Bug 218951 - Linux warns `Unknown NUMA node; performance will be reduced`
Summary: Linux warns `Unknown NUMA node; performance will be reduced`
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: PCI (show other bugs)
Hardware: All Linux
: P3 normal
Assignee: drivers_pci@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-06-10 20:22 UTC by Paul Menzel
Modified: 2024-09-05 13:30 UTC (History)
1 user (show)

See Also:
Kernel Version:
Subsystem:
Regression: No
Bisected commit-id:

Attachments
Output of `acpidump` on Dell PowerEdge T630 with system firmware 2.4.2 (194.28 KB, application/x-7z-compressed)
2024-06-10 20:24 UTC, Paul Menzel 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Paul Menzel 2024-06-10 20:22:55 UTC 
This issue is for attaching files for the discussion [1].


[1]: https://lore.kernel.org/r/a154f694-c48b-4b3b-809f-4b74ec86a924@molgen.mpg.de
Comment 1 Paul Menzel 2024-06-10 20:24:15 UTC 
Created attachment 306448 [details]
Output of `acpidump` on Dell PowerEdge T630 with system firmware 2.4.2
Comment 2 sander44 2024-09-05 13:30:59 UTC 
I have similar issue with you.

sudo dmesg| grep -i numa
[    0.056282] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff]
[    0.056284] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x83fffffff] -> [mem 0x00000000-0x83fffffff]
[    0.400874] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[    0.563848] pci_bus 0000:00: Unknown NUMA node; performance will be reduced


pci_bus 0000:00: Unknown NUMA node; performance will be reduced


Host: VMware VM Ubuntu 24.04.1
CPU: Intel(R) Xeon(R) Silver 4310 CPU @ 2.10GHz
Kernel: 6.11.0-rc6
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