MYSQLDUMPSLOW(1) | MySQL Database System | MYSQLDUMPSLOW(1) |
NAME¶
mysqldumpslow - Summarize slow query log filesSYNOPSIS¶
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 ...]
•--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:
By default, mysqldumpslow sorts by average query time (equivalent to
-s at).
•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
•-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, 2015, 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/).11/06/2015 | MySQL 5.5 |