mysqlslap壓力測試

mysqlslap是一個mysql官方提供的壓力測試工具,通過模擬多個併發客戶端訪問mysql來執行測試。

執行mysqlslap的三個階段：

• 建立庫、表及指定的用於測試的已經儲存了的程式或資料，此階段使用單個客戶端連線
• 執行負載測試，此階段可使用多個併發客戶端。
• 清除測試記錄（斷開連線，刪除測試表等），此階段使用單個客戶端連線

通過mysqlslap --help可以獲得可用的選項。

shell> mysqlslap --help
mysqlslap  Ver 1.0 Distrib 5.6.19, for Linux (i686)
Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Run a query multiple times against the server.

Usage: mysqlslap [OPTIONS]

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /db/mysql/mysql1/etc/my.cnf ~/.my.cnf 
The following groups are read: mysqlslap client
The following options may be given as the first argument:
--print-defaults        Print the program argument list and exit.
--no-defaults           Don't read default options from any option file,
                        except for login file.
--defaults-file=#       Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
--defaults-group-suffix=#
                        Also read groups with concat(group, suffix)
--login-path=#          Read this path from the login file.
  -?, --help          Display this help and exit.
  -a, --auto-generate-sql 
                      Generate SQL where not supplied by file or command line.
  --auto-generate-sql-add-autoincrement 
                      Add an AUTO_INCREMENT column to auto-generated tables.
  --auto-generate-sql-execute-number=# 
                      Set this number to generate a set number of queries to
                      run.
  --auto-generate-sql-guid-primary 
                      Add GUID based primary keys to auto-generated tables.
  --auto-generate-sql-load-type=name 
                      Specify test load type: mixed, update, write, key, or
                      read; default is mixed.
  --auto-generate-sql-secondary-indexes=# 
                      Number of secondary indexes to add to auto-generated
                      tables.
  --auto-generate-sql-unique-query-number=# 
                      Number of unique queries to generate for automatic tests.
  --auto-generate-sql-unique-write-number=# 
                      Number of unique queries to generate for
                      auto-generate-sql-write-number.
  --auto-generate-sql-write-number=# 
                      Number of row inserts to perform for each thread (default
                      is 100).
  --commit=#          Commit records every X number of statements.
  -C, --compress      Use compression in server/client protocol.
  -c, --concurrency=name 
                      Number of clients to simulate for query to run.
  --create=name       File or string to use create tables.
  --create-schema=name 
                      Schema to run tests in.
  --csv[=name]        Generate CSV output to named file or to stdout if no file
                      is named.
  -#, --debug[=#]     This is a non-debug version. Catch this and exit.
  --debug-check       Check memory and open file usage at exit.
  -T, --debug-info    Print some debug info at exit.
  --default-auth=name Default authentication client-side plugin to use.
  -F, --delimiter=name 
                      Delimiter to use in SQL statements supplied in file or
                      command line.
  --detach=#          Detach (close and reopen) connections after X number of
                      requests.
  --enable-cleartext-plugin 
                      Enable/disable the clear text authentication plugin.
  -e, --engine=name   Storage engine to use for creating the table.
  -h, --host=name     Connect to host.
  -i, --iterations=#  Number of times to run the tests.
  --no-drop           Do not drop the schema after the test.
  -x, --number-char-cols=name 
                      Number of VARCHAR columns to create in table if
                      specifying --auto-generate-sql.
  -y, --number-int-cols=name 
                      Number of INT columns to create in table if specifying
                      --auto-generate-sql.
  --number-of-queries=# 
                      Limit each client to this number of queries (this is not
                      exact).
  --only-print        Do not connect to the databases, but instead print out
                      what would have been done.
  -p, --password[=name] 
                      Password to use when connecting to server. If password is
                      not given it's asked from the tty.
  --plugin-dir=name   Directory for client-side plugins.
  -P, --port=#        Port number to use for connection.
  --post-query=name   Query to run or file containing query to execute after
                      tests have completed.
  --post-system=name  system() string to execute after tests have completed.
  --pre-query=name    Query to run or file containing query to execute before
                      running tests.
  --pre-system=name   system() string to execute before running tests.
  --protocol=name     The protocol to use for connection (tcp, socket, pipe,
                      memory).
  -q, --query=name    Query to run or file containing query to run.
  --secure-auth       Refuse client connecting to server if it uses old
                      (pre-4.1.1) protocol.
                      (Defaults to on; use --skip-secure-auth to disable.)
  -s, --silent        Run program in silent mode - no output.
  -S, --socket=name   The socket file to use for connection.
  --ssl               Enable SSL for connection (automatically enabled with
                      other flags).
  --ssl-ca=name       CA file in PEM format (check OpenSSL docs, implies
                      --ssl).
  --ssl-capath=name   CA directory (check OpenSSL docs, implies --ssl).
  --ssl-cert=name     X509 cert in PEM format (implies --ssl).
  --ssl-cipher=name   SSL cipher to use (implies --ssl).
  --ssl-key=name      X509 key in PEM format (implies --ssl).
  --ssl-crl=name      Certificate revocation list (implies --ssl).
  --ssl-crlpath=name  Certificate revocation list path (implies --ssl).
  --ssl-verify-server-cert 
                      Verify server's "Common Name" in its cert against
                      hostname used when connecting. This option is disabled by
                      default.
  -u, --user=name     User for login if not current user.
  -v, --verbose       More verbose output; you can use this multiple times to
                      get even more verbose output.
  -V, --version       Output version information and exit.

示例如下：
指定建表查詢語句，並在50個客戶端分別執行200次查詢

shell> mysqlslap --delimiter=";" -uroot -p -S /tmp/mysql3306.sock
       --create="CREATE TABLE a (b int);INSERT INTO a VALUES (23)"
       --query="SELECT * FROM a" --concurrency=50 --iterations=200

Benchmark
    Average number of seconds to run all queries: 0.011 seconds
    Minimum number of seconds to run all queries: 0.008 seconds
    Maximum number of seconds to run all queries: 0.052 seconds
    Number of clients running queries: 50
    Average number of queries per client: 1

shell> mysqlslap --defaults-file=/etc/my.cnf --concurrency=200 --iterations=100 --number-int-cols=4 
      --number-char-cols=35 --auto-generate-sql --auto-generate-sql-add-autoincrement 
      --auto-generate-sql-load-type=mixed --engine=myisam,innodb --number-of-queries=200 
      --debug-info -uroot -p -S/tmp/mysql3306.sock

Benchmark
    Running for engine myisam
    Average number of seconds to run all queries: 0.151 seconds
    Minimum number of seconds to run all queries: 0.115 seconds
    Maximum number of seconds to run all queries: 0.341 seconds
    Number of clients running queries: 200
    Average number of queries per client: 1

Benchmark
    Running for engine innodb
    Average number of seconds to run all queries: 0.207 seconds
    Minimum number of seconds to run all queries: 0.137 seconds
    Maximum number of seconds to run all queries: 0.423 seconds
    Number of clients running queries: 200
    Average number of queries per client: 1


User time 1.20, System time 14.81
Maximum resident set size 8452, Integral resident set size 0
Non-physical pagefaults 119805, Physical pagefaults 12, Swaps 0
Blocks in 2528 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 395038, Involuntary context switches 2711

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