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驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网 - ...
...每个创建的进程和退出的每个进程调整分数。在具有快速生成进程的系统中，这可能是一项艰巨的任务。为了让 OOM Killer政策的实施更容易， Evgeniy Polyakov 提出了一种基于名称的解决方案。使用他的补丁，最先死亡的进程是运行...
驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网 - ...
...每个创建的进程和退出的每个进程调整分数。在具有快速生成进程的系统中，这可能是一项艰巨的任务。为了让 OOM Killer政策的实施更容易， Evgeniy Polyakov 提出了一种基于名称的解决方案。使用他的补丁，最先死亡的进程是运行...
Does pandas iterrows have performance issues?
...ly at the start of the iteration; this savings alone is one of the biggest wins.
Better caching: Iterating over a C array is cache-friendly and thus very fast. A pandas DataFrame is a "column-oriented table", which means that each column is really just an array. So the native actions you can perform...
String concatenation: concat() vs “+” operator
...thod should be faster. However, with more strings the StringBuilder method wins, at least in terms of performance.
The source code of String and StringBuilder (and its package-private base class) is available in src.zip of the Sun JDK. You can see that you are building up a char array (resizing as ...
What are the pros and cons of performing calculations in sql vs. in your application
shopkeeper table has following fields:
13 Answers
13
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CentOS+Nginx+PHP+MySQL详细配置(图解) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的。在之前，很多朋友都搭建过Apache+PHP，Apache+PHP编译后生成的是模块文件，而Nginx+PHP需要PHP生成可执行文件才可以，所以要利用fastcgi技术来实现N ginx与PHP的整合，这个只要我们安装是启用FastCGI即可。此次我们安装PHP不仅使用...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...iplication, where my answer has a section on why rcpps is not a throughput win anymore. (Or a latency win), and numbers on divide throughput/latency.
– Peter Cordes
Apr 25 '18 at 11:38
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How to get error message when ifstream open fails
...lying functions may not set errno at all (direct system calls on Linux, or Win32). This doesn't work on many real world implementations.
– strcat
Mar 12 '14 at 6:40
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驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网移动...
...每个创建的进程和退出的每个进程调整分数。在具有快速生成进程的系统中，这可能是一项艰巨的任务。为了让 OOM Killer政策的实施更容易， Evgeniy Polyakov 提出了一种基于名称的解决方案。使用他的补丁，最先死亡的进程是运行...
驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网移动...
...每个创建的进程和退出的每个进程调整分数。在具有快速生成进程的系统中，这可能是一项艰巨的任务。为了让 OOM Killer政策的实施更容易， Evgeniy Polyakov 提出了一种基于名称的解决方案。使用他的补丁，最先死亡的进程是运行...