V2EX processor-bound

Processor-bound

Definition / 释义

processor-bound(也常说 CPU-bound):指某个程序/任务的性能主要受处理器(CPU)计算能力限制,而不是受磁盘 I/O、网络、内存带宽等限制。通常表现为 CPU 使用率高、加更多 CPU 核心或优化算法能明显提速。(在部分语境下也可指“被处理器绑定/固定在某个处理器上”,但更常见含义是“计算受限”。)

Pronunciation / 发音

/prsesr band/

Examples / 例句

This simulation is processor-bound, so upgrading the CPU helps more than buying a faster disk.
这个仿真是计算受限的,所以升级 CPU 比买更快的硬盘更有用。

Although the system has plenty of memory, the image-processing pipeline is still processor-bound because each frame requires heavy computation.
尽管系统内存很充足,但图像处理流水线仍然是计算受限的,因为每一帧都需要大量运算。

Etymology / 词源

processor(处理器) + bound(受……限制的/与……绑定的)构成的复合形容词。此类结构在计算机领域很常见,用来描述“瓶颈在何处”,类似 I/O-bound(I/O 受限)、memory-bound(内存/带宽受限)

Related Words / 相关词

Notable Works / 著作例证

  • Computer Systems: A Programmer’s Perspective(Bryant & O’Hallaron)在性能分析语境中常讨论计算受限(CPU/processor-bound)与 I/O 受限的区别。
  • Operating System Concepts(Silberschatz 等)在调度与系统性能章节中常用“CPU/processor-bound”对比 “I/O-bound”。
  • Computer Architecture: A Quantitative Approach(Hennessy & Patterson)在性能瓶颈与工作负载分类讨论中常涉及“计算受限/内存受限”等术语。
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