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Configuring the SPE Environment

Table 1 Recommended versions

OS

Version

Kernel Version

openEuler

openEuler 20.03 LTS

4.19.90-2003.4.0.0036.oe1.aarch64

openEuler 22.03 LTS

5.10.0-60.18.0.50.oe2203.aarch64

openEuler 20.03 LTS-SP2

4.19.90-2106.3.0.0095.oe1.aarch64

openEuler 22.03 LTS-SP1

5.10.0-136.12.0.86.oe2203sp1.aarch64

Kylin

Kylin V10 (SP3)/(Lance)

4.19.90-52.15.v2207.ky10.aarch64

Kylin 3.4-5

4.19.90-2112.8.0.0131.kb8.ky3.aarch64

UOS

UOS 1020e

4.19.90-2106.3.0.0095.up2.uel20.aarch64

Configuring the SPE Environment for openEuler

Kunpeng servers support the SPE function in BIOS since V159.

  1. Check the status of MISC Config--> SPE in the BIOS. If the status is Disabled, change it to Enabled.

  2. Use an SSH tool to remotely log in to the Linux CLI as the root user.
  3. Configure system boot parameters.
    1. Run the following command to open the configuration file: 
      1
      		 
      vim /etc/grub2-efi.cfg
    2. Locate the boot option corresponding to the kernel version and add kpti=off at the end of the option. 
      1
      		 
              linux   /vmlinuz-4.19.90-2003.4.0.0036.oe1.aarch64 root=/dev/mapper/openeuler-root ro rd.lvm.lv=openeuler/root rd.lvm.lv=openeuler/swap video=VGA-1:640x480-32@60me rhgb quiet  smmu.bypassdev=0x1000:0x17 smmu.bypassdev=0x1000:0x15 crashkernel=1024M,high video=efifb:off video=VGA-1:640x480-32@60me kpti=off
    3. Press ESC, type :wq!, and press Enter to save the file and exit.
    4. Run the reboot command to reboot the server.
  4. After installing the System Profiler, run the following command to check whether the SPE function is enabled:
    1
    		 
    perf list | grep arm_spe

    If the following information is displayed, the SPE function is enabled.

    1
    		 
    arm_spe_0//                                        [Kernel PMU event]

Configuring the SPE Environment for CentOS 7.6

  • Kunpeng servers support the SPE function in BIOS since V159.
  • To perform a miss event analysis, configure the SPE environment to support SPE collection.
  1. Check the status of MISC Config--> SPE in the BIOS. If the status is Disabled, change it to Enabled.

  2. Use an SSH tool to remotely log in to the Linux CLI as the root user.
  3. Configure system boot parameters.
    1. Run the following command to open the configuration file: 
      1
      		 
      vim /boot/efi/EFI/centos/grub.cfg
    2. Locate the boot option corresponding to the kernel version and add kpti=off at the end of the option. 
      1
      		 
              linux   /vmlinuz-4.14.0-115.el7a.0.1.aarch64 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet LANG=en_US.UTF-8 kpti=off
    3. Press ESC, type :wq!, and press Enter to save the file and exit.
    4. Run the reboot command to reboot the server.
    5. Run the following command to obtain system boot parameters and check whether kpti=off is successfully added: 
      1
      		 
      cat /proc/cmdline
  4. After installing the System Profiler, run the following command to check whether the SPE function is enabled:
    1
    		 
    perf list | grep arm_spe

    If the following information is displayed, the SPE function is enabled.

    1
    		 
    arm_spe_0//                                        [Kernel PMU event]
Parent topic: Common Operations