1MYSQLDUMPSLOW(1) MySQL Database System MYSQLDUMPSLOW(1)
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6 mysqldumpslow - Summarize slow query log files
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9 mysqldumpslow [options] [log_file ...]
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12 The MySQL slow query log contains information about queries that take a
13 long time to execute (see Section 5.4.5, “The Slow Query Log”).
14 mysqldumpslow parses MySQL slow query log files and summarizes their
15 contents.
16 Normally, mysqldumpslow groups queries that are similar except for the
18 particular values of number and string data values. It “abstracts”
19 these values to N and 'S' when displaying summary output. To modify
20 value abstracting behavior, use the -a and -n options.
21 Invoke mysqldumpslow like this:
23 shell> mysqldumpslow [options] [log_file ...]
25 Example of usage:
27 shell> mysqldumpslow
29 Reading mysql slow query log from /usr/local/mysql/data/mysqld80-slow.log
30 Count: 1 Time=4.32s (4s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
31 insert into t2 select * from t1
32 Count: 3 Time=2.53s (7s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
33 insert into t2 select * from t1 limit N
34 Count: 3 Time=2.13s (6s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
35 insert into t1 select * from t1
36 mysqldumpslow supports the following options.
38 · --help
40 Display a help message and exit.
42 · -a
44 Do not abstract all numbers to N and strings to 'S'.
46 · --debug, -d
48 Run in debug mode.
50 This option is available only if MySQL was built using WITH_DEBUG.
52 MySQL release binaries provided by Oracle are not built using this
53 option.
54 · -g pattern
56 Consider only queries that match the (grep-style) pattern.
58 · -h host_name
60 Host name of MySQL server for *-slow.log file name. The value can
62 contain a wildcard. The default is * (match all).
63 · -i name
65 Name of server instance (if using mysql.server startup script).
67 · -l
69 Do not subtract lock time from total time.
71 · -n N
73 Abstract numbers with at least N digits within names.
75 · -r
77 Reverse the sort order.
79 · -s sort_type
81 How to sort the output. The value of sort_type should be chosen
83 from the following list:
84 · t, at: Sort by query time or average query time
86 · l, al: Sort by lock time or average lock time
88 · r, ar: Sort by rows sent or average rows sent
90 · c: Sort by count
92 By default, mysqldumpslow sorts by average query time (equivalent
94 to -s at).
95 · -t N
97 Display only the first N queries in the output.
99 · --verbose, -v
101 Verbose mode. Print more information about what the program does.
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105 Copyright © 1997, 2020, Oracle and/or its affiliates. All rights
106 reserved.
107 This documentation is free software; you can redistribute it and/or
109 modify it only under the terms of the GNU General Public License as
110 published by the Free Software Foundation; version 2 of the License.
111 This documentation is distributed in the hope that it will be useful,
113 but WITHOUT ANY WARRANTY; without even the implied warranty of
114 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
115 General Public License for more details.
116 You should have received a copy of the GNU General Public License along
118 with the program; if not, write to the Free Software Foundation, Inc.,
119 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see
120 http://www.gnu.org/licenses/.
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124 For more information, please refer to the MySQL Reference Manual, which
125 may already be installed locally and which is also available online at
126 http://dev.mysql.com/doc/.
127
129 Oracle Corporation (http://dev.mysql.com/).
130MySQL 8.0 03/06/2020 MYSQLDUMPSLOW(1)