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最大CPU使用率（允许的最大CPU使用率）

[英]Max CPU usage (max allowed CPU usage)

原文 2014-06-08 10:43:14 4 1 linux/ cpu/ hyperthreading

I have a quad core (with hyper threading Technology - HT) I'm running an application which takes 270% CPU (according to TOP command) 我有一个四核（带有超线程技术-HT），我正在运行一个占用270％CPU的应用程序（根据TOP命令）

What is the total available CPU usage? 总可用CPU使用率是多少？ (is it 400% or 800%?) （是400％还是800％？）
- I'm asking because according to Intel documentation, the HT can up the performance up to 30% cpu, so 800% seem to much, yeah?) 我问是因为根据英特尔文档，超线程可以将性能提高到30％的CPU，所以800％看起来很多，是吗？）
What is the relation between load averages and CPU usage? 平均负载与CPU使用率之间有什么关系？

1 个解决方案

1: 800. You have 8 cores visible to the OS - that they are not real cores (due to hyperthreading limitations) is not of concern. 1：800。您有8个对操作系统可见的核心-并不是真正的核心（由于超线程的限制）。

2: Ever bothered reading documentation? 2：曾经打扰过阅读文档吗？ Practically there is no relation between load average and CPU uage. 实际上，平均负载与CPU使用率之间没有关系。 Load average is "waiting processes" but that can mean they are waiting for IO, and the CPU may not be busy. 平均负载是“等待进程”，但这可能意味着它们正在等待IO，并且CPU可能不忙。