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横屏布局和手机不太一样 - App应用开发 - 清泛IT社区，为创新赋能！
...手机适应开发的界面布局要通过水平/垂直布局进行相对定位，部分尺寸需要进行动态计算。
有个布局案例可以参考一下：https://bbs.tsingfun.com/thread-1982-1-1.html
Tracking CPU and Memory usage per process
I suspect that one of my applications eats more CPU cycles than I want it to. The problem is - it happens in bursts, and just looking at the task manager doesn't help me as it shows immediate usage only.
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Approximate cost to access various caches and main memory?
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Numbers everyone should know
0.5 ns - CPU L1 dCACHE reference
1 ns - speed-of-light (a photon) travel a 1 ft (30.5cm) distance
5 ns - CPU L1 iCACHE Branch mispredict
7 ns - CPU L2 CACHE reference
71 ns - CPU cro...
What Process is using all of my disk IO
If I use "top" I can see what CPU is busy and what process is using all of my CPU.
7 Answers
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一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术
...xp及早前的windows版本，external manifest会比embed manifest有更高的优先级，但对于windows server及后的版本，相反。
为什么我的manifest明明指明
name="Microsoft.VC80.DebugCRT" version="8.0.50608.0"，
但是用depends.exe工具却发现引用的是8.00.50727.42呢...
How to get current CPU and RAM usage in Python?
What's your preferred way of getting current system status (current CPU, RAM, free disk space, etc.) in Python? Bonus points for *nix and Windows platforms.
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PHP操作MongoDB时的整数问题及对策 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
PHP操作MongoDB时的整数问题及对策本文所说的整数问题，其实并不是MongoDB的问题，而是PHP驱动的问题：MongoDB本身有两种整数类型，分别是：32位整数和64位整数，但旧版的PHP...本文所说的整数问题，其实并不是MongoDB的问题，而是P...
What is the iPad user agent?
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Mozilla/5.0(iPad; U; CPU iPhone OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B314 Safari/531.21.10
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What is the difference between user and kernel modes in operating systems?
...and unrestricted
access to the underlying hardware. It
can execute any CPU instruction and
reference any memory address. Kernel
mode is generally reserved for the
lowest-level, most trusted functions
of the operating system. Crashes in
kernel mode are catastrophic; they
will halt the...
Is gettimeofday() guaranteed to be of microsecond resolution?
... for Intel Processors
If you're on Intel hardware, here's how to read the CPU real-time instruction counter. It will tell you the number of CPU cycles executed since the processor was booted. This is probably the finest-grained counter you can get for performance measurement.
Note that this is t...