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The memory for {VMM} could not be allocated entirely within one no

Source: microsoft.public.virtualpc
Sent: 09/05/2006
From: Pfeiffer
Message:

I am running 10 Virtual Machines (XP SP2) on a HP ProLiant DL385 G1 (AMD 2.4
with 12GB of RAM). I have got the last of the hardware bugs out but this
Event Log Warning has eluded me.

"The memory for {Virtual machine ID} could not be allocated entirely within
one node. The performance of this virtual machine may be degraded."

The warning occurs after the server boots up. We have a script that starts
a session and waits for the OS heartbeat, once it gets it, it moves to the
next session in the array (rinse and repeat) until their all up and running.

Unfortunatly that last 3 get this message. I have 10+ servers configured
this way (between 7 and 10 sessions each) and each one has similar behavior.
I am only allocating 1024MB of RAM to each session, and have thottled them to
50% CPU usage.

I am outta idea, anyone seen something like this? I will take a S.W.A.G.at
this point.

Post Reply | This is Spam! | Mark as Spam

Related Messages

Re: The memory for {VMM} could not be allocated entirely within one no

Sent: 09/07/2006
From: "Bill Grant" <not.available@online>
Message:

This will be related to the way the AMD processor accesses memory.
(NUMA - Non Uniform Memory Allocation). Banks of memory directly linked to a
processor respond faster than those reached indirectly.

http://www.devx.com/amd/Article/31802

Pfeiffer wrote:

Show quoted text

> I am running 10 Virtual Machines (XP SP2) on a HP ProLiant DL385 G1
> (AMD 2.4 with 12GB of RAM). I have got the last of the hardware bugs
> out but this Event Log Warning has eluded me.
>
> "The memory for {Virtual machine ID} could not be allocated entirely
> within one node. The performance of this virtual machine may be
> degraded."
>
> The warning occurs after the server boots up. We have a script that
> starts a session and waits for the OS heartbeat, once it gets it, it
> moves to the next session in the array (rinse and repeat) until their
> all up and running.
>
> Unfortunatly that last 3 get this message. I have 10+ servers
> configured this way (between 7 and 10 sessions each) and each one has
> similar behavior. I am only allocating 1024MB of RAM to each session,
> and have thottled them to 50% CPU usage.
>
> I am outta idea, anyone seen something like this? I will take a
> S.W.A.G.at this point.

RE: The memory for {VMM} could not be allocated entirely within one no

Sent: 05/09/2007
From: "Humphrey"<(email address - cut out)>
Message:

similar messages here...

has anyone found some solutions yet?

Posted via http://www.VirtualServerFaq.com - Brought to you by Business Information Technology Shop - http://www.bitshop.com

Show quoted text

> I am running 10 Virtual Machines (XP SP2) on a HP ProLiant DL385 G1 (AMD 2.4
> with 12GB of RAM). I have got the last of the hardware bugs out but this
> Event Log Warning has eluded me.
>
> "The memory for {Virtual machine ID} could not be allocated entirely within
> one node. The performance of this virtual machine may be degraded."
>
> The warning occurs after the server boots up. We have a script that starts
> a session and waits for the OS heartbeat, once it gets it, it moves to the
> next session in the array (rinse and repeat) until their all up and running.
>
> Unfortunatly that last 3 get this message. I have 10+ servers configured
> this way (between 7 and 10 sessions each) and each one has similar behavior.
> I am only allocating 1024MB of RAM to each session, and have thottled them to
> 50% CPU usage.
>
> I am outta idea, anyone seen something like this? I will take a S.W.A.G.at
> this point.

Re: The memory for {VMM} could not be allocated entirely within one no

Sent: 05/15/2007
From: "Ben Armstrong [MSFT]" <(email address - cut out)>
Message:

You will see this message on NUMA systems
(http://en.wikipedia.org/wiki/Non-Uniform_Memory_Access). With a NUMA
system the computer is internally broken down into nodes, and each node
contains its own pool of processors and memory. On a NUMA system when a
processor tries to access memory in its own node - it is just like on a
standard system. But if a processor tries to access memory in another
node - there is a performance overhead involved. The performance overhead
is refered to as the "NUMA ratio" and varies from system to system. The
NUMA ratio can be anywhere from 1:1.1 (10% slower to access memory on
another node) to 1:6 (600% slower to access memory on another node).

This warning is provided for diagnostic issues - so that if you see slow
performance you can investigate if this is the cause. If you are not seeing
bad performance - then your system most likely has a low NUMA ratio and you
can ignore this warning.

FWIW - Since AMD processors now have the memory controller integrated into
the processor - any multi-proc AMD system is inherently NUMA, with each node
containing a single processor. Dual and quad proc AMD systems tend to have
very low NUMA ratios.

--
Cheers,
Benjamin Armstrong
============================
Windows Virtualization Program Manager
Blog: http://blogs.msdn.com/Virtual_PC_Guy
Book:
http://mumblingtomyself.spaces.live.com/blog/cns!64FFB030F5637A64!128.entry

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use.

"Humphrey" <(email address - cut out)> wrote in message
news:(email address - cut out)...

Show quoted text

>
>> I am running 10 Virtual Machines (XP SP2) on a HP ProLiant DL385 G1 (AMD
>> 2.4
>> with 12GB of RAM). I have got the last of the hardware bugs out but this
>> Event Log Warning has eluded me.
>>
>> "The memory for {Virtual machine ID} could not be allocated entirely
>> within
>> one node. The performance of this virtual machine may be degraded."
>>
>> The warning occurs after the server boots up. We have a script that
>> starts
>> a session and waits for the OS heartbeat, once it gets it, it moves to
>> the
>> next session in the array (rinse and repeat) until their all up and
>> running.
>>
>> Unfortunatly that last 3 get this message. I have 10+ servers configured
>> this way (between 7 and 10 sessions each) and each one has similar
>> behavior.
>> I am only allocating 1024MB of RAM to each session, and have thottled
>> them to
>> 50% CPU usage.
>>
>> I am outta idea, anyone seen something like this? I will take a
>> S.W.A.G.at
>> this point.
>
> similar messages here...
>
> has anyone found some solutions yet?
>
> Posted via http://www.VirtualServerFaq.com - Brought to you by Business
> Information Technology Shop - http://www.bitshop.com

Post Reply | This is Spam! | Mark as Spam

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