mysqldumpslow(1) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | COPYRIGHT | SEE ALSO | AUTHOR | COLOPHON

MYSQLDUMPSLOW(1)         MariaDB Database System        MYSQLDUMPSLOW(1)

NAME         top

       mysqldumpslow - Summarize slow query log files

SYNOPSIS         top

       mysqldumpslow [options] [log_file ...]

DESCRIPTION         top

       The MariaDB slow query log contains information about queries
       that take a long time to execute.  mysqldumpslow parses MariaDB
       slow query log files and prints a summary of 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. The -a and -n options can be used to modify value
       abstracting behavior.

       Invoke mysqldumpslow like this:

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

       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.

       •   -g pattern

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

       •   -h host_name

           Host name of MariaDB 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, aa: Sort by rows affected or average rows affected

           •   l, ae: Sort by rows examined or aggregate rows examined

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

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

           •   s, as: Sort by rows sent or average rows sent

           •   c: Sort by count

       •   -t N

           Display only the first N queries in the output.

       •   --verbose, -v

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

       Example of usage:

           shell> mysqldumpslow
           Reading mysql slow query log from /usr/local/mysql/data/mysqld51-apple-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

COPYRIGHT         top

       Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc.,
       2010-2015 MariaDB Foundation

       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
       02110-1335 USA or see http://www.gnu.org/licenses/.

SEE ALSO         top

       For more information, please refer to the MariaDB Knowledge Base,
       available online at https://mariadb.com/kb/

AUTHOR         top

       MariaDB Foundation (http://www.mariadb.org/).

COLOPHON         top

       This page is part of the MariaDB (MariaDB database server)
       project.  Information about the project can be found at 
       ⟨http://mariadb.org/⟩.  If you have a bug report for this manual
       page, see ⟨https://mariadb.com/kb/en/mariadb/reporting-bugs/⟩.
       This page was obtained from the project's upstream Git repository
       ⟨https://github.com/MariaDB/server⟩ on 2021-04-01.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2020-11-03.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

MariaDB 10.1                   14/12/2015               MYSQLDUMPSLOW(1)