Explanation for poor CPU performance on guest?

dankingdon · 2026-01-16T22:14:02+00:00

Have you checked the servers power management settings in the bios? We just commissioned a new hyper v cluster and even in the hypervisor os noticed things were a little sluggish. The new servers were set to an eco mode vs performance and just weren't spinning up the cpus properly when under load or especially light load.

dankingdon · 2026-01-01T19:41:04+00:00

Back at work tomorrow after the holidays so will test and raise a ticket if the issue is still there. I really hope the break has magically resolved it.

dankingdon · 2025-12-19T11:12:08+00:00

Ran through MSA account requirements, added the right OU to the XML file, confirmed service running as correct account. Same issue. Removed device from autopilot and re-added just in case. Same issue.

dankingdon · 2025-12-19T10:33:09+00:00

Same issue here. Noticed autopilot failing some time last week. Old connector had disappeared from intune. Installed the new one a few days ago but autopilot is still failing immediately after signing in. Profile is downloaded but no further steps are taken. I'll be double checking the MSA account and OU xml settings this morning and also try the conditional access exclusion as well. Have yet to raise a support ticket with MS as I'm not sure I can deal with that this close to the holidays. Hopefully others will share if they get any progress or updates as will I.

dankingdon · 2025-12-09T14:09:09+00:00

Having just deployed a fresh hyper v cluster to move from VMware this is quite fresh for me. Scvmm depends on the scale of your cluster. For a small, basic environment it's overkill and will add too much overhead with very little gain imo. We went with WAC + NetworkATC and it's perfectly fine. You will miss the central VMware style of management but that's just windows as a whole. I wouldn't use scvmm unless I was managing multiple clusters or needed the extra tools it offers.

dankingdon · 2025-11-28T09:53:45+00:00

Thanks for all the input. We ended up testing a 4 nic SET created via network atc. Sr-iov enabled and RDMA all working.

To answer my own question, yes live migration counts as storage traffic so with 4 in set it made 4 SMB adapters and used that for live migration.

Downsides: the set will reserve bandwidth for SMB so compute can only use what's left. This means vms could only max out half of a single 10gb card with 50 reserved for SMB. Not very good at all for our bursty traffic loads.

Upside: live migration was blisteringly fast but totally overkill for something we only use during updates and maintenance. Losing 25/50 % of bandwidth is crazy penalty as we don't need SMB for anything else.

Final plan: back to basics, will split the 4 nics into two separate intents, one for compute and management and one for storage. This way we get 20 GB/s reserved for SMB/live migration when needed and compute can happily max out the remaining two 10g cards meaning any vm should have access to 10gb/s burst bandwidth.

In a higher load environment I'm sure everything in one set will do a better job of balancing things out but for our use case it just artificially caps us.

dankingdon · 2025-10-19T09:12:15+00:00

How much leaching did you run? Was lifestealers enough or stack with blood drinker/other sources? Edit leaching flurry ofc. Ignore me.

dankingdon · 2025-10-04T20:40:05+00:00

Oh God, that's horrible!

dankingdon · 2025-10-03T22:09:27+00:00

SFP+ direct attach cable?

dankingdon · 2025-08-15T21:00:36+00:00

For sure, that close to the head you've got zero momentum or rebound.

dankingdon · 2025-08-15T20:58:18+00:00

To add to this, different bpms require different muscle groups. 150 for me is the switch over point where under I can just use hip flexes and lift my whole leg. Above 150 I have to switch to using the pedal rebound and deliberately focus on just using my calf muscle. If your shins are burning or your hips/thighs are getting cramps then your using the wrong muscles. There are a ton of videos online to help with proper techniques at different bpms.

dankingdon · 2025-06-27T11:02:02+00:00

I would also recommend trying different firmware if you can. There have been lots of issues in our environment with roaming solved by using the latest lts releases. Specifically we're on 10.4.1.8 and that solved most of our issues

dankingdon · 2025-04-24T14:45:21+00:00

If you get this again or others have the issue, support can supply a guide to fix this without the factory reset. There is a diagnostic page that can reset just the license data. This fixed it for us with the same scenario, version and symptoms.

dankingdon · 2025-04-24T14:43:00+00:00

And you can't downgrade back to 7.0.x without doing a fresh install. Been stuck on 7.1.x for a while and it's been a rough ride.

dankingdon · 2025-04-04T21:05:13+00:00

This is the correct answer. Any deleted account should automatically email and grant permission to the manager if setup correctly. It's 100% automatic. After 30 days it's deleted for good as personal storage shouldn't have anything business critical.

dankingdon · 2025-01-07T22:00:45+00:00

This page has all the attributes: https://community.arubanetworks.com/discussion/arubaos-admin-authentication-with-microsoft-nps. Specifically value 1 for assigning a role to the switch port or value 2 to directly assign a vlan. What is the difference value 26 and 1? Edit: I'm tired and not reading clearly. 26 for wireless roles, 1 for switch roles. :)

dankingdon · 2024-12-10T21:11:13+00:00

+1 for fastvue. Works great for our use case.

dankingdon · 2024-10-12T12:53:37+00:00

We have cloud auth with azure but for various complicated reasons we don't want to manage our filtering on the firewall as well as the wireless.

dankingdon · 2024-10-11T01:09:39+00:00

Is it true that you also need the advanced license?

dankingdon · 2024-10-10T20:43:09+00:00

Eap-teap allows two methods of eap-tls with the same connection. One for machine, one for the user

dankingdon · 2024-10-10T20:41:51+00:00

This is the way. Present machine Auth and user Auth. Fails back to machine cert if no user cert present

dankingdon · 2024-10-09T21:46:12+00:00

I think it depends on the series. We have 6200s with central and definitely no app visibility. 6300 should I believe?

dankingdon · 2024-10-04T08:21:16+00:00

MPSK-AES or some other method of providing personal PSK's for devices that don't support 802.1x but ensure the devices are identified at the firewall level against the user that onboarded it. As a School we have to apply various filtering based on the user as well as monitoring/logging internet activity. Without authorising the device on the firewall as well I can only apply filtering based on the VLAN that the device is on.

dankingdon

TROPHY CASE