mysqldumpslow (1) Linux Manual Page

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 / mysqld80 -
            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. All rights reserved.

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/).

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