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英语单词:flight; fly

赏育
2023-12-01

简介 flight

这个flight的意思是在飞行,飞行这个行为导致的一个结果是,已经从起始地离开,还未到目的地。中间这一段路程上的飞机处于飞行状态(in flight),不受地面的控制,不与地面有任何联系,机长才是临时的权力中心。
用在计算机知识的时候,意味着,不需要太多的人为干预,运行时间还长;或者正在执行。所以还是在做比喻,或者类似的类比。

示例1

2.3.1. SystemTap Flight Recorder Mode,自动记录模式
SystemTap’s flight recorder mode allows you to run a SystemTap script for long periods of time and just
focus on recent output. The flight recorder mode limits the amount of output generated.
There are two variations of the flight recorder mode: in-memory and file mode. In both cases, the
SystemTap script runs as a background process.

示例2

https://www.intel.com/content/www/us/en/develop/documentation/vtune-help/top/reference/cpu-metrics-reference.html
To streamline memory operations in the pipeline, a load can avoid waiting for memory if a prior store, still in flight, is writing the data that the load wants to read (a ‘store forwarding’ process).
即使store还在继续,load已经可以开始。

简介fly

《Linux Kernel Development》Page-266: Filesystems that are not disk-based generate the superblock on-the-fly and store it in memory.
on the fly
在飞行中, 不工作, 闲混;
这里偏重的是不落到实处,不是实际的磁盘媒介;而是存于内存中的文件系统。

实例

https://stackoverflow.com/questions/231767/what-does-the-yield-keyword-do-in-python
这里的意思是不存到内存,相对于“飞”的参照物是内存(地面)。

Generators are iterators, a kind of iterable you can only iterate over once. Generators do not store all the values in memory, they generate the values on the fly:
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