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Full Discussion: Question on /proc/cpuinfo
Operating Systems Linux Red Hat Question on /proc/cpuinfo Post 302605208 by shrshah64 on Wednesday 7th of March 2012 01:23:42 AM
Old 03-07-2012
Question on /proc/cpuinfo

Hi,

I wanted to understand what exactly /proc/cpuinfo shows?

We have a machine with following specification...

(2x) Intel Xeon 6-core processors

So, ideally it shouls have 12processors, but the output on /proc/cpuinfo shows 24 processors.

Can someone please explain how this is calculated.

Thanks!
 

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LSDEV(8)							Linux System Manual							  LSDEV(8)

NAME
lsdev - display information about installed hardware SYNOPSIS
lsdev DESCRIPTION
lsdev gathers information about your computer's installed hardware from the interrupts, ioports and dma files in the /proc directory, thus giving you a quick overview of which hardware uses what I/O addresses and what IRQ and DMA channels. OPTIONS
None. FILES
/proc/interrupts IRQ channels. /proc/ioports I/O memory addresses. /proc/dma DMA channels. BUGS
lsdev can't always figure out which lines in the three examined files refer to one and the same device, because these files sometimes use different names for the same piece of hardware. For example, in some kernels the keyboard is referred to as `kbd' in /proc/ioports and as `keyboard' in /proc/interrupts. This should be fixed in the kernel, not in lsdev (as has indeed happened for this particular example). The program does however try to match lines by stripping anything after a space or open parenthesis from the name, so that e.g. the `serial' lines from /proc/interrupts match the `serial(set)' lines from /proc/ioports. This attempt at DWIM might be considered a bug in itself. This program only shows the kernel's idea of what hardware is present, not what's actually physically available. SEE ALSO
procinfo(8). AUTHOR
Sander van Malssen <svm@kozmix.cistron.nl> 3rd Release 1998-05-31 LSDEV(8)
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