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