# man > MYSQLDUMPSLOW(1)

[MYSQLDUMPSLOW(1)](https://www.chedong.com/phpMan.php/man/MYSQLDUMPSLOW/1/markdown)                        MySQL Database System                       [MYSQLDUMPSLOW(1)](https://www.chedong.com/phpMan.php/man/MYSQLDUMPSLOW/1/markdown)



## 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 7.4.5, “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:

           mysqldumpslow [_options_] [_log_file_ ...]

       Example output with no options given:

           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**

           ┌────────────────────┬────────┐
           │**Command-Line** **Format** │ --help │
           └────────────────────┴────────┘
           Display a help message and exit.

       •   **-a**

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

       •   **--debug**, **-d**

           ┌────────────────────┬─────────┐
           │**Command-Line** **Format** │ --debug │
           └────────────────────┴─────────┘
           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_

           ┌─────┬────────┐
           │**Type** │ String │
           └─────┴────────┘
           Consider only queries that match the (**grep**-style) pattern.

       •   **-h** _host_name_

           ┌──────────────┬────────┐
           │**Type**          │ String │
           ├──────────────┼────────┤
           │**Default** **Value** │ *      │
           └──────────────┴────────┘
           Host name of MySQL server for *-slow.log file name. The value can contain a wildcard. The
           default is * (match all).

       •   **-i** _name_

           ┌─────┬────────┐
           │**Type** │ String │
           └─────┴────────┘
           Name of server instance (if using **mysql.server** startup script).

       •   **-l** Do not subtract lock time from total time.

       •   **-n** _N_

           ┌─────┬─────────┐
           │**Type** │ Numeric │
           └─────┴─────────┘
           Abstract numbers with at least _N_ digits within names.

       •   **-r** Reverse the sort order.

       •   **-s** _sort_type_

           ┌──────────────┬────────┐
           │**Type**          │ String │
           ├──────────────┼────────┤
           │**Default** **Value** │ at     │
           └──────────────┴────────┘
           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_

           ┌─────┬─────────┐
           │**Type** │ Numeric │
           └─────┴─────────┘
           Display only the first _N_ queries in the output.

       •   **--verbose**, **-v**

           ┌────────────────────┬───────────┐
           │**Command-Line** **Format** │ --verbose │
           └────────────────────┴───────────┘
           Verbose mode. Print more information about what the program does.

## COPYRIGHT
       Copyright © 1997, 2024, 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/>).



MySQL 8.0                                    12/13/2024                             [MYSQLDUMPSLOW(1)](https://www.chedong.com/phpMan.php/man/MYSQLDUMPSLOW/1/markdown)