Dell R710 Hyperthreading Enable but ESXi 5.5 not active

Hi, Joey,

Yes, I have enabled Logical processor in BIOS and I checked the VM doc, the advanced system setting in ESXi, VMkernel.Boot.hyperthreading and VMkernel.Boot.hyperthreadingMitigation are set to 'true'

 

 

Hi,

 

When you said you enable Hyper-Threading in BIOS, are you referring to Logical Processor set to Enable? 

 

Can I know if you have check in ESXi settings: https://dell.to/3c4Ce0m

 

Let me know if it helps.

Hi,

 

Since the BIOS option have been set to Enable, that would actually be the only configuration to be done on hardware level. 

 

Though, I went through some other 3rd party forum, and found a couple of these, hope they can help you:

 

https://dell.to/2E7vUsr, the user mentioned about "disabling the VMKernel.Boot.hyperthreadingMitigation advanced option made it possible to tick the box."

 

https://dell.to/3iF5NIw, the user mentioned it request for the host to be restarted, and some configuration that you might refer on.

Hi Joey,

I tried those setting on the system, and the same result, not active. Just wonder the latest version of BIOS for R710, is it 6.6?

Thanks,

Andy

 

Hello Andy,

 

Yes I can confirm BIOS 6.6 is the latest.

 

Can you verify in the BIOS, not just OMSA, that these settings are correct:

https://dell.to/2RAXph9

Check these:

64-bit “Yes” – This is set by default.

Virtualization Technology “Enabled” – This is disabled by default. You should change this.

Execute Disable “Enabled” – This is set by default.

 

 

 

Did you get our ESXi ISO that have our validated drivers included for your install?

 

R710 support page : https://dell.to/2EaMtUq

Filter Operating system to Vmware ESXi 5.5

Search Keyword  iso

 

VMware ESXi 5.5 Update 3 Urgent

VMware ESXi 5.5 Update 3

VMware ESXi 5.5 Image

VMware ESXi 5.5 Update 2

VMware ESXi 5.5 Update 1

 

Hi, Charles,

Those setting in Bios are enabled, and result seem the same after reboot the server.

for the server side, is it necessary to use Dell ISO to update ESXi server instead of the patch / bug fix from VMware?

Regards,

Andy

 

Hi,

 

It would be best that you could install Dell ESXi ISO, as it's customized with drivers to work with the existing hardware and also to minimize the root cause that causing your issue on HyperThreading option showing not enable. 

Hello Andy,

 

Yes you have the correct one.  That would be the recommended one since it is the latest update.

Hi, Joey,

Thank you, and i just thinking should I install the Dell ISO 5.5 U3 patch for my case? 

https://www.dell.com/support/home/en-ca/drivers/driversdetails?driverid=0d89w&oscode=xi55&productcode=poweredge-r710

Regards,
Andy

 

first link, last post helps me!

thanks

Hello,

please can you details more about how we can help you? Which link you are talking about?

Thanks

Hi,

That mitigation should be set to false value as it's restricting the hyperthreding. Found this article published by the Cisco and putting here if any future this happened.

https://www.cisco.com/c/en/us/support/docs/servers-unified-computing/vmware-esxi-cisco-ucs/222746-configure-cpu-hyperthreading-on-vcenter.html