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\FBMYSQLDUMPSLOW\FR
Section: MySQL Database System (1) Updated: 06/02/2017 Index
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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, lqThe Slow Query Logrq).
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
lqabstractsrq
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 MySQL 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,
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
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
Copyright © 1997, 2017, 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/).
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- COPYRIGHT
-
- SEE ALSO
-
- AUTHOR
-
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