mysqlslap man page on DragonFly
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MYSQLSLAP(1) MySQL Database System MYSQLSLAP(1)
NAME
mysqlslap - load emulation client
SYNOPSIS
mysqlslap [options]
DESCRIPTION
mysqlslap 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.
Invoke mysqlslap like this:
shell> mysqlslap [options]
Some options such as --create or --query 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 --delimiter option to specify a different delimiter, which
enables you to specify statements that span multiple lines or place
multiple statements on a single line. You cannot include comments in a
file; mysqlslap does not understand them.
mysqlslap runs in three stages:
1. Create schema, table, and optionally any stored programs or data to
use for the test. This stage uses a single client connection.
2. Run the load test. This stage can use many client connections.
3. Clean up (disconnect, drop table if specified). This stage uses a
single client connection.
Examples:
Supply your own create and query SQL statements, with 50 clients
querying and 200 selects for each (enter the command on a single line):
mysqlslap --delimiter=";"
--create="CREATE TABLE a (b int);INSERT INTO a VALUES (23)"
--query="SELECT * FROM a" --concurrency=50 --iterations=200
Let mysqlslap build the query SQL statement with a table of two INT
columns and three VARCHAR columns. Use five clients querying 20 times
each. Do not create the table or insert the data (that is, use the
previous test's schema and data):
mysqlslap --concurrency=5 --iterations=20
--number-int-cols=2 --number-char-cols=3
--auto-generate-sql
Tell the program to load the create, insert, and query SQL statements
from the specified files, where the create.sql file has multiple table
creation statements delimited by ';' and multiple insert statements
delimited by ';'. The --query file will have multiple queries delimited
by ';'. Run all the load statements, then run all the queries in the
query file with five clients (five times each):
mysqlslap --concurrency=5
--iterations=5 --query=query.sql --create=create.sql
--delimiter=";"
mysqlslap supports the following options, which can be specified on the
command line or in the [mysqlslap] and [client] groups of an option
file. For information about option files used by MySQL programs, see
Section 4.2.6, “Using Option Files”.
· --help, -?
Display a help message and exit.
· --auto-generate-sql, -a
Generate SQL statements automatically when they are not supplied in
files or using command options.
· --auto-generate-sql-add-autoincrement
Add an AUTO_INCREMENT column to automatically generated tables.
· --auto-generate-sql-execute-number=N
Specify how many queries to generate automatically.
· --auto-generate-sql-guid-primary
Add a GUID-based primary key to automatically generated tables.
· --auto-generate-sql-load-type=type
Specify the test load type. The permissible values are read (scan
tables), write (insert into tables), key (read primary keys),
update (update primary keys), or mixed (half inserts, half scanning
selects). The default is mixed.
· --auto-generate-sql-secondary-indexes=N
Specify how many secondary indexes to add to automatically
generated tables. By default, none are added.
· --auto-generate-sql-unique-query-number=N
How many different queries to generate for automatic tests. For
example, if you run a key test that performs 1000 selects, you can
use this option with a value of 1000 to run 1000 unique queries, or
with a value of 50 to perform 50 different selects. The default is
10.
· --auto-generate-sql-unique-write-number=N
How many different queries to generate for
--auto-generate-sql-write-number. The default is 10.
· --auto-generate-sql-write-number=N
How many row inserts to perform on each thread. The default is 100.
· --commit=N
How many statements to execute before committing. The default is 0
(no commits are done).
· --compress, -C
Compress all information sent between the client and the server if
both support compression.
· --concurrency=N, -c N
The number of clients to simulate when issuing the SELECT
statement.
· --create=value
The file or string containing the statement to use for creating the
table.
· --create-schema=value
The schema in which to run the tests.
Note
If the --auto-generate-sql option is also given, mysqlslap
drops the schema at the end of the test run. To avoid this, use
the --no-drop option as well.
· --csv[=file_name]
Generate output in comma-separated values format. The output goes
to the named file, or to the standard output if no file is given.
· --debug[=debug_options], -# [debug_options]
Write a debugging log. A typical debug_options string is
d:t:o,file_name. The default is d:t:o,/tmp/mysqlslap.trace.
· --debug-check
Print some debugging information when the program exits.
· --debug-info, -T
Print debugging information and memory and CPU usage statistics
when the program exits.
· --default-auth=plugin
A hint about the client-side authentication plugin to use. See
Section 6.3.8, “Pluggable Authentication”.
· --defaults-extra-file=file_name
Read this option file after the global option file but (on Unix)
before the user option file. If the file does not exist or is
otherwise inaccessible, an error occurs. file_name is interpreted
relative to the current directory if given as a relative path name
rather than a full path name.
· --defaults-file=file_name
Use only the given option file. If the file does not exist or is
otherwise inaccessible, an error occurs. file_name is interpreted
relative to the current directory if given as a relative path name
rather than a full path name.
· --defaults-group-suffix=str
Read not only the usual option groups, but also groups with the
usual names and a suffix of str. For example, mysqlslap normally
reads the [client] and [mysqlslap] groups. If the
--defaults-group-suffix=_other option is given, mysqlslap also
reads the [client_other] and [mysqlslap_other] groups.
· --delimiter=str, -F str
The delimiter to use in SQL statements supplied in files or using
command options.
· --detach=N
Detach (close and reopen) each connection after each N statements.
The default is 0 (connections are not detached).
· --enable-cleartext-plugin
Enable the mysql_clear_password cleartext authentication plugin.
(See Section 6.3.9.8, “The Cleartext Client-Side Authentication
Plugin”.)
· --engine=engine_name, -e engine_name
The storage engine to use for creating tables.
· --host=host_name, -h host_name
Connect to the MySQL server on the given host.
· --iterations=N, -i N
The number of times to run the tests.
· --login-path=name
Read options from the named login path in the .mylogin.cnf login
path file. A “login path” is an option group containing options
that specify which MySQL server to connect to and which account to
authenticate as. To create or modify a login path file, use the
mysql_config_editor utility. See mysql_config_editor(1).
· --no-drop
Prevent mysqlslap from dropping any schema it creates during the
test run.
· --no-defaults
Do not read any option files. If program startup fails due to
reading unknown options from an option file, --no-defaults can be
used to prevent them from being read.
The exception is that the .mylogin.cnf file, if it exists, is read
in all cases. This permits passwords to be specified in a safer way
than on the command line even when --no-defaults is used.
(.mylogin.cnf is created by the mysql_config_editor utility. See
mysql_config_editor(1).)
· --number-char-cols=N, -x N
The number of VARCHAR columns to use if --auto-generate-sql is
specified.
· --number-int-cols=N, -y N
The number of INT columns to use if --auto-generate-sql is
specified.
· --number-of-queries=N
Limit each client to approximately this many queries. Query
counting takes into account the statement delimiter. For example,
if you invoke mysqlslap as follows, the ; delimiter is recognized
so that each instance of the query string counts as two queries. As
a result, 5 rows (not 10) are inserted.
shell> mysqlslap --delimiter=";" --number-of-queries=10
--query="use test;insert into t values(null)"
· --only-print
Do not connect to databases. mysqlslap only prints what it would
have done.
· --password[=password], -p[password]
The password to use when connecting to the server. If you use the
short option form (-p), you cannot have a space between the option
and the password. If you omit the password value following the
--password or -p option on the command line, mysqlslap prompts for
one.
Specifying a password on the command line should be considered
insecure. See Section 6.1.2.1, “End-User Guidelines for Password
Security”. You can use an option file to avoid giving the password
on the command line.
· --pipe, -W
On Windows, connect to the server using a named pipe. This option
applies only if the server supports named-pipe connections.
· --plugin-dir=dir_name
The directory in which to look for plugins. Specify this option if
the --default-auth option is used to specify an authentication
plugin but mysqlslap does not find it. See Section 6.3.8,
“Pluggable Authentication”.
· --port=port_num, -P port_num
The TCP/IP port number to use for the connection.
· --post-query=value
The file or string containing the statement to execute after the
tests have completed. This execution is not counted for timing
purposes.
· --post-system=str
The string to execute using system() after the tests have
completed. This execution is not counted for timing purposes.
· --pre-query=value
The file or string containing the statement to execute before
running the tests. This execution is not counted for timing
purposes.
· --pre-system=str
The string to execute using system() before running the tests. This
execution is not counted for timing purposes.
· --print-defaults
Print the program name and all options that it gets from option
files.
· --protocol={TCP|SOCKET|PIPE|MEMORY}
The connection protocol to use for connecting to the server. It is
useful when the other connection parameters normally would cause a
protocol to be used other than the one you want. For details on the
permissible values, see Section 4.2.2, “Connecting to the MySQL
Server”.
· --query=value, -q value
The file or string containing the SELECT statement to use for
retrieving data.
· --secure-auth
Do not send passwords to the server in old (pre-4.1) format. This
prevents connections except for servers that use the newer password
format. This option was added in MySQL 5.7.4.
As of MySQL 5.7.5, this option is deprecated and will be removed in
a future MySQL release. It is always enabled and attempting to
disable it (--skip-secure-auth, --secure-auth=0) produces an error.
Before MySQL 5.7.5, this option is enabled by default but can be
disabled.
Note
Passwords that use the pre-4.1 hashing method are less secure
than passwords that use the native password hashing method and
should be avoided. Pre-4.1 passwords are deprecated and support
for them is removed in MySQL 5.7.5. For account upgrade
instructions, see Section 6.3.9.3, “Migrating Away from Pre-4.1
Password Hashing and the mysql_old_password Plugin”.
· --shared-memory-base-name=name
On Windows, the shared-memory name to use, for connections made
using shared memory to a local server. This option applies only if
the server supports shared-memory connections.
· --silent, -s
Silent mode. No output.
· --socket=path, -S path
For connections to localhost, the Unix socket file to use, or, on
Windows, the name of the named pipe to use.
· --sql-mode=mode
Set the SQL mode for the client session. This option was added in
MySQL 5.7.5.
· --ssl*
Options that begin with --ssl specify whether to connect to the
server using SSL and indicate where to find SSL keys and
certificates. See Section 6.3.12.4, “SSL Command Options”.
· --user=user_name, -u user_name
The MySQL user name to use when connecting to the server.
· --verbose, -v
Verbose mode. Print more information about what the program does.
This option can be used multiple times to increase the amount of
information.
· --version, -V
Display version information and exit.
COPYRIGHT
Copyright © 1997, 2015, Oracle and/or its affiliates. All rights
reserved.
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.
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.
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/.
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/).
MySQL 5.7 11/28/2015 MYSQLSLAP(1)
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