[Bug fix of NUMA feature] Add vNode run in pNode runtime information

22 May 2014

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Hi all,

I'm working on the NUMA feature of oVirt.
The feature is already merged in oVirt 3.5.0 alpha 1. Currently, it only ha=
s the virtual numa node (vNode) pin to host numa node(pNode) information wh=
ich is configured by user. We plan to collect the runtime information from =
vdsm that vNode run in which pNodes. Since this information is dynamic and =
changes more often, we want to let this information reported in the process=
 of vm stats report.
According to the above requirement, we will do the following development in=
 both engine and vdsm:
Vdsm side:

1.       In vm module, we will add a function to collect and calculate the =
real-time information that vNode run in pNodes. From caps module, we can ge=
t the cpu mapping information of each pNode; from vm conf, we can get the v=
cpu mapping information of each vNode; from libvirt api, we can get each vc=
pu run in which physical cpu runtime. According to the information, we can =
calculate the vNode run in pNodes information runtime.

2.       Add a key in vm stat map to hold the information and report it to =
engine.
Engine side:

1.       Currently we have the structure to store the vNode run in pNode in=
formation. In the structure, we have a field "ispinned" to represent if the=
 vNode is configured by user to pin to the pNode, or it is runtime run in t=
he pNode. Now we only need to parse the reported information from vdsm and =
update it in db.
We will open a bug to implement the requirement and merge it into 3.5.0.
Any comments and suggestions are welcome.

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>

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12.0pt"><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-autospace:none"><b><span style=3D"font=
-size:12.0pt">Shi, Xiao-Lei (Bruce)<o:p></o:p></span></b></p>
<p class=3D"MsoNormal" style=3D"text-autospace:none"><b><span style=3D"font=
-size:12.0pt"><o:p> </o:p></span></b></p>
<p class=3D"MsoNormal" style=3D"text-autospace:none"><b><span style=3D"font=
-size:12.0pt;color:black">Hewlett-Packard Co., Ltd.<br>
HP Servers Core Platform Software China</span></b><b><span style=3D"font-si=
ze:12.0pt">
<o:p></o:p></span></b></p>
<p class=3D"MsoNormal" style=3D"text-autospace:none"><b><span style=3D"font=
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 23 65683093<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-autospace:none"><b><span style=3D"font=
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</span></b><span style=3D"font-size:12.0pt">+86 18696583447<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><b><span style=3D"font-size:12.0pt">Email </span></b=
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<p class=3D"MsoNormal">Hi all,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">I’m working on the NUMA feature of oVirt.<o:p>=
</o:p></p>
<p class=3D"MsoNormal">The feature is already merged in oVirt 3.5.0 alpha 1=
. Currently, it only has the virtual numa node (vNode) pin to host numa nod=
e(pNode) information which is configured by user. We plan to collect the ru=
ntime information from vdsm that vNode
 run in which pNodes. Since this information is dynamic and changes more of=
ten, we want to let this information reported in the process of vm stats re=
port.<o:p></o:p></p>
<p class=3D"MsoNormal">According to the above requirement, we will do the f=
ollowing development in both engine and vdsm:<o:p></o:p></p>
<p class=3D"MsoNormal">Vdsm side:<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l1 level=
1 lfo1"><![if !supportLists]><span style=3D"mso-list:Ignore">1.<span style=
=3D"font:7.0pt "Times New Roman"">     &=
nbsp;
</span></span><![endif]>In vm module, we will add a function to collect and=
 calculate the real-time information that vNode run in pNodes. From caps mo=
dule, we can get the cpu mapping information of each pNode; from vm conf, w=
e can get the vcpu mapping information
 of each vNode; from libvirt api, we can get each vcpu run in which physica=
l cpu runtime. According to the information, we can calculate the vNode run=
 in pNodes information runtime.<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l1 level=
1 lfo1"><![if !supportLists]><span style=3D"mso-list:Ignore">2.<span style=
=3D"font:7.0pt "Times New Roman"">     &=
nbsp;
</span></span><![endif]>Add a key in vm stat map to hold the information an=
d report it to engine.<o:p></o:p></p>
<p class=3D"MsoNormal">Engine side:<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l0 level=
1 lfo2"><![if !supportLists]><span style=3D"mso-list:Ignore">1.<span style=
=3D"font:7.0pt "Times New Roman"">     &=
nbsp;
</span></span><![endif]>Currently we have the structure to store the vNode =
run in pNode information. In the structure, we have a field “ispinned=
” to represent if the vNode is configured by user to pin to the pNode=
, or it is runtime run in the pNode. Now we
 only need to parse the reported information from vdsm and update it in db.=
<o:p></o:p></p>
<p class=3D"MsoNormal">We will open a bug to implement the requirement and =
merge it into 3.5.0.<o:p></o:p></p>
<p class=3D"MsoNormal">Any comments and suggestions are welcome. <o:p></o:p=
 style=3D"color:blue">xiao-lei.shi@hp.com</span></a></span><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
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Shi, Xiao-Lei (Bruce, HP Servers-PSC-CQ)

Sven Kieske

Shi, Xiao-Lei (Bruce, HP Servers-PSC-CQ)

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