On Thursday, 23 September 2021 19:20:52 BST Michael wrote: > Out of interest, have you tried booting a NUMA enabled kernel to see what > dmesg reports?
Yes, it's been enabled ever since I had a dual-socket motherboard, years ago. I didn't understand why I did or didn't need it until I read Miles's post yesterday (thanks, Miles). I don't know why it hadn't been made clear in any websites I've visited. > On an old laptop, which definitely has only a single AMD > APU, I get: > > $ dmesg | grep -i NUMA -A2 > [ 0.002078] No NUMA configuration found > [ 0.002080] Faking a node at [mem 0x0000000000000000-0x000000042effffff] > [ 0.002085] NODE_DATA(0) allocated [mem 0x42effc000-0x42effffff] I had something similar. Oddly, with NUMA configured I get "not found" and without it I get "pci_bus 0000:00: on NUMA node 0". The system seems to run happily either way. -- Regards, Peter.
