MySQLslap是MySQL(了解干货请戳:干货!超过500行的Mysql学习笔记)自带的基准测试工具,优点:查询数据,语法简单,灵活容易使用。

该工具可以模拟多个客户端同时并发的向服务器发出查询更新,给出了性能测试数据而且提供了多种引擎的性能比较。

msqlslap为mysql性能优化前后提供了直观的验证依据,建议系统运维和DBA人员应该掌握一些常见的压力测试工具,才能准确的掌握线上数据库支撑的用户流量上限及其抗压性等问题。

常用的选项

–concurrency

//并发数量,多个可以用逗号隔开

–engines

//要测试的引擎,可以有多个,用分隔符隔开,如–engines=myisam,innodb

–iterations

//要运行这些测试多少次

–auto-generate-sql

//用系统自己生成的SQL脚本来测试

–auto-generate-sql-load-type 

//要测试的是读还是写还是两者混合的(read,write,update,mixed)

–number-of-queries  

//总共要运行多少次查询。每个客户运行的查询数量可以用查询总数/并发数来计算

–debug-info  

//额外输出CPU以及内存的相关信息

–number-int-cols  

//创建测试表的int型字段数量

–number-char-cols    

//创建测试表的chat型字段数量

–create-schema  

//测试的database

–query 自己的SQL  

//脚本执行测试

–only-print   

//如果只想打印看看SQL语句是什么,可以用这个选项

实例1

说明:测试100个并发线程,测试次数1次,自动生成SQL测试脚本,读、写、更新混合测试,自增长字段,测试引擎为innodb,共运行5000次查询

#mysqlslap -h127.0.0.1 -uroot -p123456789 –concurrency=100 –iterations=1 –auto-generate-sql –auto-generate-sql-load-type=mixed –auto-generate-sql-add-autoincrement –engine=innodb –number-of-queries=5000

Benchmark

Running for engine innodb

Average number of seconds to run all queries: 0.351 seconds 

100个客户端(并发)同时运行这些SQL语句平均要花0.351秒

Minimum number of seconds to run all queries: 0.351 seconds

Maximum number of seconds to run all queries: 0.351 seconds

Number of clients running queries: 100   

总共100个客户端(并发)运行这些sql查询

Average number of queries per client:50

每个客户端(并发)平均运行50次查询(对应–concurrency=100,–number-of-queries=5000;5000/100=50)

实例2

#mysqlslap -h127.0.0.1 -uroot -p123456789 –concurrency=100,500,1000 –iterations=1 –auto-generate-sql –auto-generate-sql-load-type=mixed –auto-generate-sql-add-autoincrement –engine=innodb –number-of-queries=5000 –debug-info

Benchmark

Running for engine innodb

Average number of seconds to run all queries: 0.328 seconds

Minimum number of seconds to run all queries: 0.328 seconds

Maximum number of seconds to run all queries: 0.328 seconds

Number of clients running queries: 100

Average number of queries per client: 50

Benchmark

Running for engine innodb

Average number of seconds to run all queries: 0.358 seconds

Minimum number of seconds to run all queries: 0.358 seconds

Maximum number of seconds to run all queries: 0.358 seconds

Number of clients running queries: 500

Average number of queries per client: 10

Benchmark

Running for engine innodb

Average number of seconds to run all queries: 0.482 seconds

Minimum number of seconds to run all queries: 0.482 seconds

Maximum number of seconds to run all queries: 0.482 seconds

Number of clients running queries: 1000

Average number of queries per client: 5

User time 0.21, System time 0.78

Maximum resident set size 21520, Integral resident set size 0

Non-physical pagefaults 12332, Physical pagefaults 0, Swaps 0

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

Voluntary context switches 36771, Involuntary context switches 1396

实例3(自定义sql语句)

#mysqlslap -h127.0.0.1 -uroot -p123456789 –concurrency=100 –iterations=1 –create-schema=rudao –query=’select * from serverlist;’ –engine=innodb –number-of-queries=5000 –debug-info

Benchmark

Running for engine innodb

Average number of seconds to run all queries: 0.144 seconds

Minimum number of seconds to run all queries: 0.144 seconds

Maximum number of seconds to run all queries: 0.144 seconds

Number of clients running queries: 100

Average number of queries per client: 50

User time 0.05, System time 0.09

Maximum resident set size 6132, Integral resident set size 0

Non-physical pagefaults 2078, Physical pagefaults 0, Swaps 0

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

Voluntary context switches 6051, Involuntary context switches 90

实例4(指定sql脚本)

#mysqlslap -h127.0.0.1 -uroot -p123456789 –concurrency=100 –iterations=1 –create-schema=rudao –query=/tmp/query.sql –engine=innodb –number-of-queries=5000 –debug-info

Warning: Using a password on the command line interface can be insecure.

Benchmark

Running for engine innodb

Average number of seconds to run all queries: 0.157 seconds

Minimum number of seconds to run all queries: 0.157 seconds

Maximum number of seconds to run all queries: 0.157 seconds

Number of clients running queries: 100

Average number of queries per client: 50

User time 0.07, System time 0.08

Maximum resident set size 6152, Integral resident set size 0

Non-physical pagefaults 2107, Physical pagefaults 0, Swaps 0

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

Voluntary context switches 6076, Involuntary context switches 89

更多干货等你来戳:【干货】如何高效进行产品上线前的质量评估?

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