开发学院数据库MySQL MyISAM引擎和Heap引擎执行速度的性能测试 阅读

MyISAM引擎和Heap引擎执行速度的性能测试

 2008-10-17 11:12:25 来源:WEB开发网   
核心提示: 查询数据: 表里分表有:200000条记录,两个表数据一致 [直接select,MyISAM引擎和Heap引擎执行速度的性能测试(2),10000次,每次取100条记录]Heap engine select 10000 times, 100 record used time: 12.122

查询数据:

表里分表有:200000条记录,两个表数据一致

[直接select,10000次,每次取100条记录]
Heap engine select 10000 times, 100 record used time: 12.122506141663
MyISAM engine select 10000 times, 100 record used time: 19.512896060944
[直接select,1000次,每次取10000条记录]
Heap engine select 1000 times, 10000 record used time: 111.54126811028
MyISAM engine select 1000 record used time: 116.79438710213
[增加where条件,1000次,每次取10000条记录]
Heap engine select 1000 times, 10000 record used time: 111.52102303505
MyISAM engine select 1000 times, 10000 record used time: 117.68481087685
[where条件,10000次,每次从1000条起,取1000条记录]
Heap engine select 10000 times, 1000 record used time: 124.28988695145
MyISAM engine select 10000 times, 1000 record used time: 139.82107305527
[where条件增加like,10000次,每次从1000条起,取1000条记录]
Heap engine select 10000 times, 1000 record used time: 145.43780493736
MyISAM engine select 10000 times, 1000 record used time: 163.56296992302
[where条件增加索引,10000次,每次从1000条起,取1000条记录]
-- 建立索引 (在SQLyob下执行)
ALTER TABLE tbl_heap ADD INDEX idx_name (name);
ALTER TABLE tbl_isam ADD INDEX idx_name (name);
Heap engine alter table add index used time: 2.078
MyISAM engine alter table add index used time: 13.516
Heap engine select 10000 times, 1000 record used time: 153.48922395706
MyISAM engine select 10000 times, 1000 record used time: 239.86818814278
PS: 不合适的索引还不如不要。。。-_-#
[SQLyog下进行count操作]
Heap engine select count used time: 4.53
MyISAM engine select count used time: 3.28
[SQLyob下进行select操作]
速度都很快,都在1秒一下,不论是1000条记录,还是200000条记录,个人猜测可能不准确

Tags:MyISAM 引擎 Heap

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