Re: {bb} Monitoring Power5 LPARs on RS/6Ks

[Rich Smrcina <rsmrcina@wi.rr.com>]

Load Average is the number of running processes and will not be affected by 
virtualization.  If you really mean CPU Utilization, then yes it may be 
affected by virtualization.  On the zSeries, VM has the means to get the 
total CPU Utilization for all virtual machines.  Performance monitors can 
provide this information for each virtual machine, measured at the hipervisor 
level and 'pro-rated' to compensate for the hipervisor and the other virtual 
machines.

I don't know much about the pSeries hipervisor, but I would guess that you 
want to look for some hipervisor level information, perhaps available via 
SNMP.

On Thursday 25 May 2006 8:16 pm, Richard Beals wrote:
> All,
>
> A client is considering the migration to virtualized systems on Power5
> architecture... LPARs, and all that.
>
> I anticipate they will find some occasional oddities, particularly
> around such things as reporting of load averages.
>
> Does anyone have experiences, tips, or "lessons learned" they'd like to
> share?

-- 
Rich Smrcina
VM Assist, Inc.
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Cell: (414)491-6001
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rich.smrcina at vmassist.com

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