'\" t
.\"
.TH "\fBMARIADB-DUMPSLOW\fR" "1" "3 September 2024" "MariaDB 11.4" "MariaDB Database System"
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.\" mariadb-dumpslow
.SH "NAME"
mariadb-dumpslow \- Summarize slow query log files (mariadb-dumpslow is now a symlink to mariadb-dumpslow)
.SH "SYNOPSIS"
.HP \w'\fBmariadb-dumpslow\ [\fR\fBoptions\fR\fB]\ [\fR\fB\fIlog_file\fR\fR\fB\ \&.\&.\&.]\fR\ 'u
\fBmariadb-dumpslow [\fR\fBoptions\fR\fB] [\fR\fB\fIlog_file\fR\fR\fB \&.\&.\&.]\fR
.SH "DESCRIPTION"
.PP
The MariaDB slow query log contains information about queries that take a long time to execute\&.
\fBmariadb-dumpslow\fR
parses MariaDB slow query log files and prints a summary of their contents\&.
.PP
Normally,
\fBmariadb-dumpslow\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
\fBmariadb-dumpslow\fR
like this:
.sp
.if n \{\
.RS 4
.\}
.nf
shell> \fBmariadb-dumpslow [\fR\fB\fIoptions\fR\fR\fB] [\fR\fB\fIlog_file\fR\fR\fB \&.\&.\&.]\fR
.fi
.if n \{\
.RE
.\}
.PP
\fBmariadb-dumpslow\fR
supports the following options\&.
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-dumpslow: help option
.\" help option: mariadb-dumpslow
\fB\-\-help\fR
.sp
Display a help message and exit\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-a\fR
.sp
Do not abstract all numbers to N and strings to 'S'.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-dumpslow: debug option
.\" debug option: mariadb-dumpslow
\fB\-\-debug\fR,
\fB\-d\fR
.sp
Run in debug mode\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-g \fR\fB\fIpattern\fR\fR
.sp
Consider only queries that match the (\fBgrep\fR\-style) pattern\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-h \fR\fB\fIhost_name\fR\fR
.sp
Host name of MariaDB server for
*\-slow\&.log
file name\&. The value can contain a wildcard\&. The default is
*
(match all)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-i \fR\fB\fIname\fR\fR
.sp
Name of server instance (if using
\fBmariadb\&.server\fR
startup script)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-l\fR
.sp
Do not subtract lock time from total time\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-n \fR\fB\fIN\fR\fR
.sp
Abstract numbers with at least
\fIN\fR
digits within names\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-r\fR
.sp
Reverse the sort order\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\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:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
t,
aa: Sort by rows affected or average rows affected
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
l,
ae: Sort by rows examined or aggregate rows examined
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
l,
at: Sort by query time or average query time
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
l,
al: Sort by lock time or average lock time
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
s,
as: Sort by rows sent or average rows sent
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
c: Sort by count
.RE
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fB\-t \fR\fB\fIN\fR\fR
.sp
Display only the first
\fIN\fR
queries in the output\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-dumpslow: verbose option
.\" verbose option: mariadb-dumpslow
\fB\-\-verbose\fR,
\fB\-v\fR
.sp
Verbose mode\&. Print more information about what the program does\&.
.RE
.PP
Example of usage:
.sp
.if n \{\
.RS 4
.\}
.nf
shell> \fBmariadb-dumpslow\fR
Reading mariadb 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
.if n \{\
.RE
.\}
.SH "COPYRIGHT"
.br
.PP
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc., 2010-2024 MariaDB Foundation
.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 02110-1335 USA or see http://www.gnu.org/licenses/.
.sp
.SH "SEE ALSO"
For more information, please refer to the MariaDB Knowledge Base, available online at https://mariadb.com/kb/
.SH AUTHOR
MariaDB Foundation (http://www.mariadb.org/).