Linux Shell脚本查看NUMA信息

nova在nfv场景下会提供numa相关高级特性，这里提供一个脚本查看计算节点的numa相关信息。

#!/bin/bash
function get_nr_processor()
{
  grep '^processor' /proc/cpuinfo | wc -l
}
function get_nr_socket()
{
  grep 'physical id' /proc/cpuinfo | awk -f: '{
      print $2 | "sort -un"}' | wc -l
}
function get_nr_siblings()
{
  grep 'siblings' /proc/cpuinfo | awk -f: '{
      print $2 | "sort -un"}'
}
function get_nr_cores_of_socket()
{
  grep 'cpu cores' /proc/cpuinfo | awk -f: '{
      print $2 | "sort -un"}'
}
echo '===== cpu topology table ====='
echo
echo '+--------------+---------+-----------+'
echo '| processor id | core id | socket id |'
echo '+--------------+---------+-----------+'
while read line; do
  if [ -z "$line" ]; then
    printf '| %-12s | %-7s | %-9s |\n' $p_id $c_id $s_id
    echo '+--------------+---------+-----------+'
    continue
  fi
  if echo "$line" | grep -q "^processor"; then
    p_id=`echo "$line" | awk -f: '{print $2}' | tr -d ' '` 
  fi
  if echo "$line" | grep -q "^core id"; then
    c_id=`echo "$line" | awk -f: '{print $2}' | tr -d ' '` 
  fi
  if echo "$line" | grep -q "^physical id"; then
    s_id=`echo "$line" | awk -f: '{print $2}' | tr -d ' '` 
  fi
done < /proc/cpuinfo
echo
awk -f: '{ 
  if ($1 ~ /processor/) {
    gsub(/ /,"",$2);
    p_id=$2;
  } else if ($1 ~ /physical id/){
    gsub(/ /,"",$2);
    s_id=$2;
    arr[s_id]=arr[s_id] " " p_id
  }
} 
end{
  for (i in arr) 
    printf "socket %s:%s\n", i, arr[i];
}' /proc/cpuinfo
echo
echo '===== cpu info summary ====='
echo
nr_processor=`get_nr_processor`
echo "logical processors: $nr_processor"
nr_socket=`get_nr_socket`
echo "physical socket: $nr_socket"
nr_siblings=`get_nr_siblings`
echo "siblings in one socket: $nr_siblings"
nr_cores=`get_nr_cores_of_socket`
echo "cores in one socket: $nr_cores"
let nr_cores*=nr_socket
echo "cores in total: $nr_cores"
if [ "$nr_cores" = "$nr_processor" ]; then
  echo "hyper-threading: off"
else
  echo "hyper-threading: on"
fi
echo
echo '===== end ====='

查询结果示例：

===== cpu topology table =====
+--------------+---------+-----------+
| processor id | core id | socket id |
+--------------+---------+-----------+
| 0      | 0    | 1     |
+--------------+---------+-----------+
| 1      | 1    | 1     |
+--------------+---------+-----------+
| 2      | 9    | 1     |
+--------------+---------+-----------+
| 3      | 10   | 1     |
+--------------+---------+-----------+
| 4      | 0    | 0     |
+--------------+---------+-----------+
| 5      | 1    | 0     |
+--------------+---------+-----------+
| 6      | 9    | 0     |
+--------------+---------+-----------+
| 7      | 10   | 0     |
+--------------+---------+-----------+
| 8      | 0    | 1     |
+--------------+---------+-----------+
| 9      | 1    | 1     |
+--------------+---------+-----------+
| 10      | 9    | 1     |
+--------------+---------+-----------+
| 11      | 10   | 1     |
+--------------+---------+-----------+
| 12      | 0    | 0     |
+--------------+---------+-----------+
| 13      | 1    | 0     |
+--------------+---------+-----------+
| 14      | 9    | 0     |
+--------------+---------+-----------+
| 15      | 10   | 0     |
+--------------+---------+-----------+
socket 0: 4 5 6 7 12 13 14 15
socket 1: 0 1 2 3 8 9 10 11
===== cpu info summary =====
logical processors: 16
physical socket: 2
siblings in one socket: 8
cores in one socket: 4
cores in total: 8
hyper-threading: on
===== end =====