function............ 0
Com_drop_index............. 0
Com_drop_procedure........... 0
Com_drop_server............ 0
Com_drop_table............. 0
Com_drop_trigger............. 0
Com_drop_user............ 0
Com_drop_view............ 0
Com_empty_query............ 0
Com_execute_sql............ 0
Com_flush.............. 0
Com_get_diagnostics.......... 0
Com_grant.............. 0
Com_ha_close............. 0
Com_ha_open............ 0
Com_ha_read............ 0
Com_help............... 57
Com_insert............. 7149329
Com_insert_select............ 44
Com_install_plugin........... 0
Com_kill............... 0
Com_load............... 0
Com_lock_tables............ 0
Com_optimize............. 0
Com_preload_keys............. 0
Com_prepare_sql............ 0
Com_purge.............. 0
Com_purge_before_date.......... 0
Com_release_savepoint.......... 0
Com_rename_table............. 0
Com_rename_user............ 0
Com_repair............. 0
Com_replace............ 0
Com_replace_select........... 0
Com_reset.............. 0
Com_resignal............. 0
Com_revoke............. 0
Com_revoke_all............. 0
Com_rollback............. 6366209
Com_rollback_to_savepoint.......... 0
Com_savepoint............ 0
Com_select............. 16223159
Com_set_option............. 13471816
Com_signal............. 0
Com_show_binlog_events........... 0
Com_show_binlogs............. 0
Com_show_charsets............ 0
Com_show_collations.......... 632
Com_show_create_db........... 0
Com_show_create_event.......... 0
Com_show_create_func........... 0
Com_show_create_proc........... 0
Com_show_create_table.......... 0
Com_show_create_trigger.......... 0
Com_show_databases........... 21
Com_show_engine_logs........... 0
Com_show_engine_mutex.......... 0
Com_show_engine_status........... 0
Com_show_events............ 0
Com_show_errors............ 0
Com_show_fields............ 101
Com_show_function_code........... 0
Com_show_function_status........... 3
Com_show_grants............ 0
Com_show_keys............ 9
Com_show_master_status........... 0
Com_show_open_tables........... 0
Com_show_plugins............. 2
Com_show_privileges.......... 0
Com_show_procedure_code.......... 0
Com_show_procedure_status.......... 3
Com_show_processlist........... 0
Com_show_profile............. 0
Com_show_profiles............ 0
Com_show_relaylog_events........... 0
Com_show_slave_hosts........... 0
Com_show_slave_status.......... 2
Com_show_status............ 805
Com_show_storage_engines........... 0
Com_show_table_status.......... 0
Com_show_tables............ 13
Com_show_triggers............ 0
Com_show_variables........... 667
Com_show_warnings............ 0
Com_slave_start............ 0
Com_slave_stop............. 0
Com_stmt_close............. 0
Com_stmt_execute............. 0
Com_stmt_fetch............. 0
Com_stmt_prepare............. 0
Com_stmt_reprepare........... 0
Com_stmt_reset............. 0
Com_stmt_send_long_data.......... 0
Com_truncate............. 0
Com_uninstall_plugin........... 0
Com_unlock_tables............ 0
Com_update............. 168248
Com_update_multi............. 0
Com_xa_commit............ 0
Com_xa_end............. 0
Com_xa_prepare............. 0
Com_xa_recover............. 0
Com_xa_rollback............ 0
Com_xa_start............. 0
Compression............ OFF
Connection_errors_accept........... 0
Connection_errors_internal......... 0
Connection_errors_max_connections........ 0
Connection_errors_peer_address......... 0
Connection_errors_select........... 0
Connection_errors_tcpwrap.......... 0
Connections............ 670
Created_tmp_disk_tables.......... 838
Created_tmp_files............ 6
Created_tmp_tables........... 5214
Delayed_errors............. 0
Delayed_insert_threads........... 0
Delayed_writes............. 0
Flush_commands............. 1
Handler_commit............. 30081211
Handler_delete............. 6300384
Handler_discover............. 0
Handler_external_lock.......... 67018766
Handler_mrr_init............. 0
Handler_prepare............ 0
Handler_read_first........... 11247573
Handler_read_key............. 22140615
Handler_read_last............ 0
Handler_read_next............ 1099116268
Handler_read_prev............ 26294847
Handler_read_rnd............. 38722
Handler_read_rnd_next.......... 22705321
Handler_rollback............. 60
Handler_savepoint............ 0
Handler_savepoint_rollback......... 0
Handler_update............. 167974
Handler_write............ 7852897
Innodb_buffer_pool_dump_status......... not started
Innodb_buffer_pool_load_status......... not started
Innodb_buffer_pool_pages_data........ 186890
Innodb_buffer_pool_bytes_data........ 3062005760
Innodb_buffer_pool_pages_dirty......... 6539
Innodb_buffer_pool_bytes_dirty......... 107134976
Innodb_buffer_pool_pages_flushed......... 584944
Innodb_buffer_pool_pages_free........ 3072
Innodb_buffer_pool_pages_misc........ 2035
Innodb_buffer_pool_pages_total......... 191997
Innodb_buffer_pool_read_ahead_rnd........ 0
Innodb_buffer_pool_read_ahead........ 129315
Innodb_buffer_pool_read_ahead_evicted...... 0
Innodb_buffer_pool_read_requests......... 531706692
Innodb_buffer_pool_reads........... 215710
Innodb_buffer_pool_wait_free......... 0
Innodb_buffer_pool_write_requests........ 84850509
Innodb_data_fsyncs........... 445789
Innodb_data_pending_fsyncs......... 0
Innodb_data_pending_reads.......... 0
Innodb_data_pending_writes......... 0
Innodb_data_read............. 5930536960
Innodb_data_reads............ 379282
Innodb_data_writes........... 3707043
Innodb_data_written.......... 24355757056
Innodb_dblwr_pages_written......... 584944
Innodb_dblwr_writes.......... 16463
Innodb_have_atomic_builtins........ ON
Innodb_log_waits............. 0
Innodb_log_write_requests.......... 8093999
Innodb_log_writes............ 3091626
Innodb_os_log_fsyncs........... 168887
Innodb_os_log_pending_fsyncs......... 0
Innodb_os_log_pending_writes......... 0
Innodb_os_log_written.......... 5187414528
Innodb_page_size............. 16384
Innodb_pages_created........... 76352
Innodb_pages_read............ 358104
Innodb_pages_written........... 584944
Innodb_row_lock_current_waits........ 0
Innodb_row_lock_time........... 17326
Innodb_row_lock_time_avg........... 18
Innodb_row_lock_time_max........... 1027
Innodb_row_lock_waits.......... 946
Innodb_rows_deleted.......... 6300384
Innodb_rows_inserted........... 7149273
Innodb_rows_read............. 1140478060
Innodb_rows_updated.......... 164739
Innodb_num_open_files.......... 300
Innodb_truncated_status_writes......... 0
Innodb_available_undo_logs......... 128
Key_blocks_not_flushed........... 0
Key_blocks_unused............ 107146
Key_blocks_used............ 25
Key_read_requests............ 811
Key_reads.............. 25
Key_write_requests........... 0
Key_writes............. 0
Last_query_cost............ 0.000000
Last_query_partial_plans........... 0
Max_used_connections........... 172
Not_flushed_delayed_rows........... 0
Open_files............. 11
Open_streams............. 0
Open_table_definitions........... 69
Open_tables............ 256
Opened_files............. 3701
Opened_table_definitions........... 69
Opened_tables............ 308
Prepared_stmt_count.......... 0
Queries.............. 54874967
Questions.............. 49932690
Select_full_join............. 1196
Select_full_range_join........... 0
Select_range............. 494248
Select_range_check........... 0
Select_scan............ 9551157
Slow_launch_threads.......... 0
Slow_queries............. 63
Sort_merge_passes............ 0
Sort_range............. 1
Sort_rows.............. 45942
Sort_scan.............. 2550
Table_locks_immediate.......... 26010899
Table_locks_waited........... 0
Table_open_cache_hits.......... 24039437
Table_open_cache_misses.......... 308
Table_open_cache_overflows......... 45
Tc_log_max_pages_used.......... 0
Tc_log_page_size............. 0
Tc_log_page_waits............ 0
Threads_cached............. 47
Threads_connected............ 102
Threads_created............ 282
Threads_running............ 1
Uptime............... 171023
Uptime_since_flush_status.......... 171023
Com_commit............. 6536509
SHOW ENGINE INNODB STATUS;
Per second averages calculated from the last 17 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 268650 srv_active, 0 srv_shutdown, 12135 srv_idle
srv_master_thread log flush and writes: 280785
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 1688081
OS WAIT ARRAY INFO: signal count 957822
Mutex spin waits 1873319, rounds 44188913, OS waits 1295453
RW-shared spins 469687, rounds 12569665, OS waits 334361
RW-excl spins 35863, rounds 1100713, OS waits 24644
Spin rounds per wait: 23.59 mutex, 26.76 RW-shared, 30.69 RW-excl
------------------------
LATEST DETECTED DEADLOCK
------------------------
2014-05-07 17:22:56 7f0d94a1a700
*** (1) TRANSACTION:
TRANSACTION 1119978000, ACTIVE 0 sec starting index read
mysql tables in use 10, locked 10
LOCK WAIT 7 lock struct(s), heap size 1184, 2 row lock(s)
MySQL thread id 69, OS thread handle 0x7f0d91c0d700, query id 73382628 g-velocity.abodata.domain 10.0.2.180 platone updating
DELETE FROM PacketDay PARTITION(p1730,p1731,p1732,p1733,p1734,p1735,p1736,p1737,p1738,p1739) WHERE XXXX=4 AND StartTime<1399388476900 LIMIT 50000
*** (1) WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 5831 page no 27 n bits 224 index `PRIMARY` of table `ViewDb`.`PacketDay` /* Partition `p1732` */ trx id 1119978000 lock_mode X locks rec but not gap waiting
Record lock, heap no 2 PHYSICAL RECORD: n_fields 17; compact format; info bits 32
0: len 8; hex 80000145cf7ab51d; asc E z ;;
1: len 4; hex 80000e94; asc ;;
2: len 6; hex 000042c1820e; asc B ;;
3: len 7; hex 65000480151812; asc e ;;
4: len 4; hex 80000005; asc ;;
5: len 8; hex 80000145cf7ab51d; asc E z ;;
6: len 8; hex 8000000000000000; asc ;;
7: len 4; hex 80000004; asc ;;
8: len 4; hex 80000003; asc ;;
9: SQL NULL;
10: len 8; hex 0000000000001c40; asc @;;
11: len 0; hex ; asc ;;
12: len 1; hex 30; asc 0;;
13: len 2; hex 8001; asc ;;
14: len 4; hex 80000000; asc ;;
15: len 8; hex 80000145cf7ab3b6; asc E z ;;
16: len 24; hex 5b303d4f66662c20313d52696768742c20323d4c6566745d; asc [0=Off, 1=Right, 2=Left];;
*** (2) TRANSACTION:
TRANSACTION 1119977998, ACTIVE 0 sec updating or deleting
mysql tables in use 10, locked 10
32 lock struct(s), heap size 6544, 6 row lock(s), undo log entries 1
MySQL thread id 36, OS thread handle 0x7f0d94a1a700, query id 73382652 g-velocity.abodata.domain 10.0.2.180 platone updating
DELETE FROM PacketDay PARTITION(p1730,p1731,p1732,p1733,p1734,p1735,p1736,p1737,p1738,p1739) WHERE XXXX=5 AND StartTime<1399388476871 LIMIT 50000
*** (2) HOLDS THE LOCK(S):
RECORD LOCKS space id 5831 page no 27 n bits 224 index `PRIMARY` of table `ViewDb`.`PacketDay` /* Partition `p1732` */ trx id 1119977998 lock_mode X locks rec but not gap
Record lock, heap no 2 PHYSICAL RECORD: n_fields 17; compact format; info bits 32
0: len 8; hex 80000145cf7ab51d; asc E z ;;
1: len 4; hex 80000e94; asc ;;
2: len 6; hex 000042c1820e; asc B ;;
3: len 7; hex 65000480151812; asc e ;;
4: len 4; hex 80000005; asc ;;
5: len 8; hex 80000145cf7ab51d; asc E z ;;
6: len 8; hex 8000000000000000; asc ;;
7: len 4; hex 80000004; asc ;;
8: len 4; hex 80000003; asc ;;
9: SQL NULL;
10: len 8; hex 0000000000001c40; asc @;;
11: len 0; hex ; asc ;;
12: len 1; hex 30; asc 0;;
13: len 2; hex 8001; asc ;;
14: len 4; hex 80000000; asc ;;
15: len 8; hex 80000145cf7ab3b6; asc E z ;;
16: len 24; hex 5b303d4f66662c20313d52696768742c20323d4c6566745d; asc [0=Off, 1=Right, 2=Left];;
*** (2) WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 5831 page no 28 n bits 824 index `idx_XXXX_YYYY` of table `AAAA`.`PacketDay` /* Partition `p1732` */ trx id 1119977998 lock_mode X locks rec but not gap waiting
Record lock, heap no 686 PHYSICAL RECORD: n_fields 3; compact format; info bits 0
0: len 4; hex 80000005; asc ;;
1: len 8; hex 80000145cf7ab51d; asc E z ;;
2: len 4; hex 80000e94; asc ;;
*** WE ROLL BACK TRANSACTION (1)
------------
TRANSACTIONS
------------
Trx id counter 1136364858
Purge done for trx's n:o < 1136364106 undo n:o < 0 state: running but idle
History list length 984
LIST OF TRANSACTIONS FOR EACH SESSION:
[...]
--------
FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (write thread)
Pending normal aio reads: 0 [0, 0, 0, 0] , aio writes: 0 [0, 0, 0, 0] ,
ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
Pending flushes (fsync) log: 0; buffer pool: 0
1320822 OS file reads, 8503653 OS file writes, 2583777 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.12 writes/s, 0.06 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 67353, seg size 67355, 5035 merges
merged operations:
insert 65890, delete mark 110773, delete 319
discarded operations:
insert 0, delete mark 0, delete 0
Hash table size 6225523, node heap has 1792 buffer(s)
0.06 hash searches/s, 0.94 non-hash searches/s
---
LOG
---
Log sequence number 291212776237
Log flushed up to 291212776237
Pages flushed up to 291114806316
Last checkpoint at 291114806316
0 pending log writes, 0 pending chkp writes
4968792 log i/o's done, 0.12 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total memory allocated 3219456000; in additional pool allocated 0
Dictionary memory allocated 36167844
Buffer pool size 191997
Free buffers 3072
Database pages 187133
Old database pages 69022
Modified db pages 8213
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 653753, not young 38903623
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1310744, created 130762, written 3414584
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 187133, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
----------------------
INDIVIDUAL BUFFER POOL INFO
----------------------
---BUFFER POOL 0
Buffer pool size 63999
Free buffers 1024
Database pages 62402
Old database pages 23015
Modified db pages 2482
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 197235, not young 11921942
0.00 youngs/s, 0.00 non-youngs/s
Pages read 423522, created 40807, written 1078968
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 62402, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 1
Buffer pool size 63999
Free buffers 1024
Database pages 62366
Old database pages 23006
Modified db pages 2909
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 219800, not young 13508215
0.00 youngs/s, 0.00 non-youngs/s
Pages read 439314, created 44996, written 1162507
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 62366, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
---BUFFER POOL 2
Buffer pool size 63999
Free buffers 1024
Database pages 62365
Old database pages 23001
Modified db pages 2822
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 236718, not young 13473466
0.00 youngs/s, 0.00 non-youngs/s
Pages read 447908, created 44959, written 1173109
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 62365, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
7 read views open inside InnoDB
Main thread process no. 5965, id 139696323659520, state: sleeping
Number of rows inserted 13664081, updated 230718, deleted 8001095, read 31517028476
0.06 inserts/s, 0.06 updates/s, 0.00 deletes/s, 43.59 reads/s
select sum(data_length+index_length) from information_schema.tables where engine='memory';
Result: '0'
正如所建议的那样，我在服务器上启用和不启用分区运行（我有5个表，每个分区有2000个分区），并且似乎禁用分区在某种程度上有所帮助。但我仍然没有弄清楚原因，我根本无法消除分区。
正如所建议的那样，我在valgrind下运行了一些运行mysql的基本测试来进行泄漏检测：http://pastebin.com/W3ZMAGY4
和地块：http://pastebin.com/LweQHn3M 这些测试使用MySQL默认配置执行。
如果我正确读取输出，则没有发现相关的泄漏，每个连接都有大量的内存消耗（每个连接500 MB）。
这是对的吗？知道为什么会这么成长吗？
答案 0 :(得分：2)
在innodb_additional_mem_pool_size之外打开很多表时，InnoDB数据字典可以不受限制地增长，如果你有数千个表，它通常会变得非常庞大。这与连接数无关。
我已经看到其他人报告说MySQL 5.6有很多内存使用量，但我们还没有明确地跟踪它。人们必须在valgrind下运行mysqld来跟踪内存增长。
MySQL 5.7仍在开发中，但他们正在创建新的PERFORMANCE_SCHEMA工具来跟踪内存使用情况。
如果仅由InnoDB数据字典报告的内存并不能解释内存增长，我建议您阅读以下错误报告，看看它们是否适用于您的情况：