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Virtual functions and performance - C++
...ourse cannot optimise based on what might happen at runtime, so prediction etc would have to be done by the CPU itself... but good C++ compilers (if instructed) go to great lengths to optimise functions and loops long before runtime.
– underscore_d
Apr 10 '16 a...
How to calculate the CPU usage of a process by PID in Linux from C?
I want to programmatically [in C] calculate CPU usage % for a given process ID in Linux.
12 Answers
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地图组件（高德地图） · App Inventor 2 中文网
...标。
此功能的可用性和准确性取决于用户是否启用了定位服务以及可用的位置提供商。
用户纬度
如果启用了显示用户位置，则返回用户的纬度。
用户经度
如果启用了显示用户位置，则返回用户的经度。
可见性
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Technically, why are processes in Erlang more efficient than OS threads?
...he entire CPU state (normal, SSE and FPU registers, address space mapping, etc.).
Erlang processes use dynamically allocated stacks, which start very small and grow as necessary. This permits the spawning of many thousands — even millions — of Erlang processes without sucking up all available RA...
Using ThreadPool.QueueUserWorkItem in ASP.NET in a high traffic scenario
...hich is why for example asynchronous pages exist in ASP.NET. If I want to fetch a result from a remote web service to display, I'm not going to do that via MSMQ. In this case, I'm writing to a log using a remote post. It doesn't fit the problem to write a Windows Service, nor hook up MSMQ for that (...
谁在争抢UGC - 资讯 - 清泛网 - 专注C/C++及内核技术
...播客识别出侵权视频，保护原创版权。
由于网络媒体的定位及其受众的广泛性，目前采用UGC模式的网站不约而同地将娱乐作为其业务的主导方向。而从媒体的本质来说，真正能与门户网站进行竞争的仍然是与民生密切相关的新...
Go > operators
...ed to be) the same. The reason for this is that emitting exactly 1 SHL/SHR/etc instruction to implement the shift operator is the best thing that an optimizing C/C++ compiler can do when the context does not tell it anything about 'x' and 'y'. And, if the compiler knows for a fact that the code has ...
Storing time-series data, relational or non?
... on varying metrics such as CPU utilisation, disk utilisation, temperature etc. at (probably) 5 minute intervals using SNMP. The ultimate goal is to provide visualisations to a user of the system in the form of time-series graphs.
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ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...zmq_recv函数返回错误信息 ，并使用zmq_strerror函数进行错误定位
if(zmq_recv(pSock, szMsg, sizeof(szMsg), 0) < 0)
{
printf("error = %s\n", zmq_strerror(errno));
continue;
}
printf("received message : %s\n", szMsg);
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How do I measure separate CPU core usage for a process?
Is there any way to measure a specific process CPU usage by cores?
8 Answers
8
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