mariadb/man/mysqldumpslow.1

.\"     Title: \fBmysqldumpslow\fR
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.70.1 <http://docbook.sf.net/>
.\"      Date: 03/31/2009
.\"    Manual: MySQL Database System
.\"    Source: MySQL 5.1
.\"
.TH "\fBMYSQLDUMPSLOW\fR" "1" "03/31/2009" "MySQL 5.1" "MySQL Database System"
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.SH "NAME"
mysqldumpslow \- Summarize slow query log files
.SH "SYNOPSIS"
.HP 39
\fBmysqldumpslow [\fR\fBoptions\fR\fB] [\fR\fB\fIlog_file\fR\fR\fB ...]\fR
.SH "DESCRIPTION"
.PP
The MySQL slow query log contains information about queries that take a long time to execute (see
Section\ 5.2.5, \(lqThe Slow Query Log\(rq).
\fBmysqldumpslow\fR
parses MySQL slow query log files and prints a summary of their contents.
.PP
Normally,
\fBmysqldumpslow\fR
groups queries that are similar except for the particular values of number and string data values. It
\(lqabstracts\(rq
these values to
N
and
\'S'
when displaying summary output. The
\fB\-a\fR
and
\fB\-n\fR
options can be used to modify value abstracting behavior.
.PP
Invoke
\fBmysqldumpslow\fR
like this:
.sp
.RS 3n
.nf
shell> \fBmysqldumpslow [\fR\fB\fIoptions\fR\fR\fB] [\fR\fB\fIlog_file\fR\fR\fB ...]\fR
.fi
.RE
.PP
\fBmysqldumpslow\fR
supports the following options:
.TP 3n
\(bu
\fB\-\-help\fR
.sp
Display a help message and exit.
.TP 3n
\(bu
\fB\-a\fR
.sp
Do not abstract all numbers to
N
and strings to
\'S'.
.TP 3n
\(bu
\fB\-\-debug\fR,
\fB\-d\fR
.sp
Run in debug mode.
.TP 3n
\(bu
\fB\-g \fR\fB\fIpattern\fR\fR
.sp
Consider only queries that match the (\fBgrep\fR\-style) pattern.
.TP 3n
\(bu
\fB\-h \fR\fB\fIhost_name\fR\fR
.sp
Host name of MySQL server for
\fI*\-slow.log\fR
file name. The value can contain a wildcare. The default is
*
(match all).
.TP 3n
\(bu
\fB\-i \fR\fB\fIname\fR\fR
.sp
Name of server instance (if using
\fBmysql.server\fR
startup script).
.TP 3n
\(bu
\fB\-l\fR
.sp
Do not subtract lock time from total time.
.TP 3n
\(bu
\fB\-n \fR\fB\fIN\fR\fR
.sp
Abstract numbers with at least
\fIN\fR
digits within names.
.TP 3n
\(bu
\fB\-r\fR
.sp
Reverse the sort order.
.TP 3n
\(bu
\fB\-s \fR\fB\fIsort_type\fR\fR
.sp
How to sort the output. The value of
\fIsort_type\fR
should be chosen from the following list:
.RS 3n
.TP 3n
\(bu
t,
at: Sort by query time or average query time
.TP 3n
\(bu
l,
al: Sort by lock time or average lock time
.TP 3n
\(bu
s,
as: Sort by rows sent or average rows went
.TP 3n
\(bu
c: Sort by count
.RE
.TP 3n
\(bu
\fB\-t \fR\fB\fIN\fR\fR
.sp
Display only the first
\fIN\fR
queries in the output.
.TP 3n
\(bu
\fB\-\-verbose\fR,
\fB\-v\fR
.sp
Verbose mode. Print more information about what the program does.
.sp
.RE
.PP
Example of usage:
.sp
.RS 3n
.nf
shell> \fBmysqldumpslow\fR
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
.fi
.RE
.SH "COPYRIGHT"
.PP
Copyright 2007\-2008 MySQL AB, 2009 Sun Microsystems, Inc.
.PP
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.
.PP
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.
.PP
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/.
.SH "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/.
.SH AUTHOR
MySQL AB (http://www.mysql.com/).