mysqlsla的安装与使用

介绍：
一款帮助语句分析、过滤、分析和排序MySQL慢日志、查询日志、二进制日志和microslow patched日志的分析工具。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。

1.下载 mysqlsla

[root@localhost tmp]# wget http://hackmysql.com/scripts/mysqlsla-2.03.tar.gz
--19:45:45--  http://hackmysql.com/scripts/mysqlsla-2.03.tar.gz
Resolving hackmysql.com... 64.13.232.157

Connecting to hackmysql.com|64.13.232.157|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 33674 (33K) [application/x-tar]

Saving to: `mysqlsla-2.03.tar.gz.2'

100%[===========================================================================================>] 33,674      50.2K/s   in 0.7s   

19:45:47 (50.2 KB/s) - `mysqlsla-2.03.tar.gz.2' saved [33674/33674]

2.解压

[root@localhost tmp]# tar -zxvf mysqlsla-2.03.tar.gz

mysqlsla-2.03/

mysqlsla-2.03/Changes

mysqlsla-2.03/INSTALL

mysqlsla-2.03/README

mysqlsla-2.03/Makefile.PL

mysqlsla-2.03/bin/

mysqlsla-2.03/bin/mysqlsla

mysqlsla-2.03/META.yml

mysqlsla-2.03/lib/

mysqlsla-2.03/lib/mysqlsla.pm

mysqlsla-2.03/MANIFEST

[root@localhost tmp]# cd mysqlsla-2.03

[root@localhost mysqlsla-2.03]# ls

bin  Changes  INSTALL  lib  Makefile.PL  MANIFEST  META.yml  README

3.执行perl脚本检查包依赖关系

[root@localhost mysqlsla-2.03]# perl Makefile.PL

Checking if your kit is complete...

Looks good

Writing Makefile for mysqlsla

 

@如果依赖检查报错：

[root@localhost mysqlsla-2.03]# perl Makefile.PL

Can't locate ExtUtils/MakeMaker.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at Makefile.PL
line 2.

BEGIN failed--compilation aborted at Makefile.PL line 2.

 

解决方法如下：

yum -y install perl-devel

yum -y install perl-CPAN

 

 

4.安装

[root@localhost mysqlsla-2.03]# make && make install;

cp lib/mysqlsla.pm blib/lib/mysqlsla.pm

cp bin/mysqlsla blib/script/mysqlsla

/usr/bin/perl "-MExtUtils::MY" -e "MY->fixin(shift)" blib/script/mysqlsla

Manifying blib/man3/mysqlsla.3pm

Installing /usr/lib/perl5/site_perl/5.8.8/mysqlsla.pm

Installing /usr/share/man/man3/mysqlsla.3pm

Installing /usr/bin/mysqlsla

Writing /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi/auto/mysqlsla/.packlist

Appending installation info to /usr/lib/perl5/5.8.8/i386-linux-thread-multi/perllocal.pod

[root@localhost mysqlsla-2.03]#

5.简单使用

语法：

 Slow log: mysqlsla -lt slow slow.log

 General log: mysqlsla -lt general general.log

 Binary log: mysqlbinlog bin.log | mysqlsla -lt binary -

这里以slow log为例：

[root@localhost mysqlsla-2.03]# mysqlsla -lt slow /tmp/127_slow.log | more

Report for slow logs: /tmp/127_slow.log

24 queries total, 6 unique

Sorted by 't_sum'

Grand Totals: Time 16 s, Lock 1 s, Rows sent 18, Rows Examined 2.10M

______________________________________________________________________ 001 ___

Count         : 18  (75.00%)

Time          : 15 s total, 833.333 ms avg, 0 to 8 s max  (93.75%)

  95% of Time : 7 s total, 411.765 ms avg, 0 to 4 s max

Lock Time (s) : 0 total, 0 avg, 0 to 0 max  (0.00%)

  95% of Lock : 0 total, 0 avg, 0 to 0 max

Rows sent     : 0 avg, 0 to 0 max  (0.00%)

Rows examined : 116.51k avg, 8 to 1.05M max  (99.99%)

Database      :

Users         :

        root@localhost  : 100.00% (18) of query, 100.00% (24) of all users

Query abstract:

INSERT INTO t2 SELECT * FROM t2;

Query sample:

insert into t2 select * from t2;

........

选项说明：

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

mysqlsla常用参数说明：

1) -log-type (-lt) type logs:

通过这个参数来制定log的类型，主要有slow, general, binary, msl, udl,分析slow log时通过制定为slow.

2) -sort:

制定使用什么参数来对分析结果进行排序，默认是按照t_sum来进行排序。

t_sum:按总时间排序

c_sum:按总次数排序

c_sum_p: sql语句执行次数占总执行次数的百分比。

3) -top:

显示sql的数量，默认是10,表示按规则取排序的前多少条

4) –statement-filter (-sf) [+-][TYPE]:

过滤sql语句的类型，比如select、update、drop.

[TYPE]有SELECT, CREATE, DROP, UPDATE, INSERT，例如"+SELECT,INSERT"，不出现的默认是-，即不包括。

5) db：要处理哪个库的日志：

例如，只取backup库的select语句、按c_sum_p排序的前2条记录

[root@localhost mysqlsla-2.03]# mysqlsla -lt slow -sort c_sum_p  -sf  "+select" -db backup -top 2  /tmp/127_slow.log

Report for slow logs: /tmp/127_slow.log

4 queries total, 3 unique

Sorted by 'c_sum_p'

Grand Totals: Time 1 s, Lock 1 s, Rows sent 18, Rows Examined 195

______________________________________________________________________ 001 ___

Count         : 2  (50.00%)

Time          : 0 total, 0 avg, 0 to 0 max  (0.00%)

Lock Time (s) : 0 total, 0 avg, 0 to 0 max  (0.00%)

Rows sent     : 1 avg, 1 to 1 max  (11.11%)

Rows examined : 86 avg, 77 to 94 max  (87.69%)

Database      :

Users         :

        root@localhost  : 100.00% (2) of query, 100.00% (4) of all users

Query abstract:

SELECT SUM(format(duration,N)) AS duration FROM information_schema.profiling WHERE query_id=N;

Query sample:

select sum(format(duration,6)) as duration from information_schema.profiling where query_id=7;

______________________________________________________________________ 002 ___

Count         : 1  (25.00%)

Time          : 1 s total, 1 s avg, 1 s to 1 s max  (100.00%)

Lock Time (s) : 1 s total, 1 s avg, 1 s to 1 s max  (100.00%)

Rows sent     : 4 avg, 4 to 4 max  (22.22%)

Rows examined : 12 avg, 12 to 12 max  (6.15%)

Database      :

Users         :

        root@localhost  : 100.00% (1) of query, 100.00% (4) of all users

Query abstract:

SELECT * FROM tt WHERE a=N;

Query sample:

select * from tt where a=2;