mysqlslap
(1)
名称
mysqlslap - load emulation client
用法概要
mysqlslap [options]
描述
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
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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. mysqlslap also supports
the options for processing option files described at
Section 4.2.3.4, "Command-Line Options that Affect Option-
File Handling".
o --help, -?
Display a help message and exit.
o --auto-generate-sql, -a
Generate SQL statements automatically when they are not
supplied in files or using command options.
o --auto-generate-sql-add-autoincrement
Add an AUTO_INCREMENT column to automatically generated
tables.
o --auto-generate-sql-execute-number=N
Specify how many queries to generate automatically.
o --auto-generate-sql-guid-primary
Add a GUID-based primary key to automatically generated
tables.
o --auto-generate-sql-load-type=type
Specify the test load type. The permissible values are
read (scan tables), write (insert into tables), key
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(read primary keys), update (update primary keys), or
mixed (half inserts, half scanning selects). The default
is mixed.
o --auto-generate-sql-secondary-indexes=N
Specify how many secondary indexes to add to
automatically generated tables. By default, none are
added.
o --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.
o --auto-generate-sql-unique-write-number=N
How many different queries to generate for
--auto-generate-sql-write-number. The default is 10.
o --auto-generate-sql-write-number=N
How many row inserts to perform on each thread. The
default is 100.
o --commit=N
How many statements to execute before committing. The
default is 0 (no commits are done).
o --compress, -C
Compress all information sent between the client and the
server if both support compression.
o --concurrency=N, -c N
The number of clients to simulate when issuing the
SELECT statement.
o --create=value
The file or string containing the statement to use for
creating the table.
o --create-and-drop-schema=value
The schema in which to run the tests. mysqlslap drops
the schema at the end of the test run. This option was
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added in MySQL 5.5.12.
o --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 --create-and-drop-schema
option instead.
o --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.
o --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'.
o --debug-check
Print some debugging information when the program exits.
o --debug-info, -T
Print debugging information and memory and CPU usage
statistics when the program exits.
o --default-auth=plugin
The client-side authentication plugin to use. See
Section 6.3.6, "Pluggable Authentication".
This option was added in MySQL 5.5.10.
o --delimiter=str, -F str
The delimiter to use in SQL statements supplied in files
or using command options.
o --detach=N
Detach (close and reopen) each connection after each N
statements. The default is 0 (connections are not
detached).
o --enable-cleartext-plugin
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Enable the mysql_clear_password cleartext authentication
plugin. (See Section 6.3.6.4, "The Cleartext Client-Side
Authentication Plugin".) This option was added in MySQL
5.5.27.
o --engine=engine_name, -e engine_name
The storage engine to use for creating tables.
o --host=host_name, -h host_name
Connect to the MySQL server on the given host.
o --iterations=N, -i N
The number of times to run the tests.
o --number-char-cols=N, -x N
The number of VARCHAR columns to use if
--auto-generate-sql is specified.
o --number-int-cols=N, -y N
The number of INT columns to use if --auto-generate-sql
is specified.
o --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)"
o --only-print
Do not connect to databases. mysqlslap only prints what
it would have done.
o --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.
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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.
o --pipe, -W
On Windows, connect to the server using a named pipe.
This option applies only if the server supports
named-pipe connections.
o --plugin-dir=path
The directory in which to look for plugins. It may be
necessary to specify this option if the --default-auth
option is used to specify an authentication plugin but
mysqlslap does not find it. See Section 6.3.6,
"Pluggable Authentication".
This option was added in MySQL 5.5.10.
o --port=port_num, -P port_num
The TCP/IP port number to use for the connection.
o --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.
o --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.
o --post-system=str
The string to execute using system() after the tests
have completed. This execution is not counted for timing
purposes.
o --pre-query=value
The file or string containing the statement to execute
before running the tests. This execution is not counted
for timing purposes.
o --pre-system=str
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The string to execute using system() before running the
tests. This execution is not counted for timing
purposes.
o --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".
o --query=value, -q value
The file or string containing the SELECT statement to
use for retrieving data.
o --silent, -s
Silent mode. No output.
o --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.
o --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 6.3.8.4, "SSL Command
Options".
o --user=user_name, -u user_name
The MySQL user name to use when connecting to the
server.
o --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.
o --version, -V
Display version information and exit.
COPYRIGHT
Copyright (C) 1997, 2013, Oracle and/or its affiliates. All
rights reserved.
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ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | database/mysql-55/client |
+---------------+--------------------------+
|Stability | Uncommitted |
+---------------+--------------------------+
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/).
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://downloads.mysql.com/archives/mysql-5.5/mysql-5.5.31.tar.gz
Further information about this software can be found on the
open source community website at http://dev.mysql.com/.
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