VirtualBox

Changes between Initial Version and Version 1 of Ticket #12117, comment 1


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Timestamp:
Sep 16, 2013 3:33:30 PM (11 years ago)
Author:
chuck-h

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  • Ticket #12117, comment 1

    initial v1  
    1 This information may weaken the multi-processor synchronization conjecture. The effect is definitely worse with multi-cpu's in the guest, but transfers still hang with single-cpu guest configuration:
     1More information relevant to the multi-processor synchronization conjecture. The effect is definitely worse with multi-cpu's in the guest, but transfers still hang with single-cpu guest configuration:
    22
    331-CPU guest VM: ~ 6 minutes to fail
     
    2525chuck@rosman:~/ohci-dbg$
    2626}}}
     27
     28Can we expect the DevOHCI code to be executing in the host environment, and the ohci-hcd code to be executing in the guest environment? IIRC, the VM gets a dedicated CPU in a multiprocessor host environment, thus they will always be executing on different CPUs. Having 4 instead of 1 guest CPUs apparently increases the stress level.
     29

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