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BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...绪，这就要求用户进程不停的去询问，从而引入不必要的CPU资源浪费。其中目前JAVA的NIO就属于同步非阻塞IO。
异步阻塞IO：此种方式下是指应用发起一个IO操作以后，不等待内核IO操作的完成，等内核完成IO操作以后会通知应用...
Two inline-block, width 50% elements wrap to second line [duplicate]
...radicate from dynamic situations without a post-processor which costs more CPU-time for marginal bandwidth savings.
– Phil Ricketts
Jul 24 '12 at 17:35
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Zero-based month numbering [closed]
...gister, they XOR'ed the register with itself, which was slightly faster in CPU cycles. This meant that counting would start with 0 and would always be up to the length of elements, excluding the last one.
Also, the use of zero is also popular with pointer arithmetics where you would use one base po...
MySQL vs MySQLi when using PHP [closed]
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Which should we choose with less CPU and RAM?
– Mahdi Jazini
Oct 5 '15 at 6:36
1
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How to populate/instantiate a C# array with a single value?
...n due to cache thrashing. I'm fairly certain that due to the nature of the CPU cache, performing work in parallel on a single array will always be slower no matter what because the computer expects synchronous work and loads data appropriately.
– TernaryTopiary
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Is char signed or unsigned by default?
... the C standard makes no real distinction between compilers, platforms and CPU architectures. It just lumps them all together under "implementation".
– plugwash
Nov 23 '16 at 18:48
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How to paste text to end of every line? Sublime 2
...s a good answer, but for very large line counts, it can be quite alot more CPU intensive than using find & replace.
– Ceilingfish
Jun 5 '13 at 9:53
2
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Write applications in C or C++ for Android? [closed]
...s list. Google envisage android running on a variety of different devices (CPUs, displays, etc). The best way to enable development is therefore to use (portable) managed code that targets the Dalvik VM. For this reason, the Android SDK doesn't support C/C++.
BUT, take a look at this page:
Andr...
Easy way to concatenate two byte arrays
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Whether it's wasting cpu and memory depends on how often you do the operation. If it's a billion times a second - sure, optimize it. Otherwise, readability and maintainability might be the winning considerations.
– vikingste...
How to determine total number of open/active connections in ms sql server 2005
...5/win 2003 Application occasionally becomes very unresponsive, the memory/cpu usage does not spike. If i try to open any new connection from sql management studio, then the it just hangs at the open connection dialog box.
how to deterime the total number of active connections ms sql server 2005
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