CPU/MEM usage of resource pool

[alanrenouf]

Me Again !

Thanks for your help so far, you guys are amazing.

If I am in VC and I click a Resource Pool I am able to see the CPU Usage and Memory usage of all VM's in that resource pool

IE

Production Resource Pool:

CPU Usage: 919 Mhz

Mem Usage: 4770 MB

Do you know how i might do this for a given resource pool name ?

Thanks

[halr9000]

I haven't done much stats stuff yet but play around with this:

get-resourcepool foo | get-stat

Hal Rottenberg

Co-Host, PowerScripting Podcast (http://powerscripting.net)

[Niket]

Hi,

Below script will provide the required output.

$server = get-viserver -server ) -Stat cpu.usagemhz.average,cpu.usagemhz.maximum -Realtime

You can add the any number of required statistics counter with -stat separated by commas as I did for two counters.

-RealTime parameter provide the output at the interval of 20 second and for historical data you can remove this parameter.

For other flexibility like 5 days back data or restrict the number of output sample please refer the thread http://communities.vmware.com/message/962460

Thanks

Niket

[alanrenouf]

Thanks, that gets the CPU usage of the resource group but I cant get the mem usage, if i change it for mem.usage.average it comes back as a percentage rather than the amount being used in that resource group.

Is it just me or does that not make sense, giving one type of figure for one counter and another for the same one of a different type ?

Anyway, any ideas how to get the memory please ?

Thanks

[LucD]

Try with mem.active.average, that will give you the "Amount of memory that is actively used".

For an overview of all performance counters and their meaning and availability see Appendix A in the Programming Guide VMware Infrastructure SDK 2.5

[alanrenouf]

I have tried a fair few of these but I dont think the item has stats for these counters.

[LucD]

Did you use realtime stats ?

Get-Stat -Entity (Get-ResourcePool -Name <resource-pool-name>) -Stat mem.active.average -Realtime

returns statistics in my environment.

If not, did you check in the VI Client via menu <Administration><VirtualCenter Management Server Configuration><Statistics> if you keep statistics for the interval you requested ?

[alanrenouf]

Yeah tried it and am not getting any results please see below:

PS C:\Program Files\VMware\Infrastructure\VIToolkitForWindows> Get-Stat -Entity

(Get-ResourcePool -Name "Production") -Stat mem.active.average -Realtime

PS C:\Program Files\VMware\Infrastructure\VIToolkitForWindows> Get-Stat -Entity

(Get-ResourcePool -Name "Production") -Realtime

MetricId Timestamp Value Unit

-

---

-

---

-

---

-

---

cpu.usagemhz.average 6/20/2008 9:50:00 AM 7947 MHz

cpu.usagemhz.average 6/20/2008 9:45:00 AM 7810 MHz

cpu.usagemhz.average 6/20/2008 9:40:00 AM 7607 MHz

cpu.usagemhz.average 6/20/2008 9:35:00 AM 7769 MHz

cpu.usagemhz.average 6/20/2008 9:30:00 AM 7650 MHz

cpu.usagemhz.average 6/20/2008 9:25:00 AM 7766 MHz

cpu.usagemhz.average 6/20/2008 9:20:00 AM 7433 MHz

cpu.usagemhz.average 6/20/2008 9:15:00 AM 7832 MHz

cpu.usagemhz.average 6/20/2008 9:10:00 AM 7960 MHz

cpu.usagemhz.average 6/20/2008 9:05:00 AM 8336 MHz

mem.usage.average 6/20/2008 9:50:00 AM 225.8 %

mem.usage.average 6/20/2008 9:45:00 AM 216.65 %

mem.usage.average 6/20/2008 9:40:00 AM 218.06 %

mem.usage.average 6/20/2008 9:35:00 AM 216.45 %

mem.usage.average 6/20/2008 9:30:00 AM 215.55 %

mem.usage.average 6/20/2008 9:25:00 AM 218.68 %

mem.usage.average 6/20/2008 9:20:00 AM 219.87 %

mem.usage.average 6/20/2008 9:15:00 AM 229.59 %

mem.usage.average 6/20/2008 9:10:00 AM 222.4 %

mem.usage.average 6/20/2008 9:05:00 AM 215.85 %

[Niket]

Same script which you ran.

PS C:\Program Files\VMware\Infrastructure\VIToolkitForWindows> Get-Stat -Entity (Get-ResourcePool -Name "Production") -Stat mem.active.average -Realtime

giving the right output:

MetricId Timestamp Value Unit

-

---

-

---

-

---

-

---

mem.active.average 6/20/2008 9:24:20 PM 29300 KB

mem.active.average 6/20/2008 9:24:00 PM 36624 KB

mem.active.average 6/20/2008 9:23:40 PM 36624 KB

mem.active.average 6/20/2008 9:23:20 PM 36624 KB

mem.active.average 6/20/2008 9:23:00 PM 29300 KB

mem.active.average 6/20/2008 9:22:40 PM 21976 KB

mem.active.average 6/20/2008 9:22:20 PM 21976 KB

mem.active.average 6/20/2008 9:22:00 PM 36624 KB

mem.active.average 6/20/2008 9:21:40 PM 36624 KB

mem.active.average 6/20/2008 9:21:20 PM 36624 KB

Try to run the script in new session of VI toolkit.

Thanks

Niket

[alanrenouf]

That is strange, I have tried it in a new session through the toolkit and also through PowerGUI, I have even re-booted my pc !

Also tried it against a second Virtual Center server I have, do you think i should try and re-install the toolkit ?

Thanks fro all your help.

Alan

[LucD]

Did you try to see those stats via the VI Client ?

I don't think a reinstall will help.

If there was something wrong with the VI Toolkit you shouldn't see any stats.

[alanrenouf]

Yeah checked the VI stat settings and they are still default, anyway arent we doing it realtime. Dont understand why they are missing for resource pools in particular ?

[alanrenouf]

If i do it for a VM it works fine, just resource groups...

Get-Stat -Entity (Get-vm -name "AMACHINE") -Stat mem.active.average -Realtime

[LucD]

I just experienced something similar a minute ago.

Can you try this

Get-Stat -Entity (Get-ResourcePool -Name <poolname>) -Stat mem.active.average -Realtime | Out-Default

[alanrenouf]

Still no output

Is it a bug in the toolkit ?

[LucD]

Don't think it's a bug in the Toolkit, otherwise we would all see it.

Does the Get-ResourcePool on it's own return something ?

[alanrenouf]

Yeah that works fine and I can get the following two stats from it but nothing else....

Get-Stat -Entity (Get-ResourcePool -Name "Production") -Stat cpu.usagemhz.average -MaxSamples 1 -Realtime

Get-Stat -Entity (Get-ResourcePool -Name "Production") -Stat mem.usage.average -MaxSamples 1 -Realtime

[alanrenouf]

Anyone else have any ideas ? Still not working :_|

[LucD]

You have to look at the Entity column in Appendix A in the SDK Programming Guide.

It shows clearly that there are not that many statistics available for resource groups.

For cpu stats for example it shows that for resource groups there is only usagemhz.

[alanrenouf]

Did you use realtime stats ?

<pre>
Get-Stat -Entity (Get-ResourcePool -Name <resource-pool-name>) -Stat mem.active.average -Realtime
</pre>

returns statistics in my environment.

Just wondered how you get results for the above as this is what I want but do not get results, you said you do though.