Find the answer to your Linux question:
Results 1 to 4 of 4
I ran a dual Intel Xeon X5680 on a recent kernel and in procinfo it shows up as 4 cores/siblings per chip for a total of 8 cpus. This is ...
Enjoy an ad free experience by logging in. Not a member yet? Register.
  1. #1
    Just Joined!
    Join Date
    Aug 2010
    Posts
    5

    Intel 6 core Xeon X5680 on Linux


    I ran a dual Intel Xeon X5680 on a recent kernel and in procinfo it shows up as 4 cores/siblings per chip for a total of 8 cpus.

    This is a surprise since the 5680 has 6 cores per chip, and 2 threads per core.

    In contrast on another box with 4 core/2 thread Xeon X5500's procinfo shows 4 cores, 8 siblings per chip for a total 16 cpus.

    Any idea whats going on here?

  2. #2
    Linux Engineer Segfault's Avatar
    Join Date
    Jun 2008
    Location
    Acadiana
    Posts
    877
    The number of CPUs supported by I given kernel can be set in kernel configuration. If it's set to four - four cores will show up, and so on.

  3. #3
    Linux Guru Rubberman's Avatar
    Join Date
    Apr 2009
    Location
    I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
    Posts
    11,408
    It also depends upon how your BIOS is configured. It may not have hyperthreading turned on, etc.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  4. #4
    Just Joined!
    Join Date
    Aug 2010
    Posts
    5
    My mistake, I was testing with the live 32 bit cd. With a 64 bit kernel I get the full 24 cpu's.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •