转载： http://blog.csdn.net/seteor/article/details/24017913
4.用法示例
(1)直接分析慢查询文件:
pt-query-digest slow.log > slow_report.log
(2)分析最近12小时内的查询：
pt-query-digest –since=12h slow.log > slow_report2.log
(3)分析指定时间范围内的查询：
pt-query-digest slow.log –since ‘2014-04-17 09:30:00’ –until ‘2014-04-17 10:00:00’> > slow_report3.log
(4)分析指含有select语句的慢查询
pt-query-digest–filter ‘$event->{fingerprint} =~ m/^select/i’ slow.log> slow_report4.log
(5) 针对某个用户的慢查询
pt-query-digest–filter ‘($event->{user} || “”) =~ m/^root/i’ slow.log> slow_report5.log
(6) 查询所有所有的全表扫描或full join的慢查询
pt-query-digest–filter ‘(($event->{Full_scan} || “”) eq “yes”) ||(($event->{Full_join} || “”) eq “yes”)’ slow.log> slow_report6.log
(7)把查询保存到query_review表
pt-query-digest –user=root –password=abc123 –review h=localhost,D=test,t=query_review–create-review-table slow.log
(8)把查询保存到query_history表
pt-query-digest –user=root –password=abc123 –review h=localhost,D=test,t=query_ history–create-review-table slow.log_20140401
pt-query-digest –user=root –password=abc123–review h=localhost,D=test,t=query_history–create-review-table slow.log_20140402
(9)通过tcpdump抓取mysql的tcp协议数据，然后再分析
tcpdump -s 65535 -x -nn -q -tttt -i any -c 1000 port 3306 > mysql.tcp.txt
pt-query-digest –type tcpdump mysql.tcp.txt> slow_report9.log
(10)分析binlog
mysqlbinlog mysql-bin.000093 > mysql-bin000093.sql
pt-query-digest –type=binlog mysql-bin000093.sql > slow_report10.log
(11)分析general log
pt-query-digest –type=genlog localhost.log > slow_report11.log
