大约有 37,000 项符合查询结果（耗时：0.0306秒） [XML]
关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...程来处理的 IO 模型，但是效率相对比较差，也很容易出问题，所以暂时不做介绍了）。在这些多路复用的模式中，异步阻塞/非阻塞模式的扩展性和性能最好。
引入阻塞/非阻塞,、同步/异步比喻很形象的一段话：
有A，B，C，D...
UIView Infinite 360 degree rotation animation?
...n the animation at each PI/2 angle (90 degrees) and a marginal increase in CPU usage over the chosen answer using CABasicAnimation. The CABasicAnimation method produces a flawlessly smooth animation.
– Arjun Mehta
Feb 28 '14 at 18:59
...
Round to at most 2 decimal places (only if necessary)
...JavaScript doesn't have home made floating point numbers; it relies on the CPU/FPU for that. A computer uses binary, and in binary, there isn't any numbers like 0.1, but a mere binary approximation for that. Why? For the same reason than 1/3 cannot be written in decimal: its value is 0.33333333... w...
List comprehension vs. lambda + filter
...enUlhaq this can be optimized to prime_cubes = [1] to save both memory and cpu cycles ;-)
– Dennis Krupenik
Mar 12 '18 at 10:21
7
...
Mac OSX Lion DNS lookup order [closed]
...ook into running your own local DNS resolver. There is a considerable disk/CPU hit from having to read /etc/hosts on every request, so it is in your best interest to keep that file very light.
One advantage of running something like dnsmasq locally (besides the significant performance boost) is tha...
Why is the Android emulator so slow? How can we speed up the Android emulator? [closed]
...TANT NOTE: Please first refer to the Intel list about VT to make sure your CPU supports Intel VT.
HAXM Speeds Up the Slow Android Emulator
HAXM stands for - "Intel Hardware Accelerated Execution Manager"
Currently, it supports only Intel® VT (Intel Virtualization Technology).
The Android emulat...
What are the -Xms and -Xmx parameters when starting JVM?
...Xss<size> set java thread stack size
-Xprof output cpu profiling data
-Xfuture enable strictest checks, anticipating future default
-Xrs reduce use of OS signals by Java/VM (see documentation)
-Xcheck:jni perform additional checks for JNI functions...
What's the state of the art in email validation for Rails?
...step to catch typos. I would do it with a simple regex, and not waste the CPU cycles on anything too complicated:
/\A[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+\z/
That was adapted from http://www.regular-expressions.info/email.html -- which you should read if you really want to know all the tra...
Reducing Django Memory Usage. Low hanging fruit?
...h I can't seem to find now unfortunately) showing the drastic reduction in cpu and memory usage after they switched to mod_wsgi on that high traffic site. Several of the django devs have switched. Seriously, it's a no-brainer :)
...
What is the relative performance difference of if/else versus switch statement in Java?
...re could be some performance gains, if the code is part of the performance CPU graph.
share
|
improve this answer
|
follow
|
...