mysql测试工具 -> mysqlslap
一.简介
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。
测试时候会创建一个mysqlslap库,并创建一个t1表,进行增删改善。
二.例子
测试100个并发线程,测试次数5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 -uroot -p123456--concurrency=100 --iterations=5 --auto-generate-sql --auto-generate-sql-load-type=mixed --auto-generate-sql-add-autoincrement --engine=innodb --number-of-queries=5000
注释:
100并发测试一次,意思是模拟100个人或者链接同时往数据库里进行写,更新,这么做五次操作。后面查则进行5000次。
类似于模拟一个论坛,当前有100个人在线上,其中平均每个人编写5个帖子,查询50次(5000/100)。
返回如下:
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: 0.223 seconds #最小 Maximum number of seconds to run all queries: 0.421 seconds #最大 Number of clients running queries: 100 #100并发 Average number of queries per client:50 #平均每个并发50次查询。
建议:
将执行次数最好是30-50次以上,如果只是一次,那获取的值没有任何变化了,都是0.351这个平均值了。执行次数多后,可以模拟持续读写。
三.其它选项
--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
常用选项
--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,key,write,update和mixed(默认)
--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
--number-of-queries=N 总的测试查询次数(并发客户数×每客户查询次数)
--query=name,-q 使用自定义脚本执行测试,例如可以调用自定义的存储过程或者sql语句来执行测试
--create-schema 代表自定义的测试库名称,测试的schema,MySQL中schema也就是database
--commint=N 多少条DML后提交一次
--compress, -C 如服务器和客户端都支持压缩,则压缩信息
--concurrency=N, -c N 表示并发量,即模拟多少个客户端同时执行select;可指定多个值,以逗号或者--delimiter参数指定值做为分隔符
--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
--iterations=N, -i N 测试执行的迭代次数,代表要在不同并发环境下,各自运行测试多少次
--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
测试示例:
1)单线程测试 [root@centos7 ~]# mysqlslap -a -uroot -p Enter password: Benchmark Average number of seconds to run all queries: 0.004 seconds Minimum number of seconds to run all queries: 0.004 seconds Maximum number of seconds to run all queries: 0.004 seconds Number of clients running queries: 1 Average number of queries per client: 0 2)多线程测试,使用--concurrency来模拟并发连接 [root@centos7 ~]# mysqlslap -uroot -p -a -c 500 Enter password: Benchmark Average number of seconds to run all queries: 3.384 seconds Minimum number of seconds to run all queries: 3.384 seconds Maximum number of seconds to run all queries: 3.384 seconds Number of clients running queries: 500 Average number of queries per client: 0 3)同时测试不同的存储引擎的性能进行对比 [root@centos7 ~]# mysqlslap -uroot -p -a --concurrency=500 --number-of-queries 1000 --iterations=5 --engine=myisam,innodb --debug-info Enter password: Benchmark Running for engine myisam Average number of seconds to run all queries: 0.192 seconds Minimum number of seconds to run all queries: 0.187 seconds Maximum number of seconds to run all queries: 0.202 seconds Number of clients running queries: 500 Average number of queries per client: 2 Benchmark Running for engine innodb Average number of seconds to run all queries: 0.355 seconds Minimum number of seconds to run all queries: 0.350 seconds Maximum number of seconds to run all queries: 0.364 seconds Number of clients running queries: 500 Average number of queries per client: 2 User time 0.33, System time 0.58 Maximum resident set size 22892, Integral resident set size 0 Non-physical pagefaults 46012, Physical pagefaults 0, Swaps 0 Blocks in 0 out 0, Messages in 0 out 0, Signals 0 Voluntary context switches 31896, Involuntary context switches 0 4)执行一次测试,分别500和1000个并发,执行5000次总查询 [root@centos7 ~]# mysqlslap -uroot -p -a --concurrency=500,1000 --number-of-queries 5000 --debug-info Enter password: Benchmark Average number of seconds to run all queries: 3.378 seconds Minimum number of seconds to run all queries: 3.378 seconds Maximum number of seconds to run all queries: 3.378 seconds Number of clients running queries: 500 Average number of queries per client: 10 Benchmark Average number of seconds to run all queries: 3.101 seconds Minimum number of seconds to run all queries: 3.101 seconds Maximum number of seconds to run all queries: 3.101 seconds Number of clients running queries: 1000 Average number of queries per client: 5 User time 0.84, System time 0.64 Maximum resident set size 83068, Integral resident set size 0 Non-physical pagefaults 139977, Physical pagefaults 0, Swaps 0 Blocks in 0 out 0, Messages in 0 out 0, Signals 0 Voluntary context switches 31524, Involuntary context switches 3 5)迭代测试 [root@centos7 ~]# mysqlslap -uroot -p -a --concurrency=500 --number-of-queries 5000 --iterations=5 --debug-info Enter password: Benchmark Average number of seconds to run all queries: 3.307 seconds Minimum number of seconds to run all queries: 3.184 seconds Maximum number of seconds to run all queries: 3.421 seconds Number of clients running queries: 500 Average number of queries per client: 10 User time 2.18, System time 1.58 Maximum resident set size 74872, Integral resident set size 0 Non-physical pagefaults 327732, Physical pagefaults 0, Swaps 0 Blocks in 0 out 0, Messages in 0 out 0, Signals 0 Voluntary context switches 73904, Involuntary context switches 3