deploy.pl/startall.sh

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#!/bin/sh
#
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# Copyright (c) 2019-2021 Mischa Peters <mischa @ openbsd.amsterdam>
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#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
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SLEEP=240
CPU=$(($(sysctl -n hw.ncpuonline)-2))
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COUNTER=0
for i in $(vmctl show | sort | awk '/ - / {print $9}' | xargs); do
VMS[${COUNTER}]=${i}
COUNTER=$((${COUNTER}+1))
done
CYCLES=$((${#VMS[*]}/${CPU}+1))
echo "Starting ${#VMS[*]} VMs on ${CPU} CPUs in ${CYCLES} cycle(s), waiting ${SLEEP} seconds after each cycle."
COUNTER=0
for i in ${VMS[*]}; do
COUNTER=$((${COUNTER}+1))
vmctl start ${i}
if [ $COUNTER -eq $CPU ]; then
sleep ${SLEEP}
COUNTER=0
fi
done