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Updated: Thursday, June 13, 2019
 
 

mysqldumpslow (1)

Name

mysqldumpslow - Summarize slow query log files

Synopsis

mysqldumpslow [options] [log_file ...]

Description

MYSQLDUMPSLOW(1)             MySQL Database System            MYSQLDUMPSLOW(1)



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.

       o   --help

           Display a help message and exit.

       o   -a

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

       o   --debug, -d

           Run in debug mode.

       o   -g pattern

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

       o   -h host_name

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

       o   -i name

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

       o   -l

           Do not subtract lock time from total time.

       o   -n N

           Abstract numbers with at least N digits within names.

       o   -r

           Reverse the sort order.

       o   -s sort_type

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

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

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

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

           o   c: Sort by count

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

       o   -t N

           Display only the first N queries in the output.

       o   --verbose, -v

           Verbose mode. Print more information about what the program does.

COPYRIGHT
       Copyright (C) 1997, 2018, 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/.



ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+-------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE   |
       +---------------+-------------------+
       |Availability   | database/mysql-57 |
       +---------------+-------------------+
       |Stability      | Uncommitted       |
       +---------------+-------------------+
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/).



NOTES
       This software was built from source available at
       https://github.com/oracle/solaris-userland.  The original community
       source was downloaded from
       https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-boost-5.7.25.tar.gz

       Further information about this software can be found on the open source
       community website at https://dev.mysql.com/.



MySQL 5.7                         12/20/2018                  MYSQLDUMPSLOW(1)