Rarely executed and almost empty if statement drastically reduces performance in C++

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Rarely executed and almost empty if statement drastically reduces performance in C++

Question: Editor's clarification: When this was originally posted, there were two issues: Test performance drops by a factor of three if seemingly inconsequential statement added Time taken to complete the test appears to vary randomly The second iss…

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看官方文档: http://www.postgresql.org/docs/current/static/sql-prepare.html PREPARE creates a prepared statement. A prepared statement is a server-side object that can be used to optimize performance. When the PREPARE statement is executed, the specified s…

verilog behavioral modeling--branch statement

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MySQL 5.6 Reference Manual-14.6 InnoDB Table Management

14.6 InnoDB Table Management 14.6.1 Creating InnoDB Tables 14.6.2 Moving or Copying InnoDB Tables to Another Machine 14.6.3 Grouping DML Operations with Transactions 14.6.4 Converting Tables from MyISAM to InnoDB 14.6.5 AUTO_INCREMENT Handling in Inn…

Introduction to ASP.NET Web Programming Using the Razor Syntax (C#)

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在上一篇我们对CoreCLR中的JIT有了一个基础的了解, 这一篇我们将更详细分析JIT的实现. JIT的实现代码主要在https://github.com/dotnet/coreclr/tree/master/src/jit下, 要对一个的函数的JIT过程进行详细分析, 最好的办法是查看JitDump. 查看JitDump需要自己编译一个Debug版本的CoreCLR, windows可以看这里, linux可以看这里, 编译完以后定义环境变量COMPlus_JitDump=Main, Mai…