RE: Wrong number of cpus detected/reported

From: David Schwartz (davids@webmaster.com)
Date: Tue Jun 10 2003 - 15:17:31 EST


> Hi,
>
> first of all please apologize me because I didn't subscribe the list. I
> really even don't know if this list is the appropriate place to have my
> question discussed but I didn't found any better one.
>
> I installed a RedHat 7.1 system on a 4 way 1.4 Gz Compaq DL580 server
> with kernel 2.4.2 and everything goes right. Because of some other
> prerequisite needs I had to upgrade the kernel to 2.4.9-34.
>
> After the upgrade the system is reporting that the machine has 8 cpu
> instead of 4. I have been looking for some kind of information on the
> Internet (www.google.com/linux) about that but I didn't have success.

        This is correct. The machine has 8 logical CPUs implemented inside 4
physical CPUs. For more information, search Intel's web pages about
'hyperthreading'.

        DS

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