Just disable remapping by adding nointermap to the group

Experiencing sluggish performance with iLo4 in conjunction with AlmaLinux can be frustrating. A straightforward yet effective solution to this issue is to disable interrupt remapping. This can lead to a noticeable improvement in responsiveness and overall system performance.

To achieve this, you need to modify the GRUB configuration by adding the nointremap option. Here’s how to do it in a clear and concise manner:

1. Access GRUB Configuration: The first step involves editing the GRUB configuration file. This file is typically located at /etc/default/grub. You’ll need root permissions to edit this file.
2. Modify the GRUB Configuration:
   • Open the GRUB configuration file with a text editor of your choice, such as nano or vi.
   • Look for the line that starts with GRUB_CMDLINE_LINUX. This line contains kernel parameters that GRUB passes to the Linux kernel at boot time.
   • Add nointremap to the end of the kernel parameters listed in quotes. Ensure there’s a space between the existing parameters and nointremap.
   • Save and close the file after making the addition.
3. Update GRUB: After modifying the configuration file, you need to update GRUB to apply the changes. This is done by running the following command:bashCopy codegrub2-mkconfig -o /boot/grub2/grub.cfg This command generates a new GRUB configuration based on your modifications.
4. Reboot Your System: Finally, reboot your system to apply the changes. The system should now boot with interrupt remapping disabled, which may result in improved performance for iLo4 and AlmaLinux environments.

By following these steps, you can disable interrupt remapping, potentially solving the issue of slow performance with iLo4 and AlmaLinux. This simple adjustment can make a significant difference in the efficiency and responsiveness of your system.