Public bug reported:
== Comment: #0 - SANTWANA SAMANTRAY <santwana.samant...@in.ibm.com> -
2019-02-20 23:48:43 ==
---Problem Description---
numastat doesn't display correct information for kvm guests.
The guest is configured with vcpupin from the node8:
Snippet of the guest XML :
<vcpu placement='static' current='4'>8</vcpu>
<cputune>
<vcpupin vcpu='0' cpuset='64'/>
<vcpupin vcpu='1' cpuset='65'/>
<vcpupin vcpu='2' cpuset='66'/>
<vcpupin vcpu='3' cpuset='67'/>
<emulatorpin cpuset='64-67'/>
</cputune>
<numatune>
<memory mode='strict' nodeset='8'/>
</numatune>
== Host Details ==
# lscpu
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 128
On-line CPU(s) list: 0-127
Thread(s) per core: 4
Core(s) per socket: 16
Socket(s): 2
NUMA node(s): 6
Model: 2.2 (pvr 004e 1202)
Model name: POWER9, altivec supported
CPU max MHz: 3800.0000
CPU min MHz: 2300.0000
L1d cache: 32K
L1i cache: 32K
L2 cache: 512K
L3 cache: 10240K
NUMA node0 CPU(s): 0-63
NUMA node8 CPU(s): 64-127
NUMA node252 CPU(s):
NUMA node253 CPU(s):
NUMA node254 CPU(s):
NUMA node255 CPU(s):
After starting the guest, the numastat doesn't display the guest process to be
running in node8.
# numastat -c qemu-system-ppc64
Per-node process memory usage (in MBs) for PID 5738 (qemu-system-ppc)
Node 0 Node 8 Node 252 Node 253 Node 254 Node 255 Total
------ ------ -------- -------- -------- -------- -----
Huge 0 0 0 0 0 0 0
Heap 0 0 0 0 0 0 14
Stack 14 0 0 0 0 0 0
Private 936 0 0 0 0 0 3064
------- ------ ------ -------- -------- -------- -------- -----
Total 936 0 0 0 0 0 3079
# service numad status
* numad.service - numad - The NUMA daemon that manages application locality.
Loaded: loaded (/lib/systemd/system/numad.service; enabled; vendor preset:
enabled)
Active: active (running) since Thu 2019-02-21 00:43:54 EST; 20s ago
Docs: man:numad
Process: 8091 ExecStart=/usr/bin/numad $DAEMON_ARGS -i 15 (code=exited,
status=0/SUCCESS)
Main PID: 8092 (numad)
Tasks: 2 (limit: 19660)
CGroup: /system.slice/numad.service
`-8092 /usr/bin/numad -i 15
Feb 21 00:43:54 ltcgen3 systemd[1]: Starting numad - The NUMA daemon that
manages application locality....
Feb 21 00:43:54 ltcgen3 systemd[1]: Started numad - The NUMA daemon that
manages application locality..
---uname output---
Linux ltcgen3 4.15.0-1016-ibm-gt #18-Ubuntu SMP Thu Feb 7 16:58:31 UTC 2019
ppc64le ppc64le ppc64le GNU/Linux
Machine Type = Witherspoon
== Versions Installed ==
qemu 1:2.11+dfsg-1ubuntu7.8-1ibm3
qemu-kvm 1:2.11+dfsg-1ubuntu7.9
qemu-system-ppc 1:2.11+dfsg-1ubuntu7.8-1ibm3
libvirt0:ppc64el 4.0.0-1ubuntu8.6
libnuma-dev:ppc64el 2.0.11-2.1
libnuma1:ppc64el 2.0.11-2.1
numactl 2.0.11-2.1
numad 0.5+20150602-5
---Debugger---
A debugger is not configured
---Steps to Reproduce---
1. Configure the guest with vcpu pinning and memory binding to one of the numa
node.
<cputune>
<vcpupin vcpu='0' cpuset='64'/>
<vcpupin vcpu='1' cpuset='65'/>
<vcpupin vcpu='2' cpuset='66'/>
<vcpupin vcpu='3' cpuset='67'/>
<emulatorpin cpuset='64-67'/>
</cputune>
<numatune>
<memory mode='strict' nodeset='8'/>
</numatune>
2. Start the guest.
3. Check the "numastat" for the guest details.
4. The output doesn't display any data for desired node.
Contact Information = Santwana Samantray/santwana.samant...@in.ibm.com
== Comment: #1 - SANTWANA SAMANTRAY <santwana.samant...@in.ibm.com> -
2019-02-20 23:49:58 ==
== Comment: #4 - SEETEENA THOUFEEK <sthou...@in.ibm.com> - 2019-02-22 00:40:37
==
I am not able to replicate in upstream code
We need to cherry pick this patch in numactl 2.0.11-2.1 level.
https://github.com/numactl/numactl/commit/b608687037d873ad82d6318f231b3d6612e8601d
root@ltcgen3:~/numactl# ./numastat -c qemu-system-ppc64
Per-node process memory usage (in MBs) for PID 53294 (qemu-system-ppc)
Node 0 Node 8 Node 252 Node 253 Node 254 Node 255 Total
------ ------ -------- -------- -------- -------- ------
Huge 0 0 0 0 0 0 0
Heap 0 28 0 0 0 0 28
Stack 0 0 0 0 0 0 0
Private 0 103727 0 0 0 0 103727
------- ------ ------ -------- -------- -------- -------- ------
Total 0 103755 0 0 0 0 103755
---------------------------------------------------------------------------------------------------
** Affects: numactl (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New
** Tags: architecture-ppc64le bugnameltc-175674 severity-high
targetmilestone-inin---
** Tags added: architecture-ppc64le bugnameltc-175674 severity-high
targetmilestone-inin---
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https://bugs.launchpad.net/bugs/1817258
Title:
genesis : "numastat" doesn't display correct information for the
guest.
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