下载地址:https://launchpad.net/mysql-tuning-primer
将tuning-primer.sh 放在mysql所在的server,
若出现如下错误
[root@hbase1 ~]# sh tuning-primer.sh all
which: no bc in (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/jdk1.6.0_31/bin:/usr/local/apache-ant-1.8.3/bin:/root/bin)
Error: Command line calculator 'bc' not found!
请安装bc,
[root@hbase1 ~]# yum install bc
再次运行，生成报告:
-- MYSQL PERFORMANCE TUNING PRIMER --
- By: Matthew Montgomery -
MySQL Version 5.1.67 x86_64
Uptime = 55 days 22 hrs 20 min 50 sec
Avg. qps = 48
Total Questions = 234566845
Threads Connected = 205
Server has been running for over 48hrs.
It should be safe to follow these recommendations
To find out more information on how each of these
runtime variables effects performance visit:
http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html
Visit http://www.mysql.com/products/enterprise/advisors.html
for info about MySQL's Enterprise Monitoring and Advisory Service
SLOW QUERIES
The slow query log is NOT enabled.
Current long_query_time = 10.000000 sec.
You have 1345 out of 234566882 that take longer than 10.000000 sec. to complete
Your long_query_time seems to be fine
BINARY UPDATE LOG
The binary update log is NOT enabled.
You will not be able to do point in time recovery
See http://dev.mysql.com/doc/refman/5.1/en/point-in-time-recovery.html
WORKER THREADS
Current thread_cache_size = 8
Current threads_cached = 5
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine
MAX CONNECTIONS
Current max_connections = 1000
Current threads_connected = 205
Historic max_used_connections = 410
The number of used connections is 41% of the configured maximum.
Your max_connections variable seems to be fine.
INNODB STATUS
Current InnoDB index space = 3.64 G
Current InnoDB data space = 17.16 G
Current InnoDB buffer pool free = 0 %
Current innodb_buffer_pool_size = 8 M
Depending on how much space your innodb indexes take up it may be safe
to increase this value to up to 2 / 3 of total system memory
MEMORY USAGE
Max Memory Ever Allocated : 1.11 G
Configured Max Per-thread Buffers : 2.68 G
Configured Max Global Buffers : 17 M
Configured Max Memory Limit : 2.70 G
Physical Memory : 7.67 G
Max memory limit seem to be within acceptable norms
KEY BUFFER
Current MyISAM index space = 1.28 G
Current key_buffer_size = 7 M
Key cache miss rate is 1 : 814
Key buffer free ratio = 81 %
Your key_buffer_size seems to be fine
QUERY CACHE
Query cache is supported but not enabled
Perhaps you should set the query_cache_size
SORT OPERATIONS
Current sort_buffer_size = 2 M
Current read_rnd_buffer_size = 256 K
Sort buffer seems to be fine
JOINS
Current join_buffer_size = 132.00 K
You have had 62754 queries where a join could not use an index properly
You should enable "log-queries-not-using-indexes"
Then look for non indexed joins in the slow query log.
If you are unable to optimize your queries you may want to increase your
join_buffer_size to accommodate larger joins in one pass.
Note! This script will still suggest raising the join_buffer_size when
ANY joins not using indexes are found.
OPEN FILES LIMIT
Current open_files_limit = 65535 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
Your open_files_limit value seems to be fine
TABLE CACHE
Current table_open_cache = 1024 tables
Current table_definition_cache = 256 tables
You have a total of 6130 tables
You have 1024 open tables.
Current table_cache hit rate is 0%
, while 100% of your table cache is in use
You should probably increase your table_cache
You should probably increase your table_definition_cache value.
TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 16 M
Of 12719708 temp tables, 1% were created on disk
Created disk tmp tables ratio seems fine
TABLE SCANS
Current read_buffer_size = 128 K
Current table scan ratio = 836 : 1
read_buffer_size seems to be fine
TABLE LOCKING
Current Lock Wait ratio = 1 : 1605886
Your table locking seems to be fine
根据上面提到的指标慢慢优化。
