Can you run various NUMA parameters on ESX host?

Hi all

We are running ESX 3.0 and have experienced a problem with some our fair virtual servers randomly close I googled the error message displayed in the case where newspapers that lead me to the article below in the VMware KB.

http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 10213

This article is about the exact message we receive, so I am confident that its troubleshooting procedures should work as we run the NUMA architecture in our environment, but I have a question before the change of management being curious to know a bit more information regarding hit her on the effects of his settings of NUMA in our environment.

That's why we have taken two ESX hosts in our environment, my question was the following can I make NUMA changes on an ESX host and then migrate (if they aren't already) servers that have had the shutdown problem random overall to the ESX host that has the correct settings of NUMA as detailed in the article above?

If any of you out there have done this before? If so is there any bad shot on the effects that I should know about? Any comments or advice you can give me on this would be greatly appreciated! Roll on the migration to VSphere 4.0!

Thank you

Nick

Hi Nick,

That's why we have taken two ESX hosts in our environment, my question was the following can I make NUMA changes on an ESX host and then migrate (if they aren't already) servers that have had the shutdown problem random overall to the ESX host that has the correct settings of NUMA as detailed in the article above?

No Yes No problem with that. The VM themselves are not aware that they are running on NUMA hardware, so will not notice. The bug is because the vmkernel does not release memory properly when a virtual machine gets on demand on one NUMA node other than that which has been started the. Configuration Numa.MonMigEnable effectively disables this behavior at the host level, but this does not disable the advantage of NUMA so you may notice a performance decrease.

Not sure of your patch levels, but apparently it was 'fixed' with this patch: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2066306

Kind regards.

Tags: VMware

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