bcを使いますので、yum/aptなどで導入しておく必要があります。
CPUコア数は自動的に判定し、適切(全てのコアへ分散する)な設定を行います。

/etc/init.d/rpsxps

#!/bin/sh

# chkconfig: - 85 15

### BEGIN INIT INFO
# Provides:          rpsxps
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: rpsxps 
# Description:       rpsxps
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

### Environment variables
action="$1"
prog=$(basename $0)
fullbit=32

# Feel free to change any of the following variables for your app:
start(){
  echo -n $"Starting $prog: "
  for if in `ls /sys/class/net| grep -v lo`; do
    I=0
    for q in `ls /sys/class/net/${if}/queues/tx-*/xps_cpus`;do
      echo 2^${I}|bc > ${q}
      I=$(( ${I}+1 ))
    done
    for q in `ls -dF /sys/class/net/${if}/queues/rx-*`;do
      n=$(cat /proc/cpuinfo | grep ^processor|wc -l)
      if [ ${n} -ge ${fullbit} ]; then n=${fullbit}; fi
      echo "obase=16;2^${n}-1"| bc > ${q}/rps_cpus
      echo 4096 > ${q}/rps_flow_cnt
    done
  done

  echo 32768 > /proc/sys/net/core/rps_sock_flow_entries
  echo
}

stop(){
  echo
}

case $action in
start)
  start
  ;;
stop)
  stop
  ;;
*)
  echo >&2 "Usage: $0 <start|stop>"
  exit 1
  ;;
esac
exit 0```