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Support for additional priority types. #529

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Support for additional priority types. #529

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901ae71
blah
wesnm Nov 1, 2023
705be0d
Priority Support
wesnm Nov 1, 2023
e01531f
Merge branch 'priority' of github.com:wesnm/vm-bhyve into priority
wesnm Nov 1, 2023
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10 changes: 9 additions & 1 deletion lib/vm-rctl
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Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,15 @@ rctl::set(){
[ -z "${_pid}" ] && return 1

# check for a priority
[ -n "${_pri}" ] && renice ${_pri} ${_pid} >/dev/null 2>&1
if [ -n "${_pri}" ]; then
if [ "${_pri%%[0-9]*}" = "i" ]; then
idprio ${_pri#i} -${_pid} >/dev/null 2>&1
elif [ "${_pri%%[0-9]*}" = "r" ]; then
rtprio ${_pri#r} -${_pid} >/dev/null 2>&1
else
renice ${_pri} ${_pid} >/dev/null 2>&1
fi
fi

# return if there are no limits
[ -z "${_pcpu}${_rbps}${_wbps}${_riops}${_wiops}" ] && return 1
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9 changes: 6 additions & 3 deletions vm.8
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Expand Up @@ -1546,10 +1546,13 @@ Note that although the guest is technically stopped when this process runs, call
will still consider the guest locked.
.It priority
Allows a priority to be set for a guest by using the
.Xr nice 8
facility. The default value is 0, and has a range from -20, which is the highest
.Xr nice 1
or
.Xr rtprio 1
facilities. The default value is 0, and has a range from -20, which is the highest
priority, to 20. A priority of 20 will cause the guest to only run when the host
system is idle.
system is idle. Priority values prefixed with "r" or "i" will set realtime or idletime
priorities, respectively.
.It limit_pcpu
Limit the bhyve process to the specified cpu percentage.
.Pp
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