time：2012/02/17
mysqlsla的安装与使用
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
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
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 abstra