linux 分析中断

 

设置中断

cat /proc/interrupts |grep eth0|awk -F":" '{print $1}' |awk '{print "cat /proc/irq/"$1"/smp_affinity_list"}' 

cat /proc/interrupts |grep eth1|awk -F":" '{print $1}'| awk '{print"echo 0-15,16-31 > /proc/irq/"$1"/smp_affinity_list"}'

systemctl stop irqbalance.service

 

设置rps

echo "ffffffff,ffffffff" > /sys/class/net/ipsec0/queues/rx-0/rps_cpus

echo "ffffffff,ffffffff" > /sys/class/net/ipsec1/queues/rx-0/rps_cpus

ls -1 /sys/class/net/eth1/queues/ |grep -v tx |awk '{print"cat /sys/class/net/eth1/queues/"$1"/rps_cpus"}' |bash |sort -n |uniq

ls -1 /sys/class/net/eth1/queues/ |grep -v tx |awk '{print"echo ffffffff,00000000 > /sys/class/net/eth1/queues/"$1"/rps_cpus"}' 

 

 

关闭中断合并

ethtool -C eth0 adaptive-rx off adaptive-tx off

ethtool -C eth0 rx-usecs 0 rx-frames 0

 

分析中断

watch -d "mpstat -I SUM -P ALL 1 1 |grep Average |awk '{print \$2\": \"\$3}' |tr '\n' '\t'"

watch -d mpstat -I ALL -P 0 1 1