#!/bin/sh | |
# SPDX-License-Identifier: GPL-2.0 | |
CPUS_ONLINE=$(lscpu --online -p=cpu|grep -v -e '#') | |
#use last CPU for host. Why not the first? | |
#many devices tend to use cpu0 by default so | |
#it tends to be busier | |
HOST_AFFINITY=$(echo "${CPUS_ONLINE}"|tail -n 1) | |
#run command on all cpus | |
for cpu in $CPUS_ONLINE | |
do | |
#Don't run guest and host on same CPU | |
#It actually works ok if using signalling | |
if | |
(echo "$@" | grep -e "--sleep" > /dev/null) || \ | |
test $HOST_AFFINITY '!=' $cpu | |
then | |
echo "GUEST AFFINITY $cpu" | |
"$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu | |
fi | |
done | |
echo "NO GUEST AFFINITY" | |
"$@" --host-affinity $HOST_AFFINITY | |
echo "NO AFFINITY" | |
"$@" |