mysqldumpslow命令

mysqldumpslow --help显示如下

Parse and summarize the MySQL slow query log. Options are

--verbose verbose
--debug debug
--help write this text to standard output

-v verbose
-d debug
-s ORDER what to sort by (al, at, ar, c, l, r, t), 'at' is default  //排序
　　al: average lock time //平均锁定时间
　　ar: average rows sent //平均每次向客户端发送的行数
　　at: average query time //平均执行时间
　　c: count //执行次数
　　l: lock time //总共锁定时间
　　r: rows sent //总共发送的行数
　　t: query time //总共执行时间
-r reverse the sort order (largest last instead of first) //正序
-t NUM just show the top n queries //显示前多少个查询
-a don't abstract all numbers to N and strings to 'S' 
-n NUM abstract numbers with at least n digits within names 
-g PATTERN grep: only consider stmts that include this string //可以跟正则进行筛选
-h HOSTNAME hostname of db server for *-slow.log filename (can be wildcard),
default is '*', i.e. match all
-i NAME name of server instance (if using mysql.server startup script)
-l don't subtract lock time from total time