is ESX NUMA aware?

[vmmax2479]

is ESX NUMA aware?

any benefit having NUMA hosts, IBM for example?

[azn2kew · Accepted solution]

here is NUMA details

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Regards,

Stefan Nguyen

iGeek Systems Inc.

VMware, Citrix, Microsoft Consultant

[kooltechies]

Hi,

Yes ESX is NUMA aware you can check the NUMA nodes entry in /proc/vmware/sched/NUMA folder.

Thanks,

Samir

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[oreeh]

Yes, ESX is NUMA aware.

There are pros and cons to NUMA and that tends to be "religious" so ...

[gary1012]

Here's a recent discussion about the IBM NUMA servers.

[Rubeck]

Hi ..

I'll answer the first Q:

ESX is NUMA aware, yes..

From http://www.vmware.com/pdf/vi_performance_tuning.pdf

"The intelligent, adaptive NUMA scheduling and memory placement policies in

VMware ESX Server 3 can manage all virtual machines transparently, so that

administrators do not need to deal with the complexity of balancing virtual

machines between nodes by hand. However, manual override controls are also

available and advanced administrators may prefer to control the memory

placement (through the Memory Affinity option) and processor utilization

(through the Only Use Processors option) by hand."

/Rubeck