MYSQLDUMPSLOWSection: MySQL Database System (1)
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NAMEmysqldumpslow - Summarize slow query log files
- mysqldumpslow [options] [log_file ...]
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/mysqld57-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 Display a help message and exit.
Do not abstract all numbers to N and strings to 'S'.
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.
Consider only queries that match the (grep-style) pattern.
Host name of MySQL server for *-slow.log file name. The value can contain a wildcard. The default is * (match all).
Name of server instance (if using mysql.server startup script).
Do not subtract lock time from total time.
Abstract numbers with at least N digits within names.
Reverse the sort order.
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).
Display only the first N queries in the output.
- • --verbose, -v Verbose mode. Print more information about what the program does.
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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.
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SEE ALSOFor 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/.
AUTHOROracle Corporation (http://dev.mysql.com/).
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