Ubuntu18.04之报错： perf not found for kernel 5.4.0-79

1.执行perf命令报错：

WARNING: perf not found for kernel 5.4.0-79

  You may need to install the following packages for this specific kernel:
    linux-tools-5.4.0-79-generic
    linux-cloud-tools-5.4.0-79-generic

  You may also want to install one of the following packages to keep up to date:
    linux-tools-generic
    linux-cloud-tools-generic

2.报错原因

linux系统无法找到linux-tools-5.4.0-79-generic的工具安装包

3.解决：可以使用其他版本替代即可

使用linux-tools-5.4.0-91-generic替代linux-tools-5.4.0-79-generic版本

安装：

# sudo apt install linux-tools-5.4.0-91-generic linux-cloud-tools-5.4.0-91-generic
# sudo apt install linux-tools-generic linux-cloud-tools-generic
 
 
perf命令位置
# cd /usr/lib/linux-tools/5.4.0-91-generic
 
# sudo rm /usr/bin/perf
 
# sudo ln -s /usr/lib/linux-tools/5.4.0-91-generic/perf /usr/local/bin/perf
# sudo perf top