How to determine if NUMA configuration is enabled or disabled?
Issue
- How to determine if NUMA configuration is enabled or disabled?
numactl --showdoes not show multiple nodes
# numactl --show
policy: default
preferred node: current
physcpubind: 0 1 2 3 4 5 6 7 8 9 10 11
cpubind: 0
nodebind: 0
membind: 0
numactl --hardwaredoes not list multiple nodes
available: 1 nodes (0)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11
node 0 size: 65525 MB
node 0 free: 17419 MB
node distances:
node 0
0: 10
- grep -i numa /var/log/dmesg returns
No NUMA configuration found
No NUMA configuration found
Faking a node at 0000000000000000-0000001027fff000
Bootmem setup node 0 0000000000000000-0000001027fff000
NODE_DATA [000000000000c000 - 000000000003ffff]
bootmap [0000000000100000 - 0000000000304fff] pages 205
- Even with NUMA enabled, dmesg does not show any information of NUMA initialization.
Environment
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.
