.\"     Title: \fBmysqlslap\fR
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.70.1 <http://docbook.sf.net/>
.\"      Date: 09/23/2007
.\"    Manual: MySQL Database System
.\"    Source: MySQL 5.1
.\"
.TH "\fBMYSQLSLAP\fR" "1" "09/23/2007" "MySQL 5.1" "MySQL Database System"
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.SH "NAME"
mysqlslap \- load emulation client
.SH "SYNOPSIS"
.HP 20
\fBmysqlslap [\fR\fB\fIoptions\fR\fR\fB]\fR
.SH "DESCRIPTION"
.PP
\fBmysqlslap\fR
is a diagnostic program designed to emulate client load for a MySQL server and to report the timing of each stage. It works as if multiple clients are accessing the server.
\fBmysqlslap\fR
is available as of MySQL 5.1.4.
.PP
Invoke
\fBmysqlslap\fR
like this:
.sp
.RS 3n
.nf
shell> \fBmysqlslap [\fR\fB\fIoptions\fR\fR\fB]\fR\fB\fIdb_name\fR\fR
.fi
.RE
.PP
Some options such as
\fB\-\-create\fR
or
\fB\-\-query\fR
enable you to specify a string containing an SQL statement or a file containing statements. If you specify a file, by default it must contain one statement per line. (That is, the implicit statement delimiter is the newline character.) Use the
\fB\-\-delimiter\fR
to specify different delimiter, which allows you to specify statements that span multiple lines or place multiple statements on a single line. You cannot include comments in a file;
\fBmysqlslap\fR
does not understand them.
.PP
\fBmysqlslap\fR
supports the following options:
.TP 3n
\(bu
\fB\-\-help\fR,
\fB\-?\fR
.sp
Display a help message and exit.
.TP 3n
\(bu
\fB\-\-auto\-generate\-sql\fR,
\fB\-a\fR
.sp
Generate SQL statements automatically when they are not supplied in files or via command options.
.TP 3n
\(bu
\fB\-\-compress\fR,
\fB\-C\fR
.sp
Compress all information sent between the client and the server if both support compression.
.TP 3n
\(bu
\fB\-\-concurrency=\fR\fB\fIN\fR\fR,
\fB\-c \fR\fB\fIN\fR\fR
.sp
The number of clients to simulate when issuing the
SELECT
statement.
.TP 3n
\(bu
\fB\-\-create=\fR\fB\fIvalue\fR\fR
.sp
The file or string to use for creating the table.
.TP 3n
\(bu
\fB\-\-create\-schema=\fR\fB\fIvalue\fR\fR
.sp
The schema in which to run the tests. This option was added in MySQL 5.1.5.
.TP 3n
\(bu
\fB\-\-csv[=\fR\fB\fIfile\fR\fR\fB]\fR
.sp
Generate output in comma\-separated values format. The output goes to the named file, or to the standard output if no file is given. This option was added in MySQL 5.1.5.
.TP 3n
\(bu
\fB\-\-debug[=\fR\fB\fIdebug_options\fR\fR\fB]\fR,
\fB\-# [\fR\fB\fIdebug_options\fR\fR\fB]\fR
.sp
Write a debugging log. The
\fIdebug_options\fR
string often is
\'d:t:o,\fIfile_name\fR'.
.TP 3n
\(bu
\fB\-\-debug\-check\fR
.sp
Print some debugging information when the program exits. This option was added in MySQL 5.1.21.
.TP 3n
\(bu
\fB\-\-debug\-info\fR,
\fB\-T\fR
.sp
Print debugging information and memory and CPU usage statistics when the program exits. This option was added in MySQL 5.1.21.
.TP 3n
\(bu
\fB\-\-delimiter=\fR\fB\fIstr\fR\fR,
\fB\-F \fR\fB\fIstr\fR\fR
.sp
The delimiter to use in SQL statements supplied in files or via command options.
.TP 3n
\(bu
\fB\-\-engine=\fR\fB\fIengine_name\fR\fR,
\fB\-e \fR\fB\fIengine_name\fR\fR
.sp
The storage engine to use for creating the table.
.TP 3n
\(bu
\fB\-\-host=\fR\fB\fIhost_name\fR\fR,
\fB\-h \fR\fB\fIhost_name\fR\fR
.sp
Connect to the MySQL server on the given host.
.TP 3n
\(bu
\fB\-\-iterations=\fR\fB\fIN\fR\fR,
\fB\-i \fR\fB\fIN\fR\fR
.sp
The number of times to run the tests.
.TP 3n
\(bu
\fB\-\-lock\-directory=\fR\fB\fIpath\fR\fR
.sp
The directory to use for storing locks. This option was added in MySQL 5.1.5.
.TP 3n
\(bu
\fB\-\-number\-char\-cols=\fR\fB\fIN\fR\fR,
\fB\-x \fR\fB\fIN\fR\fR
.sp
The number of
VARCHAR
columns to use if
\fB\-\-auto\-generate\-sql\fR
is specified.
.TP 3n
\(bu
\fB\-\-number\-int\-cols=\fR\fB\fIN\fR\fR,
\fB\-y \fR\fB\fIN\fR\fR
.sp
The number of
INT
columns to use if
\fB\-\-auto\-generate\-sql\fR
is specified.
.TP 3n
\(bu
\fB\-\-number\-of\-queries=\fR\fB\fIN\fR\fR
.sp
Limit each client to approximately this number of queries. This option was added in MySQL 5.1.5.
.TP 3n
\(bu
\fB\-\-only\-print\fR
.sp
Do not connect to databases.
\fBmysqlslap\fR
only prints what it would have done. This option was added in MySQL 5.1.5.
.TP 3n
\(bu
\fB\-\-password[=\fR\fB\fIpassword\fR\fR\fB]\fR,
\fB\-p[\fR\fB\fIpassword\fR\fR\fB]\fR
.sp
The password to use when connecting to the server. If you use the short option form (\fB\-p\fR), you
\fIcannot\fR
have a space between the option and the password. If you omit the
\fIpassword\fR
value following the
\fB\-\-password\fR
or
\fB\-p\fR
option on the command line, you are prompted for one.
.sp
Specifying a password on the command line should be considered insecure. See
Section\ 6.6, \(lqKeeping Your Password Secure\(rq.
.TP 3n
\(bu
\fB\-\-port=\fR\fB\fIport_num\fR\fR,
\fB\-P \fR\fB\fIport_num\fR\fR
.sp
The TCP/IP port number to use for the connection.
.TP 3n
\(bu
\fB\-\-protocol={TCP|SOCKET|PIPE|MEMORY}\fR
.sp
The connection protocol to use.
.TP 3n
\(bu
\fB\-\-preserve\-schema\fR
.sp
Preserve the schema from the
\fBmysqlslap\fR
run. This option was added in MySQL 5.1.5.
.TP 3n
\(bu
\fB\-\-query=\fR\fB\fIvalue\fR\fR,
\fB\-q \fR\fB\fIvalue\fR\fR
.sp
The file or string containing the
SELECT
statement to use for retrieving data.
.TP 3n
\(bu
\fB\-\-silent\fR,
\fB\-s\fR
.sp
Silent mode. No output.
.TP 3n
\(bu
\fB\-\-skip\-query\fR,
\fB\-Q\fR
.sp
Don't run any
SELECT
statements.
.TP 3n
\(bu
\fB\-\-slave\fR
.sp
Follow master locks for other
\fBmysqlslap\fR
clients. Use this option if you are trying to synchronize around one master server with
\fB\-\-lock\-directory\fR
plus NFS. This option was added in MySQL 5.1.5.
.TP 3n
\(bu
\fB\-\-socket=\fR\fB\fIpath\fR\fR,
\fB\-S \fR\fB\fIpath\fR\fR
.sp
For connections to
localhost, the Unix socket file to use, or, on Windows, the name of the named pipe to use.
.TP 3n
\(bu
\fB\-\-ssl*\fR
.sp
Options that begin with
\fB\-\-ssl\fR
specify whether to connect to the server via SSL and indicate where to find SSL keys and certificates. See
Section\ 6.7.3, \(lqSSL Command Options\(rq.
.TP 3n
\(bu
\fB\-\-use\-threads\fR
.sp
On Unix, the default is to use
fork()
calls. This option causes
\fBpthread\fR
calls to be used instead. On Windows, the default is to use
pthread
calls and the option has no effect. This option was added in MySQL 5.1.6.
.TP 3n
\(bu
\fB\-\-user=\fR\fB\fIuser_name\fR\fR,
\fB\-u \fR\fB\fIuser_name\fR\fR
.sp
The MySQL username to use when connecting to the server.
.TP 3n
\(bu
\fB\-\-verbose\fR,
\fB\-v\fR
.sp
Verbose mode. Print more information about what the program does.
.TP 3n
\(bu
\fB\-\-version\fR,
\fB\-V\fR
.sp
Display version information and exit.
.SH "COPYRIGHT"
.PP
Copyright 2007 MySQL AB
.PP
This documentation is free software; you can redistribute it and/or modify it 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/.
.PP
Please email
<docs@mysql.com>
for more information or if you are interested in doing a translation.
.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/).