90 lines
3.4 KiB
Bash
90 lines
3.4 KiB
Bash
#!/bin/sh
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#-------------------------------------------------------------------------+
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# Copyright (C) 2016 ramdaron (https://github.com/ramdaron)
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# Copyright (C) 2016 Matt Churchyard (churchers@gmail.com)
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# Copyright (C) 2023 LAYLO
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# All rights reserved
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted providing that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# set limits to virtual machine
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# this is the background process
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#
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rctl::set(){
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local _pcpu _rbps _wbps _riops _wiops
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local _pid _pri
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# get limit settings
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config::get "_pri" "priority"
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config::get "_pcpu" "limit_pcpu"
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config::get "_rbps" "limit_rbps"
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config::get "_wbps" "limit_wbps"
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config::get "_riops" "limit_riops"
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config::get "_wiops" "limit_wiops"
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# wait till bhyve starts and get pid
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sleep 1
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_pid=$(pgrep -fx "bhyve[: ].* ${_name}")
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[ -z "${_pid}" ] && return 1
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# check for a priority
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[ -n "${_pri}" ] && renice ${_pri} ${_pid} >/dev/null 2>&1
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# return if there are no limits
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[ -z "${_pcpu}${_rbps}${_wbps}${_riops}${_wiops}" ] && return 1
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# see if rctl works
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/usr/bin/rctl >/dev/null 2>&1
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[ $? -ne 0 ] && \
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util::log "guest" "${_name}" "RCTL support requested but RCTL not available" && return 1
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util::log "guest" "${_name}" "applying rctl limits"
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if [ -n "${_pcpu}" ]; then
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/usr/bin/rctl -a process:${_pid}:pcpu:deny=${_pcpu} >/dev/null 2>&1
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[ $? -eq 0 ] && util::log "guest" "${_name}" " pcpu=${_pcpu}"
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fi
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# at this point we can return if < FreeBSD 11
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[ ${VERSION_BSD} -lt 1100000 ] && return 0
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if [ -n "${_rbps}" ]; then
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/usr/bin/rctl -a process:${_pid}:readbps:throttle=${_rbps} >/dev/null 2>&1
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[ $? -eq 0 ] && util::log "guest" " readbps=${_rbps}"
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fi
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if [ -n "${_wbps}" ]; then
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/usr/bin/rctl -a process:${_pid}:writebps:throttle=${_wbps} >/dev/null 2>&1
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[ $? -eq 0 ] && util::log "guest" " writebps=${_wbps}"
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fi
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if [ -n "${_riops}" ]; then
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/usr/bin/rctl -a process:${_pid}:readiops:throttle=${_riops} >/dev/null 2>&1
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[ $? -eq 0 ] && util::log "guest" " readiops=${_riops}"
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fi
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if [ -n "${_wiops}" ]; then
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/usr/bin/rctl -a process:${_pid}:writeiops:throttle=${_wiops} >/dev/null 2>&1
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[ $? -eq 0 ] && util::log "guest" " writeiops=${_wiops}"
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fi
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}
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