1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 3
4 CPUS_ONLINE=$(lscpu --online -p=cpu|grep -v -e 4 CPUS_ONLINE=$(lscpu --online -p=cpu|grep -v -e '#')
5 #use last CPU for host. Why not the first? 5 #use last CPU for host. Why not the first?
6 #many devices tend to use cpu0 by default so 6 #many devices tend to use cpu0 by default so
7 #it tends to be busier 7 #it tends to be busier
8 HOST_AFFINITY=$(echo "${CPUS_ONLINE}"|tail -n 8 HOST_AFFINITY=$(echo "${CPUS_ONLINE}"|tail -n 1)
9 9
10 #run command on all cpus 10 #run command on all cpus
11 for cpu in $CPUS_ONLINE 11 for cpu in $CPUS_ONLINE
12 do 12 do
13 #Don't run guest and host on same CPU 13 #Don't run guest and host on same CPU
14 #It actually works ok if using signall 14 #It actually works ok if using signalling
15 if 15 if
16 (echo "$@" | grep -e "--sleep" 16 (echo "$@" | grep -e "--sleep" > /dev/null) || \
17 test $HOST_AFFINITY '! 17 test $HOST_AFFINITY '!=' $cpu
18 then 18 then
19 echo "GUEST AFFINITY $cpu" 19 echo "GUEST AFFINITY $cpu"
20 "$@" --host-affinity $HOST_AFF 20 "$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu
21 fi 21 fi
22 done 22 done
23 echo "NO GUEST AFFINITY" 23 echo "NO GUEST AFFINITY"
24 "$@" --host-affinity $HOST_AFFINITY 24 "$@" --host-affinity $HOST_AFFINITY
25 echo "NO AFFINITY" 25 echo "NO AFFINITY"
26 "$@" 26 "$@"
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