On 15/02/2018 05:40, Rodney W. Grimes wrote:
> [ Charset UTF-8 unsupported, converting... ]
>> On 14/02/2018 10:18, Peter Grehan wrote:
>> Be sure not to pass the -S option to bhyve as it wires the guest memory.
>> This was seen recently as sysutils/chyves uses it by default.
> This should be evaluated, if you do not pass -S you run into the
> possible performance impact of swapping guest memory, which does
> infact allow you more over commit, but at a pretty large
> performance penality.
The original question specified having 5 guests with 8G each on a host
with 32G, so overcommitting ram was expected, wiring each guest in this
setup will cause panics not swapping.
> You need swap space if you are going to not pass -S and over commit,
> if you do not have enough swap space for the over commit your system
> runs out of swap and usually ends up killing random processes, and
> random usually means the most important things you are running!
The host has 64G swap setup.
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