[Engine-devel] Supposed to add per CPU usage related infomation into engine core and vdsm

10 Mar 2014

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Hi All,

In order to support NUMA and guest NUMA feature in ovirt.
We need per NUMA node CPU usage or per CPU usage related information on eng=
ine core.

This information will be used for VM who have NUMA aware information and fi=
nd the best Host to run it on with best performance.

Approach 1:

1.      Sample data in vdsm for each CPU stats. (sys, usr, iowait, idle)

2.      Calculate the each CPU usage information. (%sys, %usr, %iowait, %id=
le)

3.      Transport the usage data to engine core.

4.      Engine core merge per NUMA node CPU usage. (%sys, %usr, %iowait, %i=
dle)

Approach 2:

1.      Sample data in vdsm for each CPU stats. (sys, usr, iowait, idle)

2.      Calculate the each CPU usage information. (%sys, %usr, %iowait, %id=
le)

3.      VDSM merge per NUMA node CPU usage. (%sys, %usr, %iowait, %idle)

4.      Transport the usage data to engine core.

Which one do you prefer, and why, or other solution.

Best Regards,
Jason Liao

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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif"">Hi All,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif""><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif"">In order to support NUMA and guest =
NUMA feature in ovirt.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif"">We need per NUMA node CPU usage or =
per CPU usage related information on engine core.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif""><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif"">This information will be used for V=
M who have NUMA aware information and find the best Host to run it on with =
best performance.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif""><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif"">Approach 1:<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l1 level1 lfo1">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">1.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">Sample data in vdsm for eac=
h CPU stats. (sys, usr, iowait, idle)<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l1 level1 lfo1">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">2.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">Calculate the each CPU usag=
e information. (%sys, %usr, %iowait, %idle)<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l1 level1 lfo1">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">3.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">Transport the usage data to=
 engine core.<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l1 level1 lfo1">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">4.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">Engine core merge per NUMA =
node CPU usage. (%sys, %usr, %iowait, %idle)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif""><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif"">Approach 2:<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">1.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">Sample data in vdsm for eac=
h CPU stats. (sys, usr, iowait, idle)<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">2.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">Calculate the each CPU usag=
e information. (%sys, %usr, %iowait, %idle)<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">3.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">VDSM merge per NUMA node CP=
U usage. (%sys, %usr, %iowait, %idle)<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:18.0pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang=3D"EN-US" style=3D"font-family:"HP Sim=
plified","sans-serif""><span style=3D"mso-list:Ignore">4.<sp=
an style=3D"font:7.0pt "Times New Roman"">    =
; 
</span></span></span><![endif]><span lang=3D"EN-US" style=3D"font-family:&q=
uot;HP Simplified","sans-serif"">Transport the usage data to=
 engine core.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif""><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif"">Which one do you prefer, and why, o=
r other solution.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:"HP S=
implified","sans-serif""><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:9.0pt;fon=
t-family:"HP Simplified","sans-serif";color:black">Best=
 Regards,<br>
</span></b><span lang=3D"EN-US" style=3D"font-size:9.0pt;font-family:"=
HP Simplified","sans-serif";color:#717172">Jason Liao</span>=
<span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
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Liao, Chuan (Jason Liao, HPservers-Core-OE-PSC)

Gilad Chaplik

Eli Mesika

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participants (3)