VirtualBox

Changes between Initial Version and Version 1 of Ticket #14944, comment 4


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Timestamp:
Dec 24, 2015 2:52:50 AM (8 years ago)
Author:
gv_user

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  • Ticket #14944, comment 4

    initial v1  
    1 I understand that this would be a large effort.  But for completeness of this ticket, I include this information since it would at some time be helpful to use 6 of my 8 logical cores in as optimal a manner as possible.  The only reason I use Ubuntu on VirtualBox is to run buildroot and Xilinx tools which are compute intensive and use multithreading.
    2 
    3 To be clear, the request is to change the code such that when using a 4 physical core / 8 logical core CPU (e.g. the i7-4790K) that the guest is setup as N CPUs x (2 threads per CPU).  Currently it gets setup as 2*N CPUs x (1 thread per CPU).  Here N is 1,2,3, or 4. 
    4 
    5 https://software.intel.com/en-us/articles/intel-64-architecture-processor-topology-enumeration/
    6 
    7 http://developer.amd.com/resources/documentation-articles/articles-whitepapers/processor-and-core-enumeration-using-cpuid/
    8 
    9 http://stackoverflow.com/questions/2901694/programatically-detect-number-of-physical-processors-cores-or-if-hyper-threading
     1You're right.  I was confused about this.

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