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Is the sizeof(some pointer) always equal to four?
... @SangeethSaravanaraj: Note that theoretically the native word size of the CPU and what the compiler decides 'int' is can be arbitrarily different, it's just it was convention for 'int' to be the native word size before x86-64 came around, where it's long to ease backwards compat.
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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...lers like clang choose not to use reciprocal + Newton for scalar on recent CPUs, because it's usually not faster. In most loops, div isn't the only operation, so total uop throughput is often the bottleneck even when there's a divps or divss. See Floating point division vs floating point multiplic...
Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。
你可以以如下的方式表示数字，0x开头的16进制和C是很像的。
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num = 1024
num = 3.0
num = 3.1416
num = 314.16e-2
num = 0.31416E1
num = ...
Fastest way to flatten / un-flatten nested JSON objects
...ntrol in JS (i.e. you're at the mercy of the browser) 2) if you want to do CPU intensive work then JS is not the best language. Consider using C instead. There are JSON libraries for C
– Aadit M Shah
Oct 6 '13 at 16:51
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Download File Using Javascript/jQuery
...ry at least as large as the file being downloaded and/or other interesting CPU side effects.
fetch('https://jsonplaceholder.typicode.com/todos/1')
.then(resp => resp.blob())
.then(blob => {
const url = window.URL.createObjectURL(blob);
const a = document.createElement('a'...
CruiseControl [.Net] vs TeamCity for continuous integration?
...a certain number of projects you'll find that CC.Net is taking most of the CPU for your build machine.
Of course, it's open source, so you can fix it... And, I'm sure it's fine for small numbers of non-interdependent projects.
For more details of the problems I had and some patches for CC.Net see ...
JOIN queries vs multiple queries
...enchmark a server under load, however, in most cases, joins will take more CPU time vs PK queries, and often causes more network overhead as well.
– mindplay.dk
May 8 '15 at 19:06
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What is a deadlock?
...resource A and having a long process. Thread B waiting to lock resource A. CPU time usage : 20%, can you consider that a deadlock situation?
– rickyProgrammer
Sep 28 '17 at 16:37
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How do I limit the number of results returned from grep?
...finds the first 10 lines it looks like he continues thinking and "using my cpu" and just not printint it is it correcT? thansk
– Jas
Feb 16 '11 at 6:36
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Dictionary vs Object - which is more efficient and why?
What is more efficient in Python in terms of memory usage and CPU consumption - Dictionary or Object?
8 Answers
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