mysqldumpslow
(1)
名称
mysqldumpslow - Summarize slow query log files
用法概要
mysqldumpslow [options] [log_file ...]
描述
MySQL Database System MYSQLDUMPSLOW(1)
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 5.2.5, "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 ...]
mysqldumpslow supports the following options.
o --help
Display a help message and exit.
o -a
Do not abstract all numbers to N and strings to 'S'.
o --debug, -d
Run in debug mode.
o -g pattern
Consider only queries that match the (grep-style)
pattern.
o -h host_name
Host name of MySQL server for *-slow.log file name. The
value can contain a wildcard. The default is * (match
all).
o -i name
Name of server instance (if using mysql.server startup
script).
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o -l
Do not subtract lock time from total time.
o -n N
Abstract numbers with at least N digits within names.
o -r
Reverse the sort order.
o -s sort_type
How to sort the output. The value of sort_type should be
chosen from the following list:
o t, at: Sort by query time or average query time
o l, al: Sort by lock time or average lock time
o r, ar: Sort by rows sent or average rows sent
o c: Sort by count
By default, mysqldumpslow sorts by average query time
(equivalent to -s at).
o -t N
Display only the first N queries in the output.
o --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 (C) 1997, 2013, Oracle and/or its affiliates. All
rights reserved.
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This software and related documentation are provided under a
license agreement containing restrictions on use and
disclosure and are protected by intellectual property laws.
Except as expressly permitted in your license agreement or
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find any errors, please report them to us in writing.
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For more information on the terms of this license, or for
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For additional documentation on MySQL products, including
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ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | database/mysql-55/client |
+---------------+--------------------------+
|Stability | Uncommitted |
+---------------+--------------------------+
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/).
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://downloads.mysql.com/archives/mysql-5.5/mysql-5.5.31.tar.gz
Further information about this software can be found on the
open source community website at http://dev.mysql.com/.
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