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社会化海量数据采集爬虫框架搭建 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...果能把账号和IP的访问策略控制好了，基本可以解决这个问题了。当然对方网站也会有运维会调整策略，说到底这是一个战争，躲在电脑屏幕后的敌我双方，爬虫必须要能感知到对方的反监控策略进行了调整，通知管理员及时处...
System.BadImageFormatException: Could not load file or assembly [duplicate]
...e in Visual Studio(compiler settings) the target from “X86 ” to “Any CPU”.
– Tim Schmelter
Oct 25 '12 at 15:07
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你真的了解熊市有多么可怕吗？ - 创意 - 清泛网 - 专注C/C++及内核技术
...巫见大巫了。大盘反弹在1700点后，横了一个月，一个冲高的假突破后，大盘再次杀跌，当时没有人再敢抄底了，因为谁也不敢想底在哪里，十几天下来，大盘已经到了1300，后来大盘出现了又一次的反弹，最后进入了最恐怖的阴...
Why wasn't PyPy included in standard Python?
...tten in C, which is traditionally the way Python applications have handled CPU-intensive tasks (see for instance the SciPy project).
The PyPy JIT compilation step itself costs CPU time -- it's only through repeated running of compiled code that it becomes faster overall. This means startup times ca...
Bash script to calculate time elapsed
....
%[p][l]R
The elapsed time in seconds.
%[p][l]U
The number of CPU seconds spent in user mode.
%[p][l]S
The number of CPU seconds spent in system mode.
%P
The CPU percentage, computed as (%U + %S) / %R.
The optional p is a digit specifying the precision, the number of frac...
What is the difference between a thread and a fiber?
.... This also means that the operating system can take advantage of multiple CPUs and CPU cores by running more than one thread at the same time and leaving it up to the developer to guard data access.
With fibers: the current execution path is only interrupted when the fiber yields execution (same n...
移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...是，devicePixelRatio在不同的浏览器中还存在些许的兼容性问题，所以我们现在还并不能完全信赖这个东西，具体的情况可以看下这篇文章。
devicePixelRatio的测试结果：
三、PPK的关于三个viewport的理论
ppk大神对于移动设备上...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
...sing the cl.exe compier with the /Zp option.
Usually it is easier for the CPU to access data that is a multiple of 4 (or 8), depending platform and also on the compiler.
So it is a matter of alignment basically.
You need to have good reasons to change it.
...
Measure execution time for a Java method [duplicate]
...ocess(if run locally it will list the java process).Go to sampler, monitor CPU, take a snapshot after metod finishes. and you can get time taken by each method in call tree. its buddled in jvm/jdk.
– arvin_v_s
Jun 21 '17 at 4:13
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How do I achieve the theoretical maximum of 4 FLOPs per cycle?
...erations (double precision) per cycle be achieved on a modern x86-64 Intel CPU?
4 Answers
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