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Re: Need help to improve innodb performance
Posted by: Song Wang
Date: April 02, 2009 01:22AM

hi, Rich,

Thank you for your helpful reply.
Here's some supplementary inforation:
-------------
>mysql --version
mysql Ver 14.12 Distrib 5.1.31, for redhat-linux-gnu (x86_64) using readline 5.1

Disk size
One local disk. Size is 500G

IO
Now 3M/sec. Desired about 10M/sec
---------------

I modified the data model according to your suggestions. The table name slightly changed.
----------------
mysql> show create table tab_proclog_nso\G
*************************** 1. row ***************************
Table: tab_proclog_nso
Create Table: CREATE TABLE `tab_proclog_nso` (
`log_root_id` varchar(100) NOT NULL,
`log_sub_id` varchar(30) NOT NULL,
`hour` int(4) unsigned DEFAULT NULL,
`transaction_id` varchar(32) DEFAULT NULL,
`instance` varchar(1000) NOT NULL,
`oper_id` int(10) unsigned NOT NULL,
`status` varchar(30) NOT NULL,
`hostname` varchar(200) DEFAULT NULL,
`username` varchar(100) DEFAULT NULL,
`starttime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`responsetime` int(10) unsigned NOT NULL COMMENT 'microsecond for this outbound',
`responsecode` varchar(200) DEFAULT NULL,
`fulloperation` varchar(4000) DEFAULT NULL,
`fullresult` varchar(4000) DEFAULT NULL,
PRIMARY KEY (`log_root_id`,`log_sub_id`,`starttime`),
KEY `FK_nso_oper_id` (`oper_id`),
CONSTRAINT `FK_nso_oper_id` FOREIGN KEY (`oper_id`) REFERENCES `tab_proclog_oper` (`oper_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
1 row in set (0.00 sec)

mysql> show create table tab_proclog_keys\G
*************************** 1. row ***************************
Table: tab_proclog_keys
Create Table: CREATE TABLE `tab_proclog_keys` (
`log_root_id` varchar(100) NOT NULL,
`log_sub_id` varchar(30) NOT NULL,
`starttime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`name` varchar(200) NOT NULL,
`value` varchar(200) NOT NULL,
PRIMARY KEY (`log_root_id`,`log_sub_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
1 row in set (0.00 sec)

mysql> show create table tab_proclog_oper\G
*************************** 1. row ***************************
Table: tab_proclog_oper
Create Table: CREATE TABLE `tab_proclog_oper` (
`oper_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`operation` varchar(200) NOT NULL,
`target` varchar(500) NOT NULL,
`type` varchar(10) NOT NULL,
PRIMARY KEY (`oper_id`)
) ENGINE=InnoDB AUTO_INCREMENT=49 DEFAULT CHARSET=latin1
1 row in set (0.00 sec)

And I tuned the concurrent client session number, ranging from 8 to 64. Also tuned the data size in one tx ranging from 1M to 3M(batch insert).
I get little improvement. The peak throughput of innodb engine is about 3M as before.

So, i believe innodb has a bottleneck on total throughput and i wonder whether it's possible to increase the throughput.

I paste the innodb status here. There're lots of locks. I once tried to remove all the keys except those PK, in order to get rid of the locks on each insertion operation. But it doesn't work.
I was told that when setting innodb_autoinc_lock_mode=2, we get rid of table lock when inserting into auto_inc-columned table. I turned to version 5.1.31. And I don't know whether it take effects.

Sorry for the long and tiresome text here. But i think maybe it helps.
----------------
mysql> show innodb status\G
*************************** 1. row ***************************
Type: InnoDB
Name:
Status:
=====================================
090402 4:38:17 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 5 seconds
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 2216031, signal count 1030677
--Thread 1151531328 has waited at btr/btr0cur.c line 384 for 0.00 seconds the semaphore:
S-lock on RW-latch at 0x2aaab5038938 created in file dict/dict0dict.c line 1356
a writer (thread id 1143810368) has reserved it in mode exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1149667648 has waited at btr/btr0cur.c line 384 for 0.00 seconds the semaphore:
S-lock on RW-latch at 0x2aaab5038938 created in file dict/dict0dict.c line 1356
a writer (thread id 1143810368) has reserved it in mode exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1151265088 has waited at btr/btr0cur.c line 384 for 0.00 seconds the semaphore:
S-lock on RW-latch at 0x2aaab5038938 created in file dict/dict0dict.c line 1356
a writer (thread id 1143810368) has reserved it in mode exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1146472768 has waited at btr/btr0cur.c line 384 for 0.00 seconds the semaphore:
S-lock on RW-latch at 0x2aaab5038938 created in file dict/dict0dict.c line 1356
a writer (thread id 1143810368) has reserved it in mode exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1151797568 has waited at btr/btr0cur.c line 384 for 0.00 seconds the semaphore:
S-lock on RW-latch at 0x2aaab5038938 created in file dict/dict0dict.c line 1356
a writer (thread id 1143810368) has reserved it in mode exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1157388608 has waited at btr/btr0cur.c line 377 for 0.00 seconds the semaphore:
X-lock on RW-latch at 0x2aaab506d538 created in file dict/dict0dict.c line 1356
a writer (thread id 1144076608) has reserved it in mode wait exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1156323648 has waited at btr/btr0cur.c line 377 for 0.00 seconds the semaphore:
X-lock on RW-latch at 0x2aaab506d538 created in file dict/dict0dict.c line 1356
a writer (thread id 1144076608) has reserved it in mode wait exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1150998848 has waited at btr/btr0cur.c line 384 for 0.00 seconds the semaphore:
S-lock on RW-latch at 0x2aaab5038938 created in file dict/dict0dict.c line 1356
a writer (thread id 1143810368) has reserved it in mode exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
--Thread 1142479168 has waited at btr/btr0cur.c line 377 for 0.00 seconds the semaphore:
X-lock on RW-latch at 0x2aaab5038938 created in file dict/dict0dict.c line 1356
a writer (thread id 1143810368) has reserved it in mode exclusive
number of readers 0, waiters flag 1
Last time read locked in file btr/btr0cur.c line 384
Last time write locked in file btr/btr0cur.c line 377
Mutex spin waits 0, rounds 104319797, OS waits 280212
RW-shared spins 1270460, OS waits 809909; RW-excl spins 1371931, OS waits 937322
------------
TRANSACTIONS
------------
Trx id counter 0 10363
Purge done for trx's n:o < 0 0 undo n:o < 0 0
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 0 0, not started, process no 18387, OS thread id 1141414208
MySQL thread id 1, query id 2001034 localhost root
show innodb status
---TRANSACTION 0 10362, ACTIVE 2 sec, process no 18387, OS thread id 1141680448 waiting in InnoDB queue
mysql tables in use 1, locked 1
1 lock struct(s), heap size 368, 0 row lock(s), undo log entries 117
MySQL thread id 2, query id 2001002 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_keys(log_root_id,log_sub_id,starttime,name,value) VALUES('g00000000000000000000192218CAI','/0','2009-04-01 10:24:13','a','1')
Trx read view will not see trx with id >= 0 10363, sees < 0 10290
---TRANSACTION 0 10361, ACTIVE 4 sec, process no 18387, OS thread id 1141946688 waiting in InnoDB queue
mysql tables in use 1, locked 1
1 lock struct(s), heap size 368, 0 row lock(s), undo log entries 229
MySQL thread id 3, query id 2001015 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_keys(log_root_id,log_sub_id,starttime,name,value) VALUES('g00000000000000000000192030CAI','/0','2009-04-01 10:24:12','a','1')
Trx read view will not see trx with id >= 0 10362, sees < 0 10290
---TRANSACTION 0 10360, ACTIVE 4 sec, process no 18387, OS thread id 1150732608 waiting in InnoDB queue
mysql tables in use 1, locked 1
1 lock struct(s), heap size 368, 0 row lock(s), undo log entries 239
MySQL thread id 36, query id 2001028 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_keys(log_root_id,log_sub_id,starttime,name,value) VALUES('g00000000000000000000189940CAI','/0','2009-04-01 10:24:07','a','1')
Trx read view will not see trx with id >= 0 10361, sees < 0 10290
---TRANSACTION 0 10359, ACTIVE 6 sec, process no 18387, OS thread id 1150998848 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 300
MySQL thread id 37, query id 2000496 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000189401CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:24:06',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10360, sees < 0 10290
---TRANSACTION 0 10358, ACTIVE 6 sec, process no 18387, OS thread id 1149667648 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 330
MySQL thread id 32, query id 2000436 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000190031CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:24:07',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10359, sees < 0 10290
---TRANSACTION 0 10357, ACTIVE 6 sec, process no 18387, OS thread id 1142479168 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 363
MySQL thread id 5, query id 2000432 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000191264CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:24:10',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10358, sees < 0 10290
---TRANSACTION 0 10356, ACTIVE 7 sec, process no 18387, OS thread id 1143810368 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 397
MySQL thread id 10, query id 2000426 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000190397CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:24:08',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10357, sees < 0 10290
---TRANSACTION 0 10355, ACTIVE 7 sec, process no 18387, OS thread id 1151797568 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 409
MySQL thread id 40, query id 2000484 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000188010CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:24:02',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10356, sees < 0 10290
---TRANSACTION 0 10354, ACTIVE 7 sec, process no 18387, OS thread id 1146472768 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 421
MySQL thread id 20, query id 2000482 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000191622CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:24:11',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10355, sees < 0 10290
---TRANSACTION 0 10353, ACTIVE 8 sec, process no 18387, OS thread id 1151265088 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 405
MySQL thread id 38, query id 2000481 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000186206CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:23:58',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10354, sees < 0 10290
---TRANSACTION 0 10352, ACTIVE 12 sec, process no 18387, OS thread id 1148868928 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 610
MySQL thread id 29, query id 2000992 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_keys(log_root_id,log_sub_id,starttime,name,value) VALUES('g00000000000000000000185804CAI','/1','2009-04-01 10:23:57','a','1')
Trx read view will not see trx with id >= 0 10353, sees < 0 10289
---TRANSACTION 0 10351, ACTIVE 12 sec, process no 18387, OS thread id 1151531328 inserting, thread declared inside InnoDB 500
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 587
MySQL thread id 39, query id 2000464 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_cso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000188788CAI','/0',10,'123','a=1',1,'Success','ema1349','sogadm','2009-04-01 10:24:04',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10352, sees < 0 10289
---TRANSACTION 0 10350, ACTIVE 22 sec, process no 18387, OS thread id 1149135168 waiting in InnoDB queue
mysql tables in use 1, locked 1
2 lock struct(s), heap size 368, 0 row lock(s), undo log entries 677
MySQL thread id 30, query id 2001024 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_keys(log_root_id,log_sub_id,starttime,name,value) VALUES('g00000000000000000000188218CAI','/6','2009-04-01 10:24:03','a','6')
Trx read view will not see trx with id >= 0 10351, sees < 0 10287
---TRANSACTION 0 10290, ACTIVE 122 sec, process no 18387, OS thread id 1145674048 waiting in InnoDB queue
mysql tables in use 1, locked 1
3 lock struct(s), heap size 368, 0 row lock(s), undo log entries 2887
MySQL thread id 17, query id 2001017 192.168.30.84 dve_proclog_user update
/* */ INSERT INTO tab_proclog_nso(log_root_id,log_sub_id,hour,transaction_id,instance,oper_id,status,hostname,username,starttime,responsetime,responsecode,fulloperation,fullresult) VALUES('g00000000000000000000169810CAI','/2',10,'321','a=2',7,'Success','ema1349','sogadm','2009-04-01 10:23:16',63,'0','<?xml version=\'1.0\' encoding=\'ISO-8859-1\' standalone=\'no\'?><ParamList><operation>Create</operation><mOType>AdditionalMSISDN@http://schemas.ericsson.com/pg/hlr/13.5/</mOType><mOId><value>&lt;msisdn>12345678&lt;/msisdn></value></mOId><mOAttributes>&lt;CreateAdditionalMSISDN xmlns="http://sche
Trx read view will not see trx with id >= 0 10291, sees < 0 10217
///////more tx info deleted here///////
--------
FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (write thread)
Pending normal aio reads: 0, aio writes: 0,
ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
Pending flushes (fsync) log: 0; buffer pool: 2
10209 OS file reads, 6937 OS file writes, 2811 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 8.60 writes/s, 3.20 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 783, seg size 785,
149569 inserts, 149569 merged recs, 5216 merges
Hash table size 17700857, node heap has 1619 buffer(s)
1339.33 hash searches/s, 6026.79 non-hash searches/s
---
LOG
---
Log sequence number 6 1466141081
Log flushed up to 6 1462063279
Last checkpoint at 5 3388759352
0 pending log writes, 0 pending chkp writes
1024 log i/o's done, 1.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total memory allocated 9612166728; in additional pool allocated 13857792
Dictionary memory allocated 54880
Buffer pool size 524288
Free buffers 332673
Database pages 189996
Modified db pages 122656
Pending reads 0
Pending writes: LRU 0, flush list 1, single page 0
Pages read 10741, created 179255, written 65402
0.00 reads/s, 314.14 creates/s, 76.78 writes/s
Buffer pool hit rate 1000 / 1000
--------------
ROW OPERATIONS
--------------
16 queries inside InnoDB, 45 queries in queue
65 read views open inside InnoDB
Main thread process no. 18387, id 1140881728, state: sleeping
Number of rows inserted 1996126, updated 0, deleted 0, read 432
3249.95 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================

1 row in set, 1 warning (0.00 sec)


mysql> show variables like '%inno%';
+---------------------------------+--------------------------+
| Variable_name | Value |
+---------------------------------+--------------------------+
| have_innodb | YES |
| innodb_adaptive_hash_index | ON |
| innodb_additional_mem_pool_size | 33554432 |
| innodb_autoextend_increment | 1000 |
| innodb_autoinc_lock_mode | 2 |
| innodb_buffer_pool_size | 8589934592 |
| innodb_checksums | ON |
| innodb_commit_concurrency | 0 |
| innodb_concurrency_tickets | 500 |
| innodb_data_file_path | idbdata1:200M:autoextend |
| innodb_data_home_dir | |
| innodb_doublewrite | OFF |
| innodb_fast_shutdown | 1 |
| innodb_file_io_threads | 16 |
| innodb_file_per_table | ON |
| innodb_flush_log_at_trx_commit | 2 |
| innodb_flush_method | O_DIRECT |
| innodb_force_recovery | 0 |
| innodb_lock_wait_timeout | 50 |
| innodb_locks_unsafe_for_binlog | OFF |
| innodb_log_buffer_size | 134217728 |
| innodb_log_file_size | 1572864000 |
| 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 | 1000 |
| innodb_rollback_on_timeout | OFF |
| innodb_support_xa | ON |
| innodb_sync_spin_loops | 20 |
| innodb_table_locks | OFF |
| innodb_thread_concurrency | 16 |
| innodb_thread_sleep_delay | 10000 |
+---------------------------------+--------------------------+
34 rows in set (0.00 sec)


/Song

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Re: Need help to improve innodb performance
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April 02, 2009 01:22AM


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