tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/sh
2
3#use last CPU for host. Why not the first?
4#many devices tend to use cpu0 by default so
5#it tends to be busier
6HOST_AFFINITY=$(lscpu -p=cpu | tail -1)
7
8#run command on all cpus
9for cpu in $(seq 0 $HOST_AFFINITY)
10do
11 #Don't run guest and host on same CPU
12 #It actually works ok if using signalling
13 if
14 (echo "$@" | grep -e "--sleep" > /dev/null) || \
15 test $HOST_AFFINITY '!=' $cpu
16 then
17 echo "GUEST AFFINITY $cpu"
18 "$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu
19 fi
20done
21echo "NO GUEST AFFINITY"
22"$@" --host-affinity $HOST_AFFINITY
23echo "NO AFFINITY"
24"$@"