Server Products
Data Center Products including boards, integrated systems, Intel® Xeon® Processors, RAID Storage; and Intel® Xeon® Processors
Announcements
Welcome to the Intel Community. If you get an answer you like, please mark it as an Accepted Solution to help others. Thank you!
4296 Discussions

Intel Serverboard S5520HCT and Windows Hyper-V 2008 R2 NIC SLOOOOW

idata
Community Manager
1,327 Views

Hi All,

Having an issue with this board and the onboard NIC's - 82576.

Fresh install of OS we see data transfer of ~100M

Add roll Hyper-V (do not select to create a virtual switch)

reboot

Do a transfer again and network speed drops to ~5M

Remove Roll Hyper-V

Reboot

Speed back to normal

Thing tried when Hyper-V roll added;

Disbale selective/all offloading

Disbale flow control

disbale chimney in netsh and or RSS

Play with buffers settings

We have 3 new servers all with the same issue any ideas please?

Thanks

Michael.

0 Kudos
4 Replies
idata
Community Manager
87 Views

Have you tried setting your NIC's to 1GB Full Auto?

idata
Community Manager
87 Views

Hi Patrick,

Yes the NIC's are setup for Gg Full duplex- using auto neg on both cards (all 6 ports) and Brocade Fastiron Super X switch.

I have also disabled in Windows all NIC's before adding Hyper-V and then rebooting and reenabled 1 NIC - same result.

We do have Four other Win2008 R2 servers running Hyper-V fine - these are an older gen Intel Server

These older gen boards are - BIOS Version/Date Intel Corporation S5000.86B.12.00.0098.062320091136, 23/06/2009

DSilv11
Valued Contributor III
87 Views

A number of folks have reported Hyper-V issues related to this generation product.

A fix is expected very shortly. (BIOS update. Version number not available till it completes testing)

One work-around seems to be to run 32G or less of ram.

idata
Community Manager
87 Views

Hello Doc_SilverCreek,

I have taken our 16GB of RAM - this leaves 32GB in the system. By doing this it appears to have doubled the network throughput.

This is still under half of the throughput when Hyper-V has been removed though.

As we are a Intel Premier Channel Partner we will also continue to push our contacts at Intel to see if this is what is happerning with this board.

We also have a case open with Microsoft - so I will post the finds to this issue when we get to the bottom of it.

Thanks for your help here.

Reply