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
Invoke mysqldumpslow like this:
shell> mysqldumpslow [options] [log_file...]mysqldumpslow supports the following options.
Display a help message and exit.
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).
Do not subtract lock time from total time.
· -n N
Abstract numbers with at least N digits within names.
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
· 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:
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 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
02110-1301 USA or see http://www.gnu.org/licenses/.
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 2017-03-13. 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
MariaDB 10.1 14/12/2015 MYSQLDUMPSLOW(1)