1、ubuntu安装支持perf工具
sudo apt install linux-tools-common
sudo apt install linux-oem-5.6-tools-common
sudo apt install linux-cloud-tools-5.4.0-42-generic
2、在LINUX上测量TLB未命中的命令
sudo perf stat -e dTLB-load-misses,iTLB-load-misses /bin/ls > /dev/null
Performance counter stats for '/bin/ls':
1,190 dTLB-load-misses
520 iTLB-load-misses
0.001478482 seconds time elapsed
0.001504000 seconds user
0.000000000 seconds sys
