用mysqlslap进行mysql压力测试
转载地址：http://my.oschina.net/javagg/blog/5060
mysqlslap是一个mysql官方提供的压力测试工具,通过模拟多个并发客户端访问mysql来执行测试，使用起来非常的简单。通过mysqlslap –help可以获得可用的选项。
下面我们就来看看一些比较重要的参数：
–defaults-file，配置文件存放位置–create-schema，测试的schema，MySQL中schema也就是database–concurrency，并发数–engines，测试引擎，可以有多个，用分隔符隔开。–iterations，迭代的实验次数–socket，socket，文件位置–debug-info，打印内存和CPU的信息–only-print，只打印测试语句而不实际执行–auto-generate-sql，自动产生测试SQL–auto-generate-sql-load-type，测试SQL的类型。类型有mixed，update，write，key，read。–number-of-queries，执行的SQL总数量–number-int-cols，表内int列的数量–number-char-cols，表内char列的数量–query=name，使用自定义脚本执行测试，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。
[root@localhost ~]# /usr/local/mysql/bin/mysqlslap –defaults-file=/etc/my.cnf –concurrency=200 –iterations=1 –number-int-cols=1 –auto-generate-sql –auto-generate-sql-load-type=write –engine=myisam,innodb –number-of-queries=200 -S/tmp/mysql.sock –debug-info -uroot -p123Benchmark Running for engine myisam Average number of seconds to run all queries: 0.087 seconds Minimum number of seconds to run all queries: 0.087 seconds Maximum number of seconds to run all queries: 0.087 seconds Number of clients running queries: 200 Average number of queries per client: 1Benchmark Running for engine innodb Average number of seconds to run all queries: 0.551 seconds Minimum number of seconds to run all queries: 0.551 seconds Maximum number of seconds to run all queries: 0.551 seconds Number of clients running queries: 200 Average number of queries per client: 1User time 0.03, System time 0.05Maximum resident set size 0, Integral resident set size 0Non-physical pagefaults 2826, Physical pagefaults 0, Swaps 0Blocks in 0 out 0, Messages in 0 out 0, Signals 0Voluntary context switches 3340, Involuntary context switches 96
–create-schema，指定数据库名称–query， 指定SQL语句，可以定位到某个包含SQL的文件[root@localhost ~]# /usr/local/mysql/bin/mysqlslap –defaults-file=/etc/my.cnf –concurrency=50 –iterations=1 –create-schema=test –query=/root/test.sql -S/tmp/mysql.sock -uroot -p123Benchmark Average number of seconds to run all queries: 0.021 seconds Minimum number of seconds to run all queries: 0.021 seconds Maximum number of seconds to run all queries: 0.021 seconds Number of clients running queries: 50 Average number of queries per client: 1
