Gentoo Archives: gentoo-user

From: Peter Humphrey <peter@××××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Do I need NUMA set up in my kernel?
Date: Fri, 24 Sep 2021 09:06:58
Message-Id: 2222402.ElGaqSPkdT@wstn
In Reply to: Re: [gentoo-user] Do I need NUMA set up in my kernel? by Michael
1 On Thursday, 23 September 2021 19:20:52 BST Michael wrote:
2
3 > Out of interest, have you tried booting a NUMA enabled kernel to see what
4 > dmesg reports?
5
6 Yes, it's been enabled ever since I had a dual-socket motherboard, years ago.
7 I didn't understand why I did or didn't need it until I read Miles's post
8 yesterday (thanks, Miles). I don't know why it hadn't been made clear in any
9 websites I've visited.
10
11 > On an old laptop, which definitely has only a single AMD
12 > APU, I get:
13 >
14 > $ dmesg | grep -i NUMA -A2
15 > [ 0.002078] No NUMA configuration found
16 > [ 0.002080] Faking a node at [mem
17 0x0000000000000000-0x000000042effffff]
18 > [ 0.002085] NODE_DATA(0) allocated [mem 0x42effc000-0x42effffff]
19
20 I had something similar. Oddly, with NUMA configured I get "not found" and
21 without it I get "pci_bus 0000:00: on NUMA node 0". The system seems to run
22 happily either way.
23
24 --
25 Regards,
26 Peter.

Replies

Subject Author
Re: [gentoo-user] Do I need NUMA set up in my kernel? Michael <confabulate@××××××××.com>