MySQL 和 InnoDB 性能
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MySQL 和 InnoDB 性能 http://www.ossez.com/forum.php?mod=viewthread&tid=26844&fromuid=426 (出处: OSSEZ)
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This document discusses Oracle's strategy with MySQL, which is to provide a complete, open, and integrated solution. Key points include:
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- Oracle has invested in open source projects like MySQL and Linux to expand developer communities and speed innovation.
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My sql università di enna a.a. 2005-06
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MySQL 和 InnoDB 性能
- 1. MySQL and InnoDB Performance Baron Schwartz | OSDC 2010
- 2. MySQL Architecture MySQL Server Storage Engines Parser, Optimizer Executor, Caches
- 3. InnoDB Storage Engine • Transactional, ACID compliant • Reliable, Stable • Complex, Flexible • A History of Poor Scalability
- 4. Thinking About Performance Response Time Is Everything
- 5. Response Time R = W + S Utilization ResponseTime S W
- 6. Response Time R = W + S Utilization ResponseTime S W
- 7. MySQL & InnoDB In Context
- 8. MySQL & InnoDB In Context Operating Environment MySQL Server InnoDB
- 10. Operating Environment RAM CPU I/O Network • Fast • Up to 24 Cores • Up to 100's of GB • RAID + BBU • Fast SAS Disks • SSD / FusionIO • XFS Filesystem • Deadline Scheduler • High Bandwidth • Low Latency
- 11. MySQL Performance Nested-Loop Joins and Subqueries
- 13. InnoDB's Single “Main Thread” • Too Much Work! Purging, Flushing • Main Thread Cannot Keep Up
- 14. Special-Purpose Threads • Main Thread • Purge Thread • Multiple Read/Write IO Threads
- 15. InnoDB Mutex Contention Buffer Pool
- 16. Splitting the Buffer Pool Mutex Buffer Pool Flush List LRU Hash Free
- 17. Current InnoDB Bottlenecks • Adaptive Hash Search Mutex • Index Lock Mutex • After These Are Solved, ???
- 18. How To Improve Performance
- 19. Measure Carefully Proper diagnosis is 95% of the work
- 20. Use Good Tools • New Relic • MySQL Enterprise Monitor • Cacti – http://code.google.com/p/mysql-cacti-templates/ • Maatkit • GDB, strace, oprofile
- 21. Instrumentation is Key • The best performance data is INSIDE MySQL
- 22. Percona Server with XtraDB MySQL Server Storage Engines Parser, Optimizer Executor, Caches Tunability Instrumentation Diagnostics
- 24. InnoDB -vs- XtraDB http://tinyurl.com/xtradb-fusionio-jan-2010 XtraDB is much better than InnoDB in MySQL 5.1.
- 25. MySQL 5.5 -vs- Percona Server http://tinyurl.com/xtradb-mysql5-5-ap2010 High performance is no use without stability.
- 26. Other Technologies • Cloud Computing – 2 of the 4 critical resources are uncontrollable • “NoSQL” Databases – It's too soon to be sure
- 27. Summary • The operating environment is important • MySQL & InnoDB are getting much faster • The cloud is not a performance solution • You are the key to better performance
- 28. Where Do You Go Next? • Become a performance practitioner – Read High Performance MySQL 2nd Edition – Read Optimizing Oracle Performance – Read The Art Of Capacity Planning – Read http://www.percona.com/about-us/white-papers/ • Contribute! – Sponsor features you need or want – Help improve tools