术语"CPU绑定"是什么意思?以及"I/O绑定"和"I/O绑定".意思是? [英] What do the terms "CPU bound" and "I/O bound" mean?

问题描述

"CPU绑定"和"I/O绑定"是什么意思?

What do the terms "CPU bound" and "I/O bound" mean?

推荐答案

这很直观:

如果CPU速度更快，程序运行速度会更快，即受CPU限制，即，程序大部分时间仅用于CPU(进行计算).一个计算π的新数字的程序.通常是受CPU限制的，只是计算数字而已.

A program is CPU bound if it would go faster if the CPU were faster, i.e. it spends the majority of its time simply using the CPU (doing calculations). A program that computes new digits of π will typically be CPU-bound, it's just crunching numbers.

如果I/O子系统更快，则程序运行得更快，则该程序受I/O约束.确切的I/O系统意味着什么，可能会有所不同.我通常将其与磁盘相关联，但是当然，一般而言，联网或通信也很常见.通过大文件查找某些数据的程序可能会成为I/O绑定，因为瓶颈是然后从磁盘读取数据(实际上，该示例如今可能已经过时，具有数百MB/s的速度).来自SSD).

A program is I/O bound if it would go faster if the I/O subsystem was faster. Which exact I/O system is meant can vary; I typically associate it with disk, but of course networking or communication in general is common too. A program that looks through a huge file for some data might become I/O bound, since the bottleneck is then the reading of the data from disk (actually, this example is perhaps kind of old-fashioned these days with hundreds of MB/s coming in from SSDs).

这篇关于术语"CPU绑定"是什么意思?以及"I/O绑定"和"I/O绑定".意思是?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！