Hi all,
I have a question about NUMA.
User configured vNode(guest virtual numa node), but he didn't configure cputune and
numatune. Now we want to get the information that each vNode run in which pNode(host numa
node). It's run-time information that may be modified with high frequency.
In current Libvirt's API, we can get the information that each vCpu running on which
pCpu through virsh vcpuinfo(there should be a corresponding Libvirt API function). But we
didn't find any APIs to get the information that each vNode uses which pNode's
memory, or just each vCpu consumes which pNode's memory.
We find a command "numastat -mcn -p qemu" that can get the memory consume data
of each VM, but it still loses the information that we want(vNode memory consume data), as
following:
# numastat -mcn -p qemu
Per-node process memory usage (in MBs)
PID Node 0 Node 1 Total
--------------- ------ ------ -----
8900 (qemu-kvm) 2032 50 2083
17716 (qemu-kvm) 1546 663 2209
22484 (qemu-kvm) 621 1524 2146
29694 (qemu-kvm) 892 1350 2242
--------------- ------ ------ -----
Total 5092 3588 8680
.........
My question is:
1. In Libvirt, are there any ways that we can get our needed data?
2. If no ways in Libvirt, do you have any other suggestions to collect the
information?
Any feedbacks from you are appreciated.
Thanks & Best Regards
Shi, Xiao-Lei (Bruce)
Hewlett-Packard Co., Ltd.
HP Servers Core Platform Software China
Telephone +86 23 65683093
Mobile +86 18696583447
Email xiao-lei.shi@hp.com<mailto:shiguo.li@hp.com>