内核编译添加 PERF选项判断是否开启PEBS

news2026/3/17 17:20:38

1.安装perf需要的插件sudo apt update sudo apt install elfutils libelf-dev libdw-dev libunwind-dev libslang2-dev systemtap-sdt-dev python3-dev perl-base libperl-dev binutils-dev flex bison -y sudo apt install libcap-dev libnuma-dev libbabeltrace-ctf-dev libpfm4-dev -y sudo apt install libtraceevent-dev -y2.进入**/linux-6.6.10/tools/perf目录执行以下命令make -j8 make install3.将编译好的perf安装到系统路径sudo cp **/linux-6.6.10/tools/perf/perf /usr/local/bin/perf # 安装到系统路径4.查看cpu是否支持对应的perf事件sudo perf stat -e mem_load_retired.l1_miss -a sleep 1 [sudo] password for caisn: WARNING: perf not found for kernel 6.6.10-osDrafti You may need to install the following packages for this specific kernel: linux-tools-6.6.10-osDrafti-3 linux-cloud-tools-6.6.10-osDrafti-3 You may also want to install one of the following packages to keep up to date: linux-tools-3 linux-cloud-tools-35.PEBS问题继续排查caisncaisn-OS:~/kernel/linux-6.6.10$ perf record -e instructions:pp -c 1000 – sleep 1Error: instructions:ppu: PMU Hardware doesnt support sampling/overflow-interrupts. Try perf stat说明CPU可能不支持精确采样或者没有开启需要进一步排查6.最后编译成功之后如何开启# cd /sys/kernel/mm/damon/admin/ # echo 1 kdamonds/nr_kdamonds echo 1 kdamonds/0/contexts/nr_contexts # echo vaddr kdamonds/0/contexts/0/operations # echo 1 kdamonds/0/contexts/0/targets/nr_targets # echo $(pidof workload) kdamonds/0/contexts/0/targets/0/pid_target # echo on kdamonds/0/state

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