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Diffstat (limited to 'tools/virtio/ringtest/run-on-all.sh')
| -rwxr-xr-x | tools/virtio/ringtest/run-on-all.sh | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/virtio/ringtest/run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh new file mode 100755 index 0000000000..dcc3ea758f --- /dev/null +++ b/tools/virtio/ringtest/run-on-all.sh @@ -0,0 +1,26 @@ +#!/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 $HOST_AFFINITY +echo "NO AFFINITY" +"$@" |