的一些信息，可以用语句：“Show profile *** for query 3”来获取
另外附上profiling 的学习质料
profiling 基础
http://www.xaprb.com/blog/2006/10/12/how-to-profile-a-query-in-mysql/
http://www.xaprb.com/blog/2006/10/15/a-case-study-in-profiling-queries-in-mysql/
http://www.xaprb.com/blog/2006/10/17/mysql-profiling-case-study-part-2/
profiling 进阶
http://www.mysqlperformanceblog.com/2009/01/19/profiling-mysql-stored-routines/
http://www.mysqlperformanceblog.com/2008/05/18/wanted-better-memory-profiling-for-mysql/
maatkit–perldoc mk-query-profiler
profiling高级
http://dev.mysql.com/tech-resources/articles/pro-mysql-ch6.
html
http://dev.
mysql.com/tech-resources/articles/using-new-query-profiler.html
profiling骨灰级
http://www.scribd.com/doc/2669413/DTrace-and-MySQL-Presentation
http://forge.mysql.com/wiki/Using_DTrace_with_MySQL
http://wikis.sun.com/display/BluePrints/Optimizing+MySQL+Database+Application+Performan
摘自 性能测试专栏
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