#!/bin/bash

#脚本中输入yes会进行重启，输入no会进行恢复

##全局变量
#--------------------------------#
yum -y install numactl;
chan=48; #网卡通道数设定
option=$1 #$1为yes则进行重启操作，否则不会重启
cpu_num=`grep -c "processor" /proc/cpuinfo`; #CPU核数
numa_num=`numactl -H|grep cpus|wc -l`
#numa_num=4
per_cpu=$(($cpu_num/$numa_num))
#--------------------------------#



#硬件参数
##网卡调优
#关闭中断均衡
systemctl stop irqbalance.service
systemctl disable irqbalance.service
#改变网卡通道数，ring buffer调为最大，中断聚合参数全设为0
count=0;
for net0 in `ifconfig |grep mtu|awk -F ':' '{print $1}'|grep -v lo|grep -v bond|grep -v vir|sed -n '1,2p'`
do
	intid=`ethtool -i $net0|grep bus-info|awk -F ': ' '{print $2}'`
	i3=`cat /proc/interrupts | grep $intid|grep mlx5_comp | awk -F ':' '{print $1}'|awk 'NR==1'`
	if [ ! -n "$i3" ]; then
		i3=`cat /proc/interrupts | grep $net0 | awk -F ':' '{print $1}'|awk 'NR==1'`
	fi
	echo "int id =$i3"
	all=`expr $i3 + $chan`
	for((i=$i3; i<all;i++))
	do 
		cpu_id=$(($i-$i3+$per_cpu*$count))
		echo $cpu_id > /proc/irq/${i}/smp_affinity_list;
	done 


	for((i=$i3; i<all;i++))
	do 
		cat /proc/irq/${i}/smp_affinity_list;
	done 

done