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What is an application binary interface (ABI)?

...de, when you "call" that function, what you're really doing is causing the CPU to jump to the address of that label and continue executing there. In preparation for the jump, the compiler must do a bunch of important stuff. The calling convention is like a checklist that the compiler follows to do...
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创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

创建增量同步Oracle物化视图问题我们采用Oracle的物化视图增量刷新机制定时将数据库A上的某个表的数据同步到另一个数据库B上。我们常用的最简单的实现步骤是这样。首先在数...我们采用Oracle的物化视图增量刷新机制定时将数...
https://www.tsingfun.com/it/tech/1059.html 

浅谈TCP优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的处理能力,那么接收方会出现丢包。为了避免出现此类问题,流量控制要求数据传输双方在每次交互时声明各自的接收窗口「rwnd」大小,用来表示自己最大能保存多少数据,这主要是针对接收方而言的,通俗点儿说就是让发...
https://www.tsingfun.com/it/tech/1381.html 

一体化的Linux系统性能和使用活动监控工具–Sysstat - 更多技术 - 清泛网 -...

...: Sysstat的功能列表: iostat:统计并报告你的设备的CPU状态和I/O状态数据。 mpstat:监控和显示关于CPU的细节信息。 pidstat:统计正在运行的进程/任务的CPU、内存等信息。 sar:保存和报告不同资源(CPU、内存、输入输出、网...
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Getting a list of values from a list of dicts

...key values from list of dictionaries in python? Ex: data = [{'obj1':[{'cpu_percentage':'15%','ram':3,'memory_percentage':'66%'}]}, {'obj2': [{'cpu_percentage':'0','ram':4,'memory_percentage':'35%'}]}] for d in data: for key,value in d.items(): z ={key: {'cpu_percentage': d['cpu_per...
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当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...掉防火墙改为直连,WINDOWS的IP改为 172.16.110.70/24 没有任何问题。故判断是防火墙的问题。 防火墙策略全开 允许UNTRUNT 到TRUNT ANY 结果还是不行。 开始百度 第一个说法:需要更改windows的注册表 \\HKEY_LOCAL_MACHINE\SOFTW...
https://www.tsingfun.com/it/tech/896.html 

Android微信智能心跳方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...哥开始构思第一个方案,我们开始想用统计的方法来解决问题,当我们拿着第一个方案和Ray讨论时,发现不能优雅应对Ray的所有提问:1、测试环境的准确性,失败到底是因为网络的特性导致还是因为用户当前的环境变化导致的...
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What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?

... Microsoft has a blog entry What AnyCPU Really Means As Of .NET 4.5 and Visual Studio 11: In .NET 4.5 and Visual Studio 11 the cheese has been moved. The default for most .NET projects is again AnyCPU, but there is more than one meaning to AnyCPU now. T...
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普通码农和CTO之间的差距,就是这7点了 - 杂谈 - 清泛网 - 专注C/C++及内核技术

...让大家多思考(希望我达到这个目的了)。 解决完一个问题后我们要经常“回头看看”,我们要学习的不是“解决具体问题的办法”而不是“解决问题的方法”。很多朋友通过网络或者同事帮助解决完一个问题之后就没有然后...
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pycharm running way slow

...ly proper way to fix your specific performance problem is by capturing the CPU profiler snapshot as described in this document and sending it to PyCharm support team, either by submitting a ticket or directly into the issue tracker. After the CPU snapshot is analyzed, PyCharm team will work on a fi...