Slow log analysis tool mysqldumpslow

MySQL provides a slow log analysis tool mysqldumpslow

View mysqldumpslow help

mysqldumpslow  --help

1 [root@localhost~]# mysqldumpslow --help
 2 Usage: mysqldumpslow [ OPTS... ] [ LOGS... ]
 3 
 4 Parse and summarize the MySQL slow query log. Options are
 5 
 6   --verbose    verbose
 7   --debug      debug
 8   --help       write this text to standard output
 9 
10   -v           verbose
11   -d           debug
12   -s ORDER     what to sort by (al, at, ar, c, l, r, t), 'at' is default
13                 al: average lock time
14                 ar: average rows sent
15                 at: average query time
16                  c: count
17                  l: lock time
18                  r: rows sent
19                  t: query time  
20   -r           reverse the sort order (largest last instead of first)
21   -t NUM       just show the top n queries
22   -a           don't abstract all numbers to N and strings to 'S'
23   -n NUM       abstract numbers with at least n digits within names
24   -g PATTERN   grep: only consider stmts that include this string
25   -h HOSTNAME  hostname of db server for *-slow.log filename (can be wildcard),
26                default is '*', i.e. match all
27   -i NAME      name of server instance (if using mysql.server startup script)
28   -l           don't subtract lock time from total time

 

. 1 - S, which is a sorted manner
 2  
. 3      C: access count
 . 4  
. 5   
. 6  
. 7      L: lock time
 . 8  
. 9   
10  
. 11      R & lt: Returns the record
 12 is  
13 is   
14  
15      T: Time Query
 16  
. 17   
18 is  
. 19      Al: Average locking time
 20 is  
21 is   
22 is  
23 is      Ar: the average number of records returned
 24  
25   
26 is  
27      AT: average query time
 28  
29   
30  
31 is - T, is the top n meaning, that is how many of the return to the previous data;
 32  
33 is - G, can be written behind a regular pattern matching, case-insensitive;
 34 is  
35  
36  
37 [  example:
 38 is  
39  to give up the return record set 10 SQL.
40  
41 is the mysqldumpslow -SR 10 -t / Database / MySQL / mysql06_slow.log
 42 is  
43 is   
44 is  
45  to give the most accessed 10 the SQL
 46 is  
47 the mysqldumpslow -SC 10 -t / Database / MySQL / mysql06_slow.log
 48  
49   
50  
51 is  obtained according to 10 before which time sorting containing query left connected.
52  
53 mysqldumpslow -st -g -t 10 "left the Join" / Database / MySQL / mysql06_slow.log
 54  
55   
56  
57 In addition the proposed combination when using these commands | and more, otherwise there may be cases scraper appear.
58  
59 mysqldumpslow -s r -t 20 /mysqldata/mysql/mysql06-slow.log | more

 Reference Links: https://blog.csdn.net/zlb_lover/article/details/81284267