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mysqlslap是mysql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

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