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performance tune in mapping

原创 Linux操作系统 作者:ashleywzl 时间:2011-07-14 19:51:04 0 删除 编辑

Complete the following steps to evaluate expression performance:

Time the session with the original expressions.
Copy the mapping and replace half of the complex expressions with a constant.
Run and time the edited session.
Make another copy of the mapping and replace the other half of the complex expressions with a constant.
Run and time the edited session.

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/25676270/viewspace-702224/,如需转载,请注明出处,否则将追究法律责任。

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