mysql檢測工具tuning-primer.sh

tuning-primer.sh幫助我們去檢視一下mysql執行情況,產生報告,給出一些最佳化建議；

下載及使用：
1.wget
2.將tuning-primer.sh複製到my.cnf同級目錄
3.chmod +x tuning-primer.sh 執行：sh tuning-primer.sh

報告如下：
root@dbhostname:/opt/mysq/data> sh tuning-primer.sh all

Using login values from ~/.my.cnf
- INITIAL LOGIN ATTEMPT FAILED -
Testing for stored webmin passwords:
None Found
Could not auto detect login info!
Found potential sockets: /data/mysql/mysql.sock
/opt/mysql/data/mysql3307.sock
Using: /var/lib/mysql/mysql.sock
Would you like to provide a different socket?: [y/N] y   //指定mysql自己的socket目錄
Socket: /opt/mysql/data/mysql3307.sock
Do you have your login handy ? [y/N] : y //輸入username/passwd
User: root
Password: 123456

Would you like me to create a ~/.my.cnf file for you? [y/N] : n    //不要再建立my.cnf 檔案

        -- MYSQL PERFORMANCE TUNING PRIMER --
             - By: Matthew Montgomery -

MySQL Version 5.1.48-mysql5148-log x86_64

Uptime = 14 days 5 hrs 41 min 11 sec
Avg. qps = 0
Total Questions = 279
Threads Connected = 2

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
for info about MySQL's Enterprise Monitoring and Advisory Service

SLOW QUERIES
The slow query log is NOT enabled.
Current long_query_time = 1.000000 sec.
You have 0 out of 300 that take longer than 1.000000 sec. to complete
Your long_query_time seems to be fine

BINARY UPDATE LOG
The binary update log is enabled

WORKER THREADS
Current thread_cache_size = 0
Current threads_cached = 0
Current threads_per_sec = 1
Historic threads_per_sec = 0
Your thread_cache_size is fine

MAX CONNECTIONS
Current max_connections = 151
Current threads_connected = 2
Historic max_used_connections = 2
The number of used connections is 1% of the configured maximum.
You are using less than 10% of your configured max_connections.
Lowering max_connections could help to avoid an over-allocation of memory
See "MEMORY USAGE" section to make sure you are not over-allocating

INNODB STATUS
Current InnoDB index space = 52 M
Current InnoDB data space = 58 M
Current InnoDB buffer pool free = 77 %
Current innodb_buffer_pool_size = 16 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 : 45 M
Configured Max Per-thread Buffers : 250 M
Configured Max Global Buffers : 42 M
Configured Max Memory Limit : 292 M
Physical Memory : 7.79 G
Max memory limit seem to be within acceptable norms

KEY BUFFER
Current MyISAM index space = 338 K
Current key_buffer_size = 16 M
Key cache miss rate is 1 : 2
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 = 512 K
Current read_rnd_buffer_size = 512 K
Sort buffer seems to be fine

JOINS
Current join_buffer_size = 132.00 K
You have had 0 queries where a join could not use an index properly
Your joins seem to be using indexes properly

OPEN FILES LIMIT
Current open_files_limit = 100001 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 = 64 tables
Current table_definition_cache = 256 tables
You have a total of 90 tables
You have 64 open tables.
Current table_cache hit rate is 3%
, while 100% of your table cache is in use
You should probably increase your table_cache

TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 16 M
Of 2310 temp tables, 9% were created on disk
Created disk tmp tables ratio seems fine

TABLE SCANS
Current read_buffer_size = 256 K
Current table scan ratio = 5 : 1
read_buffer_size seems to be fine

TABLE LOCKING
Current Lock Wait ratio = 0 : 558
Your table locking seems to be fine

zz:作者:海底蒼鷹
地址:http://blog.51yip.com/mysql/1224.html

mysql檢測工具tuning-primer.sh

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