http://www.jackxiang.com/index.php zh-cn http://www.jackxiang.com/post// jack <xdy108@126.com> Fri, 11 Jul 2008 09:04:21 +0000 http://www.jackxiang.com/post// 现在看一下这个压力测试工具mysqlslap.
关于他的选项手册上以及--help介绍的很详细。
我解释一下一些常用的选项。
这里要注意的几个选项：
--concurrency代表并发数量，多个可以用逗号隔开，当然你也可以用自己的分隔符隔开，这个时候要用到--delimiter开关。
--engines代表要测试的引擎，可以有多个，用分隔符隔开。
--iterations代表要运行这些测试多少次。
--auto-generate-sql 代表用系统自己生成的SQL脚本来测试。
--auto-generate-sql-load-type 代表要测试的是读还是写还是两者混合的（read,write,update,mixed）
--number-of-queries 代表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。比如倒数第二个结果2=200/100。
--debug-info 代表要额外输出CPU以及内存的相关信息。
--number-int-cols 代表示例表中的INTEGER类型的属性有几个。
--number-char-cols 意思同上。
--create-schema 代表自己定义的模式（在MySQL中也就是库）。
--query 代表自己的SQL脚本。
--only-print 如果只想打印看看SQL语句是什么，可以用这个选项。

现在来看一些我测试的例子。

1、用自带的SQL脚本来测试。
MySQL版本为5.1.23
[root@localhost ~]# mysqlslap --defaults-file=/usr/local/mysql-maria/my.cnf --concurrency=50,100,200 --iterations=1 --number-int-cols=4 --number-char-cols=35 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=mixed --engine=myisam,innodb --number-of-queries=200 --debug-info -uroot -p1 -S/tmp/mysql_3310.sock

Benchmark
        Running for engine myisam
        Average number of seconds to run all queries: 0.063 seconds
        Minimum number of seconds to run all queries: 0.063 seconds
        Maximum number of seconds to run all queries: 0.063 seconds
        Number of clients running queries: 50
        Average number of queries per client: 4

Benchmark
        Running for engine myisam
        Average number of seconds to run all queries: 0.070 seconds
        Minimum number of seconds to run all queries: 0.070 seconds
        Maximum number of seconds to run all queries: 0.070 seconds
        Number of clients running queries: 100
        Average number of queries per client: 2

Benchmark
        Running for engine myisam
        Average number of seconds to run all queries: 0.092 seconds
        Minimum number of seconds to run all queries: 0.092 seconds
        Maximum number of seconds to run all queries: 0.092 seconds
        Number of clients running queries: 200
        Average number of queries per client: 1

Benchmark
        Running for engine innodb
        Average number of seconds to run all queries: 0.115 seconds
        Minimum number of seconds to run all queries: 0.115 seconds
        Maximum number of seconds to run all queries: 0.115 seconds
        Number of clients running queries: 50
        Average number of queries per client: 4

Benchmark
        Running for engine innodb
        Average number of seconds to run all queries: 0.134 seconds
        Minimum number of seconds to run all queries: 0.134 seconds
        Maximum number of seconds to run all queries: 0.134 seconds
        Number of clients running queries: 100
        Average number of queries per client: 2

Benchmark
        Running for engine innodb
        Average number of seconds to run all queries: 0.192 seconds
        Minimum number of seconds to run all queries: 0.192 seconds
        Maximum number of seconds to run all queries: 0.192 seconds
        Number of clients running queries: 200
        Average number of queries per client: 1


User time 0.06, System time 0.15
Maximum resident set size 0, Integral resident set size 0
Non-physical pagefaults 5803, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 8173, Involuntary context switches 528


我来解释一下结果的含义。
拿每个引擎最后一个Benchmark示例。
对于INNODB引擎，200个客户端同时运行这些SQL语句平均要花0.192秒。相应的MYISAM为0.092秒。 ]]> http://www.jackxiang.com/post//#blogcomment <user@domain.com> Thu, 01 Jan 1970 00:00:00 +0000 http://www.jackxiang.com/post//#blogcomment