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WCF server startup slow on W2K3 in VM
Just a quick and unrelated tip: If you - like I'm doing it right now - run a WCF server in a Virtual Machine running W2K3 Server and your VM is supposed to be standalone and not part of domain you might experience a delay when a WCF server application is starting. When looking at the issue with Wireshark/Ethereal (yes, I do what I preach and a Network Sniffer really is one of the first things I use when I experience some kind of unexpected delay ;-)) I noticed that the machine is broadcasting eight Netbios name service queries on its internal subnet to find a domain controller. These queries time out after about eight seconds, but I really didn't want to wait that long.

I'm sure that there are dozens of ways around it, but I simply converted my standalone W2K3 VM to a standalone Domain Controller. Startup time decreased from 8 seconds to less than one second for each time I hit F5 in Visual Studio.
posted on Monday, September 04, 2006 9:20 PM

# re: WCF server startup slow on W2K3 in VM @ Tuesday, September 05, 2006 12:43 AM

Thanks for the tip, Ingo!

Quite funky. I wonder why they do that if they can always tell first with a simple API if the machine is part of a domain or not, and be far more efficient about it.
Tomas Restrepo

# re: WCF server startup slow on W2K3 in VM @ Friday, October 06, 2006 3:16 PM

Thanks
HI,

I also noticed this delay. It's also related to the number of IP Addresses on the machine.
I've got 4 (see below), and i get a 18-19 second delay!!! Yuk!

I was hoping for a more elegant solution! There's got to be some way to reduce this. See how it goes...

C:\Data\temp>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Baby
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : SME

Ethernet adapter VMware Network Adapter VMnet8:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for
VMnet8
Physical Address. . . . . . . . . : 00-50-56-C0-00-08
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.47.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :

Ethernet adapter VMware Network Adapter VMnet1:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for
VMnet1
Physical Address. . . . . . . . . : 00-50-56-C0-00-01
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.19.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : SME
Description . . . . . . . . . . . : Marvell Yukon 88E8053 PCI-E Gigabit
Ethernet Controller
Physical Address. . . . . . . . . : 00-0F-B0-5B-44-59
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.101
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
Lease Obtained. . . . . . . . . . : Friday, 6 October 2006 9:34:45 PM
Lease Expires . . . . . . . . . . : Saturday, 7 October 2006 9:34:45 PM

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/Wireless 2915ABG Networ
k Connection
Physical Address. . . . . . . . . : 00-0E-35-EB-1A-15
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IP Address. . . : 169.254.142.150
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.1.1
192.168.0.1


minas@optusnet.com.au
Minas Casiou


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