How to disable NUMA in Red Hat Enterprise Linux system?
Solution Verified - Updated August 17 at 11:06 AM -
Environment
Red Hat Enterprise Linux 4
Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Issue
How to disable NUMA in Red Hat Enterprise Linux system?
Resolution
Adding the "numa=off" to kernel command line in boot loader configuration and rebooting the system will disable NUMA.
Examples:
RHEL 4, RHEL 5, RHEL 6 (/boot/grub/grub.conf)
title Red Hat Enterprise Linux AS (2.6.9-55.EL) root (hd0,0) kernel /vmlinuz-2.6.9-55.EL ro root=/dev/VolGroup00/LogVol00 rhgb quiet numa=off initrd /initrd-2.6.9-55.EL.img
RHEL 7 (/etc/default/grub)
GRUB_CMDLINE_LINUX="rd.lvm.lv=rhel_vm-210/root rd.lvm.lv=rhel_vm-210/swap vconsole.font=latarcyrheb-sun16 crashkernel=auto vconsole.keymap=us rhgb quiet numa=off"
Please note, on RHEL 7 grub config has to be rebuilt for changes to take effect:
~]# grub2-mkconfig -o /etc/grub2.cfg
Product(s)
Red Hat Enterprise Linux
Component
numactl
Tags
numa
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