MySQL Study之--MySQL压力測试工具mysqlslap

MySQL Study之--MySQL压力測试工具mysqlslap

一、Mysqlslap介绍

    mysqlslap是MySQL5.1之后自带的benchmark基准測试工具，类似Apache Bench负载产生工具。生成schema。装载数据，运行benckmark和查询数据。语法简单，灵活。easy使用。该工具可以模拟多个client同一时候并发的向server发出查询更新，给出了性能測试数据并且提供了多种引擎的性能比較。mysqlslap为mysql性能优化前后提供了直观的验证根据。笔者建议系统运维人员应该掌握一些常见的压力測试工具，这样才干较为准确的掌握线上系统可以支撑的用户流量上限及其抗压性等问题。

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二、用法介绍

能够使用mysqlslap --help来显示用法：

1) --concurrency代表并发数量，多个能够用逗号隔开,比如：concurrency=10,50,100, 并发连接线程数各自是10、50、100个并发。

2) --engines代表要測试的引擎，能够有多个，用分隔符隔开。

3) --iterations代表要执行这些測试多少次。

4) --auto-generate-sql 代表用系统自己生成的SQL脚本来測试。

5）--auto-generate-sql-load-type 代表要測试的是读还是写还是两者混合的（read,write,update,mixed）

6) --number-of-queries 代表总共要执行多少次查询。每一个client执行的查询数量能够用查询总数/并发数来计算。

7) --debug-info 代表要额外输出CPU以及内存的相关信息。

8) --number-int-cols ：创建測试表的 int 型字段数量

9) --auto-generate-sql-add-autoincrement : 代表对生成的表自己主动加入auto_increment列。从5.1.18版本号開始

10) --number-char-cols 创建測试表的 char 型字段数量。

11) --create-schema 測试的schema，MySQL中schema也就是database。

12) --query  使用自己定义脚本运行測试，比如能够调用自己定义的一个存储过程或者sql语句来运行測试。

13) --only-print 假设仅仅想打印看看SQL语句是什么，能够用这个选项。

二、案例分析

[root@mysrv ~]# mysqlslap -V
mysqlslap  Ver 1.0 Distrib 5.1.66, for redhat-linux-gnu (x86_64)

[root@mysrv ~]# mysqlslap --help
mysqlslap  Ver 1.0 Distrib 5.1.66, for redhat-linux-gnu (x86_64)
Copyright (c) 2005, 2012, 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/mysql/my.cnf /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.
--defaults-file=#       Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
  -?

, --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.
  -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.
  -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.
  -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.
  -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).Disable with --skip-ssl.
  --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-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.

案例一：

[root@mysrv ~]#  mysqlslap -uroot -poracle --concurrency=100 --iterations=1 --auto-generate-sql --auto-generate-sql-load-type=mixed --auto-generate-sql-add-autoincrement --engine=myisam --number-of-queries=10 --debug-info</span></strong>

測试信息：

Benchmark

        Running for engine myisam

        Average number of seconds to run all queries: 0.473 seconds

        Minimum number of seconds to run all queries: 0.473 seconds

        Maximum number of seconds to run all queries: 0.473 seconds

        Number of clients running queries: 100

        Average number of queries per client: 0

User time 0.04, System time 0.14

Maximum resident set size 6732, Integral resident set size 0

Non-physical pagefaults 1333, Physical pagefaults 0, Swaps 0

Blocks in 0 out 0, Messages in 0 out 0, Signals 0

Voluntary context switches 2389, Involuntary context switches 48

备注：本次測试以100个并发线程、測试1次。自己主动生成SQL測试脚本、读、写、更新混合測试、自增长字段、測试引擎为myisam、共执行10次查询。输出cpu资源信息

案例二：

[root@mysrv ~]# mysqlslap -h127.0.0.1 -P3306 -u root -poracle --concurrency=100 --iterations=1 --create-schema='prod' --query='select * from t1;' --number-of-queries=10
-e innodb --debug-info 

測试信息：

Benchmark

        Running for engine innodb

        Average number of seconds to run all queries: 1.455 seconds

        Minimum number of seconds to run all queries: 1.455 seconds

        Maximum number of seconds to run all queries: 1.455 seconds

        Number of clients running queries: 100

        Average number of queries per client: 0

User time 0.03, System time 0.12

Maximum resident set size 5420, Integral resident set size 0

Non-physical pagefaults 1273, Physical pagefaults 0, Swaps 0

Blocks in 0 out 0, Messages in 0 out 0, Signals 0

Voluntary context switches 536, Involuntary context switches 151

备注：使用mysqlslap指定sql语句进行測试

案例三：

[root@mysrv ~]# mysqlslap --concurrency=50,100,200 --iterations=20 --number-int-cols=4 --number-char-cols=35 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=read
--engine=myisam,innodb --number-of-queries=200 --verbose --socket=/tmp/mysql.sock -uroot -poracle

測试信息：

Benchmark

        Running for engine myisam

        Average number of seconds to run all queries: 1.521 seconds

        Minimum number of seconds to run all queries: 1.397 seconds

        Maximum number of seconds to run all queries: 2.092 seconds

        Number of clients running queries: 50

        Average number of queries per client: 4

Benchmark

        Running for engine myisam

        Average number of seconds to run all queries: 1.465 seconds

        Minimum number of seconds to run all queries: 1.279 seconds

        Maximum number of seconds to run all queries: 1.996 seconds

        Number of clients running queries: 100

        Average number of queries per client: 2

Benchmark

        Running for engine myisam

        Average number of seconds to run all queries: 1.367 seconds

        Minimum number of seconds to run all queries: 1.260 seconds

        Maximum number of seconds to run all queries: 1.576 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: 1.198 seconds

        Minimum number of seconds to run all queries: 1.084 seconds

        Maximum number of seconds to run all queries: 1.301 seconds

        Number of clients running queries: 50

        Average number of queries per client: 4

Benchmark

        Running for engine innodb

        Average number of seconds to run all queries: 1.423 seconds

        Minimum number of seconds to run all queries: 1.238 seconds

        Maximum number of seconds to run all queries: 1.761 seconds

        Number of clients running queries: 100

        Average number of queries per client: 2

Benchmark

        Running for engine innodb

        Average number of seconds to run all queries: 1.389 seconds

        Minimum number of seconds to run all queries: 1.268 seconds

        Maximum number of seconds to run all queries: 1.653 seconds

        Number of clients running queries: 200

        Average number of queries per client: 1

备注：

   #系统脚本測试，添加int型 4列char 型35列，測试2种引擎myisam,innodb读的性能。分别用50，100。200个client对server进行測试总共200个查询语句 运行20次查询