พอดีไปเจอลิงค์จาก howtoforge นำมาฝากกันนะครับ
http://www.howtoforge.com/tuning-mysql-performance-with-mysqltunerผมลองเล่นดูเล็กน้อย บนเครื่องทำงานของผมเองก็ได้ผลตามด้านล่าง
root@sothorn:~# wget
http://mysqltuner.com/mysqltuner.pl--09:07:39--
http://mysqltuner.com/mysqltuner.pl => `mysqltuner.pl'
Connecting to 192.168.2.254:8080... connected.
Proxy request sent, awaiting response... 200 OK
Length: 36,740 (36K) [text/plain]
100%[====================================>] 36,740 --.--K/s
09:07:42 (2.98 MB/s) - `mysqltuner.pl' saved [36740/36740]
root@sothorn:~# chmod +x mysqltuner.pl
root@sothorn:~# ./mysqltuner.pl
>> MySQLTuner 0.9.8 - Major Hayden <major@mhtx.net>
>> Bug reports, feature requests, and downloads at
http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering
Please enter your MySQL administrative login: root
Please enter your MySQL administrative password:
-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.0.51a-3ubuntu5.1
[OK] Operating on 64-bit architecture
-------- Storage Engine Statistics -------------------------------------------
[--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 84K (Tables: 44)
[!!] InnoDB is enabled but isn't being used
[!!] Total fragmented tables: 2
-------- Performance Metrics -------------------------------------------------
[--] Up for: 2h 1m 30s (90 q [0.012 qps], 12 conn, TX: 30K, RX: 3K)
[--] Reads / Writes: 100% / 0%
[--] Total buffers: 2.6M per thread and 58.0M global
[OK] Maximum possible memory usage: 320.5M (15% of installed RAM)
[OK] Slow queries: 0% (0/90)
[OK] Highest usage of available connections: 1% (1/100)
[OK] Key buffer size / total MyISAM indexes: 16.0M/183.0K
[!!] Query cache efficiency: 0.0%
[OK] Query cache prunes per day: 0
[OK] Temporary tables created on disk: 0%
[OK] Thread cache hit rate: 91%
[OK] Table cache hit rate: 91%
[OK] Open file limit used: 11%
[OK] Table locks acquired immediately: 100%
[!!] Connections aborted: 8%
อันนี้เป็นคำแนะนำ ไม่รู้ว่าเชื่อได้ทั้งหมดหรือเปล่า
-------- Recommendations -----------------------------------------------------
General recommendations:
Add skip-innodb to MySQL configuration to disable InnoDB
Run OPTIMIZE TABLE to defragment tables for better performance
MySQL started within last 24 hours - recommendations may be inaccurate
Enable the slow query log to troubleshoot bad queries
Your applications are not closing MySQL connections properly
Variables to adjust:
query_cache_limit (> 1M, or use smaller result sets)
root@sothorn:~#
หัวข้อ: MySQLTuner (อ่าน 5381 ครั้ง)