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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. 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 parallel clients to simulate.

       ?   --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 6.3.7, "Pluggable Authentication".

           This option was added in MySQL 5.6.2.

       ?   --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 6.5.1.7, "The Cleartext
           Client-Side Authentication Plugin".) This option was added in MySQL 5.6.7.

       ?   --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).
           This option was added in MySQL 5.6.6.

       ?   --no-drop

           Prevent mysqlslap from dropping any schema it creates during the test run. This option was added in MySQL
           5.6.3.

       ?   --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 6.3.7, "Pluggable
           Authentication".

           This option was added in MySQL 5.6.2.

       ?   --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 is enabled by default; use --skip-secure-auth to disable
           it. This option was added in MySQL 5.6.17.

               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
               will be removed in a future MySQL release. For account upgrade instructions, see Section 6.5.1.3,
               "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.

       ?   --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 6.4.5, "Command Options for Secure Connections".

       ?   --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 (C) 1997, 2016, 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 5.6                         07/08/2016                      MYSQLSLAP(1)