Slow RDP performance
on Windows 2008 R2 and 2012 R2 servers running on VMware and Proxmox
We were running
several Windows 2012 R2 servers on a VMware ESX environment. And
still, we experience a sluggish performance on the Windows 2012R2
server when connection them with any RDP-client. We tried different
connections (wifi, 4G, LAN, etc.) and different clients (Windows 10
RDP, RoyalTS, Mac-RDP, etc.). The hardware could’t be a factor in
the issue. So we searched to some finetune-settings in GPO and
registry.
The hardware wasn’t
an issue.
the servers did’t
have a high overall load
there was no high
CPU load
there was enough RAM
we used 15k HP SAS
enterprise disks
there was no high IO
we had Teamed the
NICs in VMware
This is what we did
to solve the issue and get very fast RDP-performance.
Finetune “Remote
Desktop Services” in Group Policy
Just wanted to post this for anyone else experiencing this issue. Seems the issue does not effect Windows Server 2012 R2, and turns out it might be related to the UDP packets getting fragmenting when creating a RDP session. Here’s the fix:
open prompt DOS: gpedit.msc
Computer Config > Windows Settings > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop
Session Host > Connections > Select RDP transport
protocol = Use only TCP
You can also set this on the client side by specifying:
Computer Config > Windows Settings > Admin Templates > Windows Components
> Remote Desktop Services > Remote Desktop Connection
Client > Turn off UDP on Client = Enabled
Disabling TCP
Offloading in Windows Server 2012
We also add below
registry setting to improve performance. A little explanation of TCP
Offloading:
“TCP offload
engine is a function used in network interface cards (NIC) to offload
processing of the entire TCP/IP stack to the network controller. By
moving some or all of the processing to dedicated hardware, a TCP
offload engine frees the system’s main CPU for other tasks.
However, TCP offloading has been known to cause some issues, and
disabling it can help avoid these issues.”
---------- 2º second option -----------
This is what you
must do in the Registry (regedit)
1. Open RegEdit on
the Windows Server machine.
2. Navigate to this
registry key in the tree on the left:
3.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
4. Right-click on
the right side, and add a new DWORD (32-bit) Value
5. Set the value
name to DisableTaskOffload and the value data to 1
6. Reconnect to the
Server via RDP (to a new session) and your performance should be
normal.
Autor:
http://www.vdberge.com/kennisbank/slow-rdp-performance-on-windows-2012-r2-servers-running-on-vmware/
*-------------------------------------------------------------------------------------------------*
On the Windows
Server 2012 machine, disable the Large Send Offload via the following
steps:
a. Open Network
Connections.
b. Right-click the
icon of the NIC which is responsible for the connection to terminal
clients and select Properties.
c. In Networking
tab, click Configure… button.
d. In the next
window, switch to Advanced tab.
e. Click the Large
Send Offload Version 2 (IPv4) and change the value to Disabled.
Postagens
Nenhum comentário:
Postar um comentário