I have a p5 570, with 4 DCMs (4 CPUs, 8 cores).
I have two micro paritions.
I have two VIO servers. So, four micro paritions in total.
Also using a HMC and CSM from management station (p520).

I want to monitor the CPU usage at the physical level. ie. at the
hypervisor level.
I don't want any AIX commands, because these will only monitor that
micro parition. So I don't think iostat, vmstat, mpstat, lparstat,
nmon, sar, etc. will help.

I tried looking on the HMC, but I couldn't find what I wanted. I don't
think Ultilization Data Mangement, will give me what I want. Although,
it is the closest thing I could find.

Can anyone help me out?

Miles

> I have a p5 570, with 4 DCMs (4 CPUs, 8 cores).
> I have two micro paritions.
> I have two VIO servers. So, four micro paritions in total.
> Also using a HMC and CSM from management station (p520).
>
> I want to monitor the CPU usage at the physical level. ie. at the
> hypervisor level.
> I don't want any AIX commands, because these will only monitor that
> micro parition. So I don't think iostat, vmstat, mpstat, lparstat,
> nmon, sar, etc. will help.
>
> I tried looking on the HMC, but I couldn't find what I wanted. I don't
> think Ultilization Data Mangement, will give me what I want. Although,
> it is the closest thing I could find.
>
> Can anyone help me out?
>
> Miles


Hi Miles.

You can monitor the cpu usage of the whole system from within micro
partitions, if you grant "Pool Authority" to that partition. Then use
tools like lparstat (app column) or nmon (press p) to monitor your
shared CPU pool.

Hope this helps.
- Svenni

sveinng@gmail.com wrote:
> > I have a p5 570, with 4 DCMs (4 CPUs, 8 cores).
> > I have two micro paritions.
> > I have two VIO servers. So, four micro paritions in total.
> > Also using a HMC and CSM from management station (p520).
> >
> > I want to monitor the CPU usage at the physical level. ie. at the
> > hypervisor level.
> > I don't want any AIX commands, because these will only monitor that
> > micro parition. So I don't think iostat, vmstat, mpstat, lparstat,
> > nmon, sar, etc. will help.
> >
> > I tried looking on the HMC, but I couldn't find what I wanted. I don't
> > think Ultilization Data Mangement, will give me what I want. Although,
> > it is the closest thing I could find.
> >
> > Can anyone help me out?
> >
> > Miles
>
>
> Hi Miles.
>
> You can monitor the cpu usage of the whole system from within micro
> partitions, if you grant "Pool Authority" to that partition. Then use
> tools like lparstat (app column) or nmon (press p) to monitor your
> shared CPU pool.
>
> Hope this helps.
> - Svenni

I think that might be it!

This is what I did:
log into the HMC
Select Server and Partition
Select Server Managment
Click on each physical server:
Expand: Partitions
Right click on each on each of the micro partitions:
- Select Properties
- Click on Hardware
- Click on Processors and Memory
- Check "Allow shared processor pool utilization authority"
The change is dynamic.

Here is the difference in the lparstat commands:
lparstat 2 4

System configuration: type=Shared mode=Uncapped smt=On lcpu=8 mem=20480

%user %sys %wait %idle physc %entc lbusy vcsw phint
----- ---- ----- ----- ----- ----- ------ ---- -----
7.4 10.7 0.0 81.9 0.42 21.0 5.5 2522 25
3.7 6.6 0.0 89.7 0.24 12.0 2.7 2188 6
5.0 7.3 0.0 87.7 0.28 14.2 3.2 2089 13
7.8 8.4 0.0 83.7 0.37 18.4 4.3 1884 13
lparstat 2 4

System configuration: type=Shared mode=Uncapped smt=On lcpu=8 mem=20480

%user %sys %wait %idle physc %entc lbusy app vcsw phint
----- ---- ----- ----- ----- ----- ------ --- ---- -----
20.6 11.2 0.0 68.2 0.70 35.0 10.5 6.32 1476 64
27.8 9.7 0.0 62.6 0.80 40.2 13.5 6.19 1754 47
41.8 19.9 0.0 38.3 1.34 67.2 20.8 5.48 2777 133
29.8 22.1 0.0 48.1 1.17 58.7 15.0 5.75 5362 61

Notice the app column. This appears to be the amount of idle processing
units (for the entire physical server).

The output in nmon then changes a little:
Flags: LPARed DRable SMT-bound Shared UnCapped PoolAuth
Summary: Entitled= 2.00 Used 0.68 ( 33.8%) 8.4% of CPUs in System

PoolCPUs= 8 Unused 7.28 8.4% of CPUs in
Pool

The utilization of the entire physical server, including all micro
partitions is then:
(installed processing units - Unused) / installed processing units *
100
or: (8 - 7.28) / 8 * 100 or 9%

Thanks Svenni