Hi Everyone,
I started with
Before I even started I enabled NUMA in BIOS and checked my dmesg which shows stuff such as:
However,
I inspected GENERIC and found:
man 4 numa says:
At this point I blamed lack of MAXMEMDOM in generic. I've added this option, recompiled kernel, rebooted and still only one domain in userland. How can I enable it?
I started with
man 4 numa
. Before I even started I enabled NUMA in BIOS and checked my dmesg which shows stuff such as:
Code:
SMP: AP CPU #1 Launched!
SMP: AP CPU #41 Launched!
SMP: AP CPU #40 Launched!
SMP: AP CPU #5 Launched!
SMP: AP CPU #48 Launched!
SMP: AP CPU #26 Launched!
cpu38: <ACPI CPU> numa-domain 1 on acpi0
cpu39: <ACPI CPU> numa-domain 1 on acpi0
cpu40: <ACPI CPU> numa-domain 2 on acpi0
cpu41: <ACPI CPU> numa-domain 2 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff numa-domain 0 on acpi0
pci0: <ACPI PCI bus> numa-domain 0 on pcib0
However,
Code:
[root@testmother ~]# sysctl vm.ndomains
vm.ndomains: 1
I inspected GENERIC and found:
Code:
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
options DEVICE_NUMA # I/O Device Affinity
options EARLY_AP_STARTUP
man 4 numa says:
Code:
options SMP
options MAXMEMDOM=16
At this point I blamed lack of MAXMEMDOM in generic. I've added this option, recompiled kernel, rebooted and still only one domain in userland. How can I enable it?