1MYSQLDUMPSLOW(1)             MySQL Database System            MYSQLDUMPSLOW(1)
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NAME

6       mysqldumpslow - Summarize slow query log files
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SYNOPSIS

9       mysqldumpslow [options] [log_file ...]
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DESCRIPTION

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.
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17       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.
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22       Invoke mysqldumpslow like this:
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24           mysqldumpslow [options] [log_file ...]
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26       Example output with no options given:
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28           Reading mysql slow query log from /usr/local/mysql/data/mysqld80-slow.log
29           Count: 1  Time=4.32s (4s)  Lock=0.00s (0s)  Rows=0.0 (0), root[root]@localhost
30            insert into t2 select * from t1
31           Count: 3  Time=2.53s (7s)  Lock=0.00s (0s)  Rows=0.0 (0), root[root]@localhost
32            insert into t2 select * from t1 limit N
33           Count: 3  Time=2.13s (6s)  Lock=0.00s (0s)  Rows=0.0 (0), root[root]@localhost
34            insert into t1 select * from t1
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36       mysqldumpslow supports the following options.
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38       •   --help Display a help message and exit.
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40       •   -a
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42           Do not abstract all numbers to N and strings to 'S'.
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44       •   --debug, -d Run in debug mode.
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46           This option is available only if MySQL was built using WITH_DEBUG.
47           MySQL release binaries provided by Oracle are not built using this
48           option.
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50       •   -g pattern
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52           Consider only queries that match the (grep-style) pattern.
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54       •   -h host_name
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56           Host name of MySQL server for *-slow.log file name. The value can
57           contain a wildcard. The default is * (match all).
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59       •   -i name
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61           Name of server instance (if using mysql.server startup script).
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63       •   -l
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65           Do not subtract lock time from total time.
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67       •   -n N
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69           Abstract numbers with at least N digits within names.
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71       •   -r
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73           Reverse the sort order.
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75       •   -s sort_type
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77           How to sort the output. The value of sort_type should be chosen
78           from the following list:
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80           •   t, at: Sort by query time or average query time
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82           •   l, al: Sort by lock time or average lock time
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84           •   r, ar: Sort by rows sent or average rows sent
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86           •   c: Sort by count
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88           By default, mysqldumpslow sorts by average query time (equivalent
89           to -s at).
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91       •   -t N
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93           Display only the first N queries in the output.
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95       •   --verbose, -v Verbose mode. Print more information about what the
96           program does.
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99       Copyright © 1997, 2021, Oracle and/or its affiliates.
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101       This documentation is free software; you can redistribute it and/or
102       modify it only under the terms of the GNU General Public License as
103       published by the Free Software Foundation; version 2 of the License.
104
105       This documentation is distributed in the hope that it will be useful,
106       but WITHOUT ANY WARRANTY; without even the implied warranty of
107       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
108       General Public License for more details.
109
110       You should have received a copy of the GNU General Public License along
111       with the program; if not, write to the Free Software Foundation, Inc.,
112       51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see
113       http://www.gnu.org/licenses/.
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SEE ALSO

117       For more information, please refer to the MySQL Reference Manual, which
118       may already be installed locally and which is also available online at
119       http://dev.mysql.com/doc/.
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AUTHOR

122       Oracle Corporation (http://dev.mysql.com/).
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126MySQL 8.0                         11/26/2021                  MYSQLDUMPSLOW(1)
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