使用sysbench进行mysql的oltp测试,一般的测试在sysbench中在tests/db中提供了一个oltp.lua脚本可以进行oltp的压力测试。 但不能完全模拟自己实际业务的压力测试,不同的业务,数据结构,数据量都是不一样的,为了更接近实际业务的读写压力测试,就得自己写l
使用sysbench进行mysql的oltp测试,一般的测试在sysbench中在tests/db中提供了一个oltp.lua脚本可以进行oltp的压力测试。
但不能完全模拟自己实际业务的压力测试,不同的业务,数据结构,数据量都是不一样的,为了更接近实际业务的读写压力测试,就得自己写lua脚本,然后通过sysbench进行压力测试。
写这个lua脚本很简单,只需要会写lua脚本就可以了。
1、首先收集实际业务的访问数据库的sql; 2、准备一台恢复好的备份库(从线上导一个) 3、将收集的sql写在lua脚本里(具体如何写,后面举个例子) 4、通过sysbench的--test参数和--mysql-db参数进行测试(这里就不需要prepare了,直接run就行)
举个小例子
模拟实际业务环境:
CREATE TABLE `t1` ( `id` int(10) NOT NULL AUTO_INCREMENT, `name` varchar(50) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=10101 DEFAULT CHARSET=utf8
插入模拟的际业务数据:
delimiter $$ create procedure add_data(in maxnum int) begin declare i int default 0; declare s varchar(500); while(i<maxnum do select concat into s insert t1 set i="i+1;" end while delimiter call add_data> <p>准备lua脚本:[root@sever3 db]# cat test.lua</p> <pre class="brush:php;toolbar:false">function thread_init(thread_id) -- set_vars() db_connect() end function event(thread_id) local table_name local rs table_name = "t1" db_query("begin") for i=1, 10000 do rs = db_query("SELECT name FROM ".. table_name .." WHERE id=" .. i) end end
set_vars()? 如果需要使用更多的参数,需要执行这个,前面需要引用下common.lua
db_connect()?? 是连接数据库的,这个是sysbench里的函数,不管那么多,直接用就行。
thread_init()? 第一个调用的lua函数
event(thread_id) ? 可以把sql逻辑写到这里, ? –num-threads多少个,就会同时调用多少个
然后进行压测就ok
[root@sever3 sysbench]# ./sysbench --mysql-socket=/data/mysql_3309/mysql.sock --test=tests/db/test.lua --mysql-user=root --num-threads=12 --report-interval=10 --rand-type=uniform --max-time=30 --max-requests=0 --percentile=99 --mysql-db=test run sysbench 0.5: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 12 Report intermediate results every 10 second(s) Random number generator seed is 0 and will be ignored Threads started! [ 10s] threads: 12, tps: 0.00, reads/s: 64131.41, writes/s: 0.00, response time: 3291.51ms (99%) [ 20s] threads: 12, tps: 0.00, reads/s: 79980.83, writes/s: 0.00, response time: 1947.61ms (99%) [ 30s] threads: 12, tps: 0.00, reads/s: 78354.15, writes/s: 0.00, response time: 2418.21ms (99%) OLTP test statistics: queries performed: read: 2280000 write: 0 other: 228 total: 2280228 transactions: 0 (0.00 per sec.) deadlocks: 0 (0.00 per sec.) read/write requests: 2280000 (72705.35 per sec.) other operations: 228 (7.27 per sec.) General statistics: total time: 31.3595s total number of events: 228 total time taken by event execution: 368.0393s response time: min: 985.61ms avg: 1614.21ms max: 3756.13ms approx. 99 percentile: 3289.54ms Threads fairness: events (avg/stddev): 19.0000/3.83 execution time (avg/stddev): 30.6699/0.42
sysbench具体的使用、结果解读可以参数下
http://imysql.com/2014/10/17/sysbench-full-user-manual.shtml
原文地址:sysbench自定义lua脚本实现实际的业务逻辑压力测试, 感谢原作者分享。

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