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           shell> mysqldumpslow [options] [log_file ...]
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26       Example of usage:
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28           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
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37       mysqldumpslow supports the following options.
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39       ·   --help Display a help message and exit.
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41       ·   -a
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43           Do not abstract all numbers to N and strings to 'S'.
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45       ·   --debug, -d Run in debug mode.
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47           This option is available only if MySQL was built using WITH_DEBUG.
48           MySQL release binaries provided by Oracle are not built using this
49           option.
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51       ·   -g pattern
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53           Consider only queries that match the (grep-style) pattern.
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55       ·   -h host_name
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57           Host name of MySQL server for *-slow.log file name. The value can
58           contain a wildcard. The default is * (match all).
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60       ·   -i name
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62           Name of server instance (if using mysql.server startup script).
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64       ·   -l
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66           Do not subtract lock time from total time.
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68       ·   -n N
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70           Abstract numbers with at least N digits within names.
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72       ·   -r
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74           Reverse the sort order.
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76       ·   -s sort_type
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78           How to sort the output. The value of sort_type should be chosen
79           from the following list:
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81           ·   t, at: Sort by query time or average query time
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83           ·   l, al: Sort by lock time or average lock time
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85           ·   r, ar: Sort by rows sent or average rows sent
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87           ·   c: Sort by count
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89           By default, mysqldumpslow sorts by average query time (equivalent
90           to -s at).
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92       ·   -t N
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94           Display only the first N queries in the output.
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96       ·   --verbose, -v Verbose mode. Print more information about what the
97           program does.
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100       Copyright © 1997, 2020, Oracle and/or its affiliates.
101
102       This documentation is free software; you can redistribute it and/or
103       modify it only under the terms of the GNU General Public License as
104       published by the Free Software Foundation; version 2 of the License.
105
106       This documentation is distributed in the hope that it will be useful,
107       but WITHOUT ANY WARRANTY; without even the implied warranty of
108       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
109       General Public License for more details.
110
111       You should have received a copy of the GNU General Public License along
112       with the program; if not, write to the Free Software Foundation, Inc.,
113       51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see
114       http://www.gnu.org/licenses/.
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116

SEE ALSO

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

123       Oracle Corporation (http://dev.mysql.com/).
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127MySQL 8.0                         11/26/2020                  MYSQLDUMPSLOW(1)
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