如何检查内核中是否启用了SMP? [英] How to check whether SMP is enabled or disabled in the kernel?

问题描述

我想知道如何在运行的机器上检查内核是否配置为SMP?当然，我可以查看内核 .config 文件并进行搜索.但是，问题是说我没有源代码，如何检查SMP配置?是否有任何 proc 文件进行检查?

I was wondering how can I check on my running machine, whether the kernel is configured for SMP or not? Of course, I can look into the kernel .config file and can search for it. But, the question is let's say I don't have a source code, how will I check the SMP configuration? Is there any proc file to check it?

以下内容表明我没有多核:

The following says that I have no multi-cores:

#cat /proc/cpuinfo

processor               : 1
cpu model               : Broadcom BMIPS5000 V1.1  FPU V0.1
BogoMIPS                : 651.26
cpu MHz                 : 1305.018
wait instruction        : yes
microsecond timers      : yes
tlb_entries             : 64
extra interrupt vector  : yes
hardware watchpoint     : no
ASEs implemented        :
shadow register sets    : 1
kscratch registers      : 0
core                    : 0
VCED exceptions         : not available
VCEI exceptions         : not available

uname -a 的输出说:

Linux 136.170.193.3 3.3.8-2.4 #2 SMP Fri Dec 13 07:11:03 EST 2013 mips GNU/Linux

这里有点令人困惑.评论中的某人建议我检查 uname -a .我不确定结果是否可靠.我是否可以假设使用 uname -a 生成的关键字SMP，将内核配置为SMP?

A bit confusing here. Someone on the comments suggested me to check uname -a . I am not sure whether the results are reliable or not. Can I assume that with the keyword SMP produced by uname -a, the kernel is configured as SMP?

推荐答案

我可以假设用uname -a产生的关键字SMP，内核是配置为SMP?

Can I assume that with the keyword SMP produced by uname -a, the kernel is configured as SMP?

是的.uname返回的版本字符串是在编译内核时生成的.

Yes. The version string returned by uname is generated when kernel is compiled.

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