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

Monday, 10 March 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"...
 Hi
All,<o:p></o:p></p...
 <o:p>&nbsp;</o:p></p...
 In order to support NUMA and
guest =
NUMA feature in ovirt.<o:p></o:p></p...
 We need per NUMA node CPU
usage or =
per CPU usage related information on engine
core.<o:p></o:p></p...
 <o:p>&nbsp;</o:p></p...
 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></p...
 <o:p>&nbsp;</o:p></p...
 Approach
1:<o:p></o:p></p...
 1.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>Sample data in vdsm
for eac=
h CPU stats. (sys, usr, iowait, idle)<o:p></o:p></p...
 2.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>Calculate the each CPU
usag=
e information. (%sys, %usr, %iowait, %idle)<o:p></o:p></p...
 3.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>Transport the usage
data to=
 engine core.<o:p></o:p></p...
 4.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>Engine core merge per
NUMA =
node CPU usage. (%sys, %usr, %iowait, %idle)<o:p></o:p></p...
 <o:p>&nbsp;</o:p></p...
 Approach
2:<o:p></o:p></p...
 1.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>Sample data in vdsm
for eac=
h CPU stats. (sys, usr, iowait, idle)<o:p></o:p></p...
 2.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>Calculate the each CPU
usag=
e information. (%sys, %usr, %iowait, %idle)<o:p></o:p></p...
 3.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>VDSM merge per NUMA
node CP=
U usage. (%sys, %usr, %iowait, %idle)<o:p></o:p></p...
 4.<sp=
an style=3D"font:7.0pt &quot;Times New
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;
<![endif]>Transport the usage
data to=
 engine core.<o:p></o:p></p...
 <o:p>&nbsp;</o:p></p...
 Which one do you prefer, and
why, o=
r other solution.<o:p></o:p></p...
 <o:p>&nbsp;</o:p></p...
 Best=
 Regards,<br...
 Jason
Liao=
<o:p></o:p></p...
 <o:p>&nbsp;</o:p></p...

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