Re: bhyve: how to keep the host from starving the guest

On Mon, Jun 26, 2023 at 7:50 AM Vitaliy Gusev <gusev.vitaliy@gmail.com> wrote:
>
> Hi Aryeh,
>
> Have you wired a guest memory with bhyve's -S option?
>
> -S          Wire guest memory
>
>
> Anyway, OS does not have another choice than kill a process to free some memory
> when RAM+swap is fully used (assume kernel already scanned Inactive memory).
>
> As recommendation:
>
> Look at an another memory consumers like ZFS, another processes
> Increase swap
> Tune vm.overcommit sysctl. See tuning(7) for details.
>
>
> So in short, there is no good way to run applications that fully use 10 GB
> memory on a systems with just 1 GB RAM + 1 GB swap. You should have
> enough resources to do that.

You completely mischaracterize the situation I want to reserve 16GB or
24GB for the VM and the other 8 are for the host (and the host
alone).. I have already used the -S flag since it is required by
passthru

Also the memory is successfully reserved accoring to top(1) but yet it
still runs out (i.e. it shows 19GB are wired).
--
Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org