WCF performance issue in Vista

Question

Hi there,

I am having performance issues with Vista when trying to connect with wsHttpBindings and NetNamedPipeBindings on Vista.

I'm having 4 WCF services where the first one connects to the second and the second one connect to two others.

The problem is when I run this setup on my Vista (64 bit) desktop the response times a really weird.

Laptop: WsHttpBinding < 150 ms NetNamedPipeBinding < 30 ms

Seems normal to me, but when I ran exact the same setup on the Vista computer the result where as following.

Desktop: WsHttpBinding < 50 ms NetNamedPipeBinding < 90ms

Which seems really weird because NetNamedPipeBinding should always be faster then http.

An other thing to note is that when I run the application in Debug mode it will use about 60% of the CPU (both cores) on the laptop and about 15% of the CPU (also both cores) on the Desktop. I have no idea why.

The code where I connect to the webservices:

//On the first webservices connection to SubCall
public SubCallServiceClient client = new SubCallServiceClient("NetNamedPipeBinding_ISubCallService");

//On the SubCall service connecting to Calls
private readonly CallsServiceClient callsClient = new CallsServiceClient("NetNamedPipeBinding_ICallsService");

//On The SubCall service connecting to Subscription    
private readonly SubscriptionServiceClient subscriptionClient = new SubscriptionServiceClient("NetNamedPipeBinding_ISubscriptionService");

Does anyone know what this could be?

Here are the specs of the two systems

Laptop

System Information

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.090804-1435) System Manufacturer: Dell Inc. System Model: MP061
BIOS: Phoenix ROM BIOS PLUS Version 1.10 A02 Processor: Genuine Intel(R) CPU T2300 @ 1.66GHz (2 CPUs) Memory: 2046MB RAM Page File: 705MB used, 2723MB available DirectX Version: DirectX 9.0c (4.09.0000.0904) DxDiag Version: 5.03.2600.5512 32bit Unicode

.NET 3.5 Visual Studio 2008 Professional Edition

Dekstop PC:

---

System Information

Operating System: Windows Vista™ Business (6.0, Build 6001) Service Pack 1 (6001.vistasp1_ldr.090805-0102) System Model: OptiPlex 760 BIOS: Phoenix ROM BIOS PLUS Version 1.10 A03 Processor: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz (2 CPUs), ~3.0GHz Memory: 3930MB RAM Page File: 1701MB used, 6337MB available DirectX Version: DirectX 10 DxDiag Version: 6.00.6001.18000 32bit Unicode

.NET 3.5 Visual Studio 2008 Professional Edition

Answer 1

There appears to be an inconsistency in your question.

Is your laptop running Windows XP?

If yes: Windows XP does not have IIS 7 and WAS (Web Activation Serices)

IIS7/WAS is required to run WCF NetNamedPipeBinding.

Therefore, I think that the difference in the performance numbers is that: somewhere you are running a different binding than you think you are running.