Hyper V Slow File Opening

Hi all we have a Hyper V Environment On a Dell Power Edge Server

have noticed that file transfer opening Office Files and PDFs etc are painfully slow

we have read and disabled VMQ on the host Adapter but this has made no difference,

can anybody help with this issue

The server (Host) has 64 GB of Ram and is Hosting 3  VM Machines all running Server 2012 R2

John
pepps11976Asked:
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
When you say that you have disabled VMQ on the adapter was that done for every Broadcom port being used by a Hyper-V vSwitch?

How is the disk subsystem set up?

Fixed or Dynamic VHDX Files on a shared partition or individual partitions?

Are the C states disabled in the BIOS?

Please see my E-E article here: Some Hyper-V Hardware and Software Best Practices.
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pepps11976Author Commented:
I have Disabled VMQ on the Physical Adapter in Network Card Properties - Configure - Advanced and then Disabled Virtual Machine Queues.

I have also Un ticked Enable Virtual Machine Queue in the Properties of the Virtual Machine under Network Adapter - Hardware Acceleration.

I have 6 Disks on the Host the OS is two Disks Mirrored, and the other 4 Disks are Raid 10
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pepps11976Author Commented:
I have also noticed that when I restart the file server everything is speedy then about 2 mins after restart it goes back to being slow again
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
What is the RAID setup? Hardware RAID or software RAID?

Drive type? SAS, SATA, 10K or other?
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Svet PaperovIT ManagerCommented:
Did you try changing the port on the physical switch where the host adapter is connected to?

Do you have teaming or it's a single adapter?

If you have another virtual machine connected to the same virtual switch: how about running some tests from there - is it slow as well?
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pepps11976Author Commented:
This issue was caused by Anti Virus Software
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Where was the A/V installed to be causing the problem?
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pepps11976Author Commented:
On the File Server itself
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Okay. Thanks for answering.

As a rule we put A/V on endpoints only. We do not install A/V clients on servers or virtualization hosts. That turns into a bear to manage for exclusions, but also drags down the servers themselves.

Folks should not be browsing or running e-mail from a server, all risky behaviours, anyway. It's the endpoints that work with the data so they are where we put the A/V client.
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pepps11976Author Commented:
Found the answer Myself
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