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Why do you program in assembly? [closed]
...ve run much slower, which is costly when your problem requires millions of CPU hours on expensive machines.
If you are wondering why this is important, check out the article in Science that came out of this work. Using Lattice QCD, these guys calculated the mass of a proton from first principles, ...
In C, do braces act as a stack frame?
... local variables may not use any stack space at all: they could be held in CPU registers or in some other auxiliary storage location, or be optimized away entirely.
So, the d array, in theory, could consume memory for the entire function. However, the compiler may optimize it away, or share its me...
How to use PHP OPCache?
... 9000 requests in 2.8 seconds to the apache server it maxes out at 90-100% cpu for 70-80 seconds until it catches up with all the requests.
Total time taken: 76085 milliseconds(76 seconds)
With opcache enabled
With opcache enabled it runs at 25-30% cpu time for about 25 seconds and never passes ...
快速开发CSS的利器LESS 系列教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...标签样式当中，但是如果出现在多个地方，就很容易出现问题，在书写的时候就会变得很麻烦。为了便于这个操作，我们可以将一个样式放在另一个样式当中。如：
.text-overflow {
display:block;/*内联对象需加*/
word-break:keep-...
C++ performance vs. Java/C#
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The compile for specific CPU optimizations are usually overrated. Just take a program in C++ and compile with optimization for pentium PRO and run on a pentium 4. Then recompile with optimize for pentium 4. I passed long afternoons doing it wit...
What is the JavaScript version of sleep()?
... to a specific script, page, or function without the engine clobbering the CPU and freezing the app like a maniac. It's 2015 and you shouldn't be able to crash an entire web browser with while(1). We have Flash for things like that.
– Beejor
Sep 12 '15 at 5:10
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Python multiprocessing PicklingError: Can't pickle
... a database, writing to filesystems) then your code is likely not bound by CPU and won't take much of a hit. In fact I've found when writing HTTP/HTTPS benchmarks that the threaded model used here has less overhead and delays, as the overhead from creating new processes is much higher than the overh...
Why shouldn't all functions be async by default?
...on, an many of your routines will be async. However, when you start doing CPU bound work, in general, making things async is actually not good - it's hiding the fact that you're using CPU cycles under an API that appears to be asynchronous, but is really not necessarily truly asynchronous.
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Fastest way to remove first char in a String
...member that when you are testing performance this way, you are affected by CPU caching, so you need to do that on the random strings, that you pre-populated an array (list) with, and randomly select the element of that array (list).
– ajeh
Sep 9 '16 at 19:51
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iPhone App 开发第一步：从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...！ 最近才开始研究iPhone开发，由于没有Mac，采用的是AMD CPU + Win7 + VMWare之后安装Mac OS X Snow Le... iCc原创，转载请注明出处！
最近才开始研究iPhone开发，由于没有Mac，采用的是AMD CPU + Win7 + VMWare之后安装Mac OS X Snow Leopard，再升级...