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mysql之 mysql数据库压力测试工具(mysqlslap)
阅读量:2496 次
发布时间:2019-05-11

本文共 7499 字,大约阅读时间需要 24 分钟。

mysqlslap是从MySQL的5.1.4版开始就开始官方提供的压力测试工具。通过模拟多个并发客户端并发访问MySQL来执行压力测试,同时提供了较详细的SQL执行数据性能报告,并且能很好的对比多个存储引擎(MyISAM,InnoDB等)在相同环境下的相同并发压力下的性能差别。

mysqlslap官方文档: https://dev.mysql.com/doc/refman/5.6/en/mysqlslap.html

Table 4.14 mysqlslap Options

Format Description Introduced
Generate SQL statements automatically when they are not supplied in files or using command options  
Add AUTO_INCREMENT column to automatically generated tables  
Specify how many queries to generate automatically  
Add a GUID-based primary key to automatically generated tables  
Specify the test load type  
Specify how many secondary indexes to add to automatically generated tables  
How many different queries to generate for automatic tests.  
How many different queries to generate for --auto-generate-sql-write-number  
How many row inserts to perform on each thread  
How many statements to execute before committing.  
Compress all information sent between client and server  
Number of clients to simulate when issuing the SELECT statement  
File or string containing the statement to use for creating the table  
Schema in which to run the tests  
Generate output in comma-separated values format  
Write debugging log  
Print debugging information when program exits  
Print debugging information, memory, and CPU statistics when program exits  
Authentication plugin to use 5.6.2
Read named option file in addition to usual option files  
Read only named option file  
Option group suffix value  
Delimiter to use in SQL statements  
Detach (close and reopen) each connection after each N statements  
Enable cleartext authentication plugin 5.6.7
Storage engine to use for creating the table  
Display help message and exit  
Connect to MySQL server on given host  
Number of times to run the tests  
Read login path options from .mylogin.cnf 5.6.6
Read no option files  
Do not drop any schema created during the test run 5.6.3
Number of VARCHAR columns to use if --auto-generate-sql is specified  
Number of INT columns to use if --auto-generate-sql is specified  
Limit each client to approximately this number of queries  
Do not connect to databases. mysqlslap only prints what it would have done  
Password to use when connecting to server  
On Windows, connect to server using named pipe  
Directory where plugins are installed 5.6.2
TCP/IP port number to use for connection  
File or string containing the statement to execute after the tests have completed  
String to execute using system() after the tests have completed  
File or string containing the statement to execute before running the tests  
String to execute using system() before running the tests  
Print default options  
Connection protocol to use  
File or string containing the SELECT statement to use for retrieving data  
Do not send passwords to server in old (pre-4.1) format 5.6.17
The name of shared memory to use for shared-memory connections  
Silent mode  
For connections to localhost, the Unix socket file to use  
Enable secure connection  
Path of file that contains list of trusted SSL CAs  
Path of directory that contains trusted SSL CA certificates in PEM format  
Path of file that contains X509 certificate in PEM format  
List of permitted ciphers to use for connection encryption  
Path of file that contains certificate revocation lists 5.6.3
Path of directory that contains certificate revocation list files 5.6.3
Path of file that contains X509 key in PEM format  
Security state of connection to server 5.6.30
Verify server certificate Common Name value against host name used when connecting to server  
MySQL user name to use when connecting to server  
Verbose mode  
Display version information and exit  
参数参考表: --host=host_name, -h host_name  连接到的MySQL服务器的主机名(或IP地址),默认为本机localhost
--user=user_name, -u user_name  连接MySQL服务时用的用户名
--password[=password], -p[password]  连接MySQL服务时用的密码
--create-schema 代表自定义的测试库名称,测试的schema,MySQL中schema也就是database。
(没指定使用哪个数据库时,可能会遇到错误mysqlslap: Error when connecting to server: 1049 Unknown database 'mysqlslap')
--query=name,-q 使用自定义脚本执行测试(可以是SQL字符串或脚本),例如可以调用自定义的一个存储过程或者sql语句来执行测试。
--create 创建表所需的SQL(可以是SQL字符串或脚本) 
--concurrency=N, -c N 表示并发量,也就是模拟多少个客户端同时执行query。可指定多个值,以逗号或者--delimiter参数指定的值做为分隔符。例如:--concurrency=100,200,500(分别执行100、200、500个并发)。
--iterations=N, -i N   测试执行的迭代次数,代表要在不同的并发环境中,各自运行测试多少次;多次运行以便让结果更加准确。
--number-of-queries=N 总的测试查询次数(并发客户数×每客户查询次数)
--engine=engine_name, -e engine_name 代表要测试的引擎,可以有多个,用分隔符隔开。例如:--engine=myisam,innodb,memory。
--auto-generate-sql, -a 自动生成测试表和数据,表示用mysqlslap工具自己生成的SQL脚本来测试并发压力。
--auto-generate-sql-load-type=type 测试语句的类型。代表要测试的环境是读操作还是写操作还是两者混合的。取值包括:read (scan tables), write (insert into tables), key (read primary keys), update (update primary keys), or mixed (half inserts, half scanning selects). 默认值是:mixed.
--auto-generate-sql-add-auto-increment 代表对生成的表自动添加auto_increment列,从5.1.18版本开始支持。 
--number-char-cols=N, -x N 自动生成的测试表中包含多少个字符类型的列,默认1
--number-int-cols=N, -y N 自动生成的测试表中包含多少个数字类型的列,默认1
--commint=N 多少条DML后提交一次。
--compress, -C 如果服务器和客户端支持都压缩,则压缩信息传递。
--only-print 只打印测试语句而不实际执行。
--detach=N 执行N条语句后断开重连。
--debug-info, -T 打印内存和CPU的相关信息。
mysqlslap的运行有如下3个步骤:
1. 创建schema、table、test data 等 (在MySQL中,schema就是database);
2. 运行负载测试,可以使用多个并发客户端连接;
3. 测试环境清理(删除创建的数据、表等)。
案例:

[root@mysql ~]# mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --auto-generate-sql-add-autoincrement --number-char-cols=10 --number-int-cols=5 -poracle

Warning: Using a password on the command line interface can be insecure.
Benchmark
Average number of seconds to run all queries: 0.775 seconds
Minimum number of seconds to run all queries: 0.775 seconds
Maximum number of seconds to run all queries: 0.775 seconds
Number of clients running queries: 50
Average number of queries per client: 20

Benchmark

Average number of seconds to run all queries: 0.984 seconds
Minimum number of seconds to run all queries: 0.984 seconds
Maximum number of seconds to run all queries: 0.984 seconds
Number of clients running queries: 100
Average number of queries per client: 10

[root@mysql ~]# mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --auto-generate-sql-add-autoincrement --number-char-cols=10 --number-int-cols=5 --engine=myisam,innodb -poracle

Warning: Using a password on the command line interface can be insecure.
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.117 seconds
Minimum number of seconds to run all queries: 0.117 seconds
Maximum number of seconds to run all queries: 0.117 seconds
Number of clients running queries: 50
Average number of queries per client: 20

Benchmark

Running for engine myisam
Average number of seconds to run all queries: 0.129 seconds
Minimum number of seconds to run all queries: 0.129 seconds
Maximum number of seconds to run all queries: 0.129 seconds
Number of clients running queries: 100
Average number of queries per client: 10

Benchmark

Running for engine innodb
Average number of seconds to run all queries: 1.665 seconds
Minimum number of seconds to run all queries: 1.665 seconds
Maximum number of seconds to run all queries: 1.665 seconds
Number of clients running queries: 50
Average number of queries per client: 20

Benchmark

Running for engine innodb
Average number of seconds to run all queries: 1.480 seconds
Minimum number of seconds to run all queries: 1.480 seconds
Maximum number of seconds to run all queries: 1.480 seconds
Number of clients running queries: 100
Average number of queries per client: 10

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转载于:http://blog.itpub.net/31383567/viewspace-2140611/

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