BIOS Setting: Node Interleaving Yes or No

[progressmaschin]

Hi!

i have a HP ProLiant BL495c G5 with Opteron 2384 (8x2.7 GHz) and 24GB RAM. VMware is vSphere.

What do you suggest to configure in the ProLiant's BIOS under the point "Enable Node Interleaving"? Enable or Disable?

I have red just several articles here in the Community, but nobody had given a exact Yes or No in his answer... Is there anybody out there, who can give a good advice for my situation?

Thanks

[vmroyale]

Hello.

What do you suggest to configure in the ProLiant's BIOS under the point "Enable Node Interleaving"? Enable or Disable?

The "[Performance Best Practices for VMware vSphere 4.0|http://www.vmware.com/pdf/Perf_Best_Practices_vSphere4.0.pdf]" document states that "In most cases you will get the best performance by disabling node interleaving." Also make sure to review the NUMA section of this document on p. 21.

Good Luck!

[f10]

The following should help you decide:

By default, ESX NUMA scheduling and related optimizations are enabled only on systems with a total of

at least four CPU cores and with at least two CPU core per NUMA node. On such systems, virtual

machines can be separated into the following categories:

„ Virtual machines with a number of vCPUs equal to or less than the number of cores in each NUMA

node will be managed by the NUMA scheduler and will have the best performance.

„ Virtual machines with more vCPUs than the number of cores in a NUMA node will not be managed

by the NUMA scheduler. They will still run correctly, but they will not benefit from the ESX NUMA

optimizations.

For detailed info see

If you found this or other information useful, please consider awarding points for "Correct" or "Helpful".

f10

VCP3,VCP4,HP UX CSA

[DrJohnEaton]

Pay attention to the 3rd para - it's the key.

[progressmaschin]

Hello DrJohnEaton,

what do you mean exactly with the 3rd para?

Thanks

[frapposelli]

What do you suggest to configure in the ProLiant's BIOS under the point "Enable Node Interleaving"? Enable or Disable?

In my opinion this should be set to Disable, I did a short blog post in the past on this matter, you can check it here: vSphere and NUMA BIOS settings

Hope this helps.

Ciao,

Fabio

-

---

If you found this note/reply useful, please consider awarding points for "Correct" or "Helpful"

Check out my blog: P2V It!

[progressmaschin]

I disabled Node Interleaving