Mysql mysqlsla在Linux之下的正确操作
以下的文章主要描述的是如何在Linux下对Mysql mysqlsla进行正常的分析,我们是以相关代码的方式来引出Linux下Mysql mysqlsla的正确操作,以下就是文章的具体内容的介绍,望你浏览之后对其有更深的了解。 tarzxvfmysqlsla-2.03.tar.gz cpmysqlsla-2.03/bin/my
以下的文章主要描述的是如何在Linux下对Mysql mysqlsla进行正常的分析,我们是以相关代码的方式来引出Linux下Mysql mysqlsla的正确操作,以下就是文章的具体内容的介绍,望你浏览之后对其有更深的了解。
<ol class="dp-xml"> <li class="alt"><span><span>tar zxvf mysqlsla-2.03.tar.gz </span></span></li> <li><span>cp mysqlsla-2.03/bin/mysqlsla /usr/local/bin </span></li> </ol>
如果提示“Can’t locate DBI.pm”,执行以下命令
<ol class="dp-xml"><li class="alt"><span><span>yum install perl-DBI perl-DBD-MySQL -y </span></span></li></ol>
这时就可以使用mysqlsla了,用法如下
<ol class="dp-xml"> <li class="alt"><span><span>mysqlsla -lt slow slow.log </span></span></li> <li><span>mysqlsla </span></li> </ol>
Mysql mysqlsla:整体来说, 功能非常强大. 数据报表,非常有利于分析慢查询的原因, 包括执行频率, 数据量, 查询消耗等.
格式说明如下:
总查询次数 (queries total), 去重后的sql数量 (unique)
输出报表的内容排序(sorted by)
最重大的慢sql统计信息, 包括 平均执行时间, 等待锁时间, 结果行的总数, 扫描的行总数.
Count, sql的执行次数及占总的slow log数量的百分比.
Time, 执行时间, 包括总时间, 平均时间, 最小, 最大时间, 时间占到总慢sql时间的百分比.
95% of Time, 去除最快和最慢的sql, 覆盖率占95%的sql的执行时间.
Lock Time, 等待锁的时间.
95% of Lock , 95%的慢sql等待锁时间.
Rows sent, 结果行统计数量, 包括平均, 最小, 最大数量.
Rows examined, 扫描的行数量.
Database, 属于哪个数据库
Users, 哪个用户,IP, 占到所有用户执行的sql百分比
Query abstract, 抽象后的sql语句
Query sample, sql语句
上述的相关内容就是对Linux下分析Mysql mysqlsla的描述,希望会给你带来一些帮助在此方面。

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