NAME

       mysqldumpslow - Summarize slow query log files

SYNOPSIS

       mysqldumpslow [options] [log_file ...]

DESCRIPTION

       The MySQL slow query log contains information about queries that take a long time to
       execute (see Section 5.4.5, “The Slow Query Log”).  mysqldumpslow parses MySQL slow query
       log files and summarizes their contents.

       Normally, mysqldumpslow groups queries that are similar except for the particular values
       of number and string data values. It “abstracts” these values to N and 'S' when displaying
       summary output. To modify value abstracting behavior, use the -a and -n options.

       Invoke mysqldumpslow like this:

           shell> mysqldumpslow [options] [log_file ...]

       Example of usage:

           shell> mysqldumpslow
           Reading mysql slow query log from /usr/local/mysql/data/mysqld57-slow.log
           Count: 1  Time=4.32s (4s)  Lock=0.00s (0s)  Rows=0.0 (0), root[root]@localhost
            insert into t2 select * from t1
           Count: 3  Time=2.53s (7s)  Lock=0.00s (0s)  Rows=0.0 (0), root[root]@localhost
            insert into t2 select * from t1 limit N
           Count: 3  Time=2.13s (6s)  Lock=0.00s (0s)  Rows=0.0 (0), root[root]@localhost
            insert into t1 select * from t1

       mysqldumpslow supports the following options.

       •   --help Display a help message and exit.

       •   -a

           Do not abstract all numbers to N and strings to 'S'.

       •   --debug, -d Run in debug mode.

           This option is available only if MySQL was built using WITH_DEBUG. MySQL release
           binaries provided by Oracle are not built using this option.

       •   -g pattern

           Consider only queries that match the (grep-style) pattern.

       •   -h host_name

           Host name of MySQL server for *-slow.log file name. The value can contain a wildcard.
           The default is * (match all).

       •   -i name

           Name of server instance (if using mysql.server startup script).

       •   -l

           Do not subtract lock time from total time.

       •   -n N

           Abstract numbers with at least N digits within names.

       •   -r

           Reverse the sort order.

       •   -s sort_type

           How to sort the output. The value of sort_type should be chosen from the following
           list:

           •   t, at: Sort by query time or average query time

           •   l, al: Sort by lock time or average lock time

           •   r, ar: Sort by rows sent or average rows sent

           •   c: Sort by count

           By default, mysqldumpslow sorts by average query time (equivalent to -s at).

       •   -t N

           Display only the first N queries in the output.

       •   --verbose, -v Verbose mode. Print more information about what the program does.

COPYRIGHT

       Copyright © 1997, 2020, Oracle and/or its affiliates.

       This documentation is free software; you can redistribute it and/or modify it only under
       the terms of the GNU General Public License as published by the Free Software Foundation;
       version 2 of the License.

       This documentation is distributed in the hope that it will be useful, but WITHOUT ANY
       WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
       PURPOSE. See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with the program;
       if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
       Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/.

SEE ALSO

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

AUTHOR

       Oracle Corporation (http://dev.mysql.com/).