mysqldumpslow

目录：

• 工具介绍
• 用法
• help

工具介绍

mysqldumpsql 安装 mysql 自带工具，用于分析 slow sql日志文件。

用法

# 按照 count 从大到小排序 前 5 条
mysqldumpslow -s r -t 5 /var/log/mysql/slow.sql

# 按照 count 从小到大排序 前 5 条、
mysqldumpslow -r -s r -t 5 /var/log/mysql/slow.sql

Help

➜  ~ mysqldumpslow -h
Option h requires an argument
ERROR: bad option

Usage: mysqldumpslow [ OPTS... ] [ LOGS... ]

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
                al: average lock time
                ar: average rows sent
                at: average query time
                 c: count
                 l: lock time
                 r: rows sent
                 t: query time
  -r           reverse the sort order (largest last instead of first)
  -t NUM       just show the top n queries
  -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
  -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