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 5.2.5, "The
       Slow Query Log").  mysqldumpslow parses MySQL 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.

       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.

           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
       Copyright (C) 1997, 2011, 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/).



MySQL 5.1                                                  10/26/2011                                           MYSQLDUMPSLOW(1)