作者: costaxu 原文链接
近来工作中用mysql较多,但其实自己对mysql性能并不十分了解。前阵子正好读到一篇写用mysqlslap压测mysql性能的文章,于是自己也尝试了一下mysqlslap并且得到一些数据和结论。把压测到的数据与大家分享,如有谬误之处请指正。
概述和测试环境
压测的目的是为了尽量模拟真实情况。测试的表都是由10个int型字段和10个字符串型字段组成。每个测试项目都测试了myisam和innodb两个引擎。测试的方法都是用两个线程并发,一共跑10000个请求。
压测的机器用的是自己的笔记本。CPU是Intel(R) Core(TM)2 Duo CPU P8400, 4G内存, SATA硬盘。
mysql服务器端和压测的客户端跑在同一台机器上。
用到的mysqlslap参数解释如下:
--concurrency=2 两个线程
--iterations=1 执行一次
--number-int-cols=10 10个int型字段
--number-char-cols=10 10个字符串字段
-a 等同于--auto-generate-sql
--auto-generate-sql-add-autoincrement 创建auto increment的主键
--auto-generate-sql-secondary-indexes=2 创建2列索引
--auto-generate-sql-guid-primary 创建guid作为主键
--number-of-queries=10000 所有并发线程的请求次数和
--auto-generate-sql-load-type=write/key/read/update/mixed 测试的query类型
--engine=myisam,innodb 存储引擎
写性能测试
写性能测试1,不开binlog, guid做主键, 无索引
测试命令:
1 |
mysqlslap --concurrency=2\ |
6 |
--auto-generate-sql-guid-primary\ |
7 |
--number-of-queries=10000\ |
8 |
--auto-generate-sql-load-type=write\ |
9 |
--engine=myisam,innodb\ |
结果:
02 |
Running for engine myisam |
03 |
Average number of seconds to run all queries: 6.110 seconds |
04 |
Minimum number of seconds to run all queries: 6.110 seconds |
05 |
Maximum number of seconds to run all queries: 6.110 seconds |
06 |
Number of clients running queries: 2 |
07 |
Average number of queries per client: 5000 |
10 |
Running for engine innodb |
11 |
Average number of seconds to run all queries: 10.291 seconds |
12 |
Minimum number of seconds to run all queries: 10.291 seconds |
13 |
Maximum number of seconds to run all queries: 10.291 seconds |
14 |
Number of clients running queries: 2 |
15 |
Average number of queries per client: 5000 |
用myisam每秒处理1639次。
用innodb每秒处理971次。
真实环境中一般会用binlog做数据备份与同步,所以性能会有所下降,有binlog的情况请继续看后面的实验。
写性能测试2, 开binlog, guid做主键, 无索引
测试命令与“写性能测试1”相同,
结果如下:
02 |
Running for engine myisam |
03 |
Average number of seconds to run all queries: 14.809 seconds |
04 |
Minimum number of seconds to run all queries: 14.809 seconds |
05 |
Maximum number of seconds to run all queries: 14.809 seconds |
06 |
Number of clients running queries: 2 |
07 |
Average number of queries per client: 5000 |
10 |
Running for engine innodb |
11 |
Average number of seconds to run all queries: 26.721 seconds |
12 |
Minimum number of seconds to run all queries: 26.721 seconds |
13 |
Maximum number of seconds to run all queries: 26.721 seconds |
14 |
Number of clients running queries: 2 |
15 |
Average number of queries per client: 5000 |
myisam每秒处理675次
innodb每秒处理374次
写性能测试3, 开binlog, guid做主键, 有索引
现实情况中,有索引的情况较多。采用 --auto-generate-sql-secondary-indexes=2 创建两列索引。
命令如下:
01 |
mysqlslap --concurrency=2\ |
04 |
--number-char-cols=10\ |
06 |
--auto-generate-sql-guid-primary\ |
07 |
--auto-generate-sql-secondary-indexes=2\ |
08 |
--number-of-queries=10000\ |
09 |
--auto-generate-sql-load-type=write\ |
10 |
--engine=myisam,innodb\ |
结果如下:
02 |
Running for engine myisam |
03 |
Average number of seconds to run all queries: 16.693 seconds |
04 |
Minimum number of seconds to run all queries: 16.693 seconds |
05 |
Maximum number of seconds to run all queries: 16.693 seconds |
06 |
Number of clients running queries: 2 |
07 |
Average number of queries per client: 5000 |
10 |
Running for engine innodb |
11 |
Average number of seconds to run all queries: 30.418 seconds |
12 |
Minimum number of seconds to run all queries: 30.418 seconds |
13 |
Maximum number of seconds to run all queries: 30.418 seconds |
14 |
Number of clients running queries: 2 |
15 |
Average number of queries per client: 5000 |
myisam每秒处理599次。
innodb每秒处理329次。
写性能测试4,开binglog,auto increment主键,有索引
命令如下:
01 |
mysqlslap --concurrency=2\ |
04 |
--number-char-cols=10\ |
06 |
--auto-generate-sql-add-autoincrement\ |
07 |
--auto-generate-sql-secondary-indexes=2\ |
08 |
--number-of-queries=10000\ |
09 |
--auto-generate-sql-load-type=write\ |
10 |
--engine=myisam,innodb\ |
结果如下:
02 |
Running for engine myisam |
03 |
Average number of seconds to run all queries: 16.785 seconds |
04 |
Minimum number of seconds to run all queries: 16.785 seconds |
05 |
Maximum number of seconds to run all queries: 16.785 seconds |
06 |
Number of clients running queries: 2 |
07 |
Average number of queries per client: 5000 |
10 |
Running for engine innodb |
11 |
Average number of seconds to run all queries: 28.809 seconds |
12 |
Minimum number of seconds to run all queries: 28.809 seconds |
13 |
Maximum number of seconds to run all queries: 28.809 seconds |
14 |
Number of clients running queries: 2 |
15 |
Average number of queries per client: 5000 |
myisam每秒处理595次。
innodb每秒处理347次。
读性能测试
在真实的情况中,我们最主要的读操作其实就是用主键去查找表中的一行。 我主要是对这种行为进行测试。所以采用的load-type = key ,而不是read。 read是对全表进行读取,可是实际上这种情况很少出现。
读性能测试1,guid主键
命令如下:
01 |
mysqlslap --concurrency=2\ |
04 |
--number-char-cols=10\ |
06 |
--auto-generate-sql-guid-primary\ |
07 |
--auto-generate-sql-unique-query-number=10000\ |
08 |
--auto-generate-sql-load-type=key\ |
09 |
--number-of-queries=10000\ |
10 |
--engine=myisam,innodb\ |
结果如下:
02 |
Running for engine myisam |
03 |
Average number of seconds to run all queries: 4.215 seconds |
04 |
Minimum number of seconds to run all queries: 4.215 seconds |
05 |
Maximum number of seconds to run all queries: 4.215 seconds |
06 |
Number of clients running queries: 2 |
07 |
Average number of queries per client: 5000 |
10 |
Running for engine innodb |
11 |
Average number of seconds to run all queries: 3.917 seconds |
12 |
Minimum number of seconds to run all queries: 3.917 seconds |
13 |
Maximum number of seconds to run all queries: 3.917 seconds |
14 |
Number of clients running queries: 2 |
15 |
Average number of queries per client: 5000 |
myisam每秒处理2372次
innodb每秒处理2553次
读性能测试2,auto increment主键
命令如下
01 |
mysqlslap --concurrency=1\ |
04 |
--number-char-cols=10\ |
06 |
--auto-generate-sql-add-autoincrement\ |
07 |
--auto-generate-sql-unique-query-number=10000\ |
08 |
--auto-generate-sql-load-type=key\ |
09 |
--number-of-queries=10000\ |
10 |
--engine=myisam,innodb\ |
结果如下:
02 |
Running for engine myisam |
03 |
Average number of seconds to run all queries: 4.555 seconds |
04 |
Minimum number of seconds to run all queries: 4.555 seconds |
05 |
Maximum number of seconds to run all queries: 4.555 seconds |
06 |
Number of clients running queries: 1 |
07 |
Average number of queries per client: 10000 |
10 |
Running for engine innodb |
11 |
Average number of seconds to run all queries: 4.402 seconds |
12 |
Minimum number of seconds to run all queries: 4.402 seconds |
13 |
Maximum number of seconds to run all queries: 4.402 seconds |
14 |
Number of clients running queries: 1 |
15 |
Average number of queries per client: 10000 |
myisam每秒处理2195次。
innodb每秒处理2273次。
实验结果
项目 |
myisam每秒吞吐量 |
innodb每秒吞吐量 |
写性能测试1,不开binlog, guid主键, 无索引
|
1639 |
971 |
写性能测试2,开binlog,guid主键,无索引
|
675 |
374 |
写性能测试3, 开binlog, guid做主键, 有索引
|
599 |
329 |
写性能测试4,开binglog,auto increment主键,有索引
|
595 |
347 |
读性能测试1,guid主键
|
2372 |
2553 |
读性能测试2,auto increment主键
|
2195 |
2273 |
结论
1 在开启了binlog后, mysql写性能下降60%
2 myisam与innodb相比,写的速度更快(快80%), 读的速度差不多。
时间:2013-02-14 10:08
来源:oschina
作者:costaxu
原文链接