VirtualBox

Changes between Initial Version and Version 1 of Ticket #20763, comment 7


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Timestamp:
May 17, 2022 7:19:23 AM (3 years ago)
Author:
anhoefler

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  • Ticket #20763, comment 7

    initial v1  
    33
    44I tried in the meantime two further things:
    5 * set 'VBoxManage setextradata "<VM Name>" "VBoxInternal/NEM/UseRing0Runloop" 0'
    6 -- this changed the behavior to a worse state. The VM started somewhat but either locked up completely pretty soon (or became so slow that I couldn't distinguish from a locked state)
    7 * increased the number of virtual CPUs to 6 (the physical number on my machine)
    8 -- this did not solve the soft-lockup but improved the situation somewhat in that the locked CPUs get woken up more regularly by activity on other CPUs (I guess). It lowers the probability that all CPUs lock up at the same time and bring the whole VM to a halt.
     5- set 'VBoxManage setextradata "<VM Name>" "VBoxInternal/NEM/UseRing0Runloop" 0'
     6this changed the behavior to a worse state. The VM started somewhat but either locked up completely pretty soon (or became so slow that I couldn't distinguish from a locked state)
     7- increased the number of virtual CPUs to 6 (the physical number on my machine)
     8this did not solve the soft-lockup but improved the situation somewhat in that the locked CPUs get woken up more regularly by activity on other CPUs (I guess). It lowers the probability that all CPUs lock up at the same time and bring the whole VM to a halt.
    99
    1010So unfortunately no change for now for us.

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