Web Service requests are being queued...why?

Larry D

I have a web service that contains a WebMethod that takes a request object as
a param and returns a response object. I have a test method for NUnit that
spools n threads and each thread fires the web method. My results are
showing me that even though the threads are being created at the same time,
the web method call is taken incrementally longer for each thread in it's
terminating order. This also happens when I do true multi-user / multi
session testing (tried 7 clients 2 sessions each). I have tried different
dev machines and different web servers. I also ran methods from other web
services I have written. They appear to be queuing. Is there something in
the web.config, IIS or web method attributes that I do not know about to
allow true multi-session concurrency with web methods?

I show the output of the test below. Notice that all the threads were
created at the same time, but ended non-deterministically at different times.
Also, notice that the ending time and the timespan for the actual web method
call are correlated.

Any insight you can provide would be greatly appreciated.

Output
xusababyxil, Thread 2, span: 1.171875, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:35:57 PM
xusababyxil, Thread 1, span: 1.25, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:35:57 PM
xusababyxil, Thread 4, span: 2.140625, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:35:58 PM
xusababyxil, Thread 3, span: 2.203125, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:35:58 PM
xusababyxil, Thread 6, span: 3, Start: 7/21/2005 3:35:56 PM, End: 7/21/2005
3:35:59 PM
xusababyxil, Thread 5, span: 3.203125, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:35:59 PM
xusababyxil, Thread 7, span: 4.109375, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:36:00 PM
xusababyxil, Thread 9, span: 5.5625, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:36:01 PM
xusababyxil, Thread 8, span: 9.09375, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:36:05 PM
xusababyxil, Thread 0, span: 11.046875, Start: 7/21/2005 3:35:56 PM, End:
7/21/2005 3:36:07 PM

--
Thanks,
Larry

Jul 26 '05 #1

Subscribe Post Reply

885

by: Fritz Bosch | last post by:

We are in the process of refactoring our GUI-based test application for radio equipment and are rewriting a significant part in Python. The new architecture will substantially be based on the...

Python

Confused about ASP, "sessions", and queuing of multiple requests

by: Ohaya | last post by:

Hi, I'm trying to understand a situation where ASP seems to be "blocking" of "queuing" requests. This is on a Win2K Advanced Server, with IIS5. I've seen some posts (e.g.,...

ASP / Active Server Pages

Sending compressed Web Service requests to Apache server

by: PerryG | last post by:

We have a .NET 1.1 client which is sending a gzipped soap request using HttpWebRequest to an Apache server. The Apache server is using a the 'mod_deflate' server to decompress the incoming...

.NET Framework

Concurrent Requests from Same Session

by: PJ | last post by:

I posted a few days ago concerning requests being blocked from a main window after a popup window had initiated a file download. Apparently this has to do with the fact that asp.net or iis...

ASP.NET

Prevent calling Web Service from being blocked

by: Joe | last post by:

Is there anyway to register an application with the various systems (like Windows firewall) to prevent the user from having to click the 'Allow action' or similar that pops up from applications...