Solved

Service application running slowly on Server 2008 R2

Posted on 2010-11-22
6
1,544 Views
Last Modified: 2012-05-10
I have a Delphi web server application that receives XML documents via an HTTP post command.  The application does a Firebird database lookup and responds to the HTTP post.  In development and debugging, we compile and run this as a standalone windows application where we can see the input and output.  For production, we re-compile the same code as a windows service.

We are having performance issues with the service application on Windows Server 2008 R2.  It is running about 30 to 50% slower than the standalone application.  On Window Server 2000 and 2003 the performance was the same for the stand alone application and the service.

In troubleshooting the problem, we have recompiled the application to run as an ISAPI dll.  We put this dll under an Apache Web server.  We are seeing the same slow performance with the ISAPI dll.

I have used the Process Monitor (procmon.exe) from sysinternals.com and it appears that both the stand alone application and the service application are doing the same work, but the service is taking longer to do the database lookups.

Any ideas?
0
Comment
Question by:DavidCulbertson
  • 4
  • 2
6 Comments
 
LVL 37

Expert Comment

by:Geert Gruwez
ID: 34194876
do the apps work on the same database ?
if not, have you put in the same structure ? same indexes ?

is the virus scanner checked the accessed files ?
0
 

Author Comment

by:DavidCulbertson
ID: 34196434
The apps are running on the same server, same database, no anti-virus software.  The application is communicating with the database, which is on the same server, via TCP/IP.
0
 
LVL 37

Expert Comment

by:Geert Gruwez
ID: 34196810
windows 2K8 R2 and windows 2K3 are on the same server ???
0
The Eight Noble Truths of Backup and Recovery

How can IT departments tackle the challenges of a Big Data world? This white paper provides a roadmap to success and helps companies ensure that all their data is safe and secure, no matter if it resides on-premise with physical or virtual machines or in the cloud.

 

Author Comment

by:DavidCulbertson
ID: 34196848
No, the service application, and the stand alone application are on the same server.  The service application is slow and the stand alone is faster.

If I take the same database to a 2003 server, the service application and the stand alone application run at the same speed.
0
 

Accepted Solution

by:
DavidCulbertson earned 0 total points
ID: 34252973
We have upgraded to Delphi 2010 and converted the application to run as an ISAPI dll.  It now runs as fast as the stand alone executable.
0
 

Author Closing Comment

by:DavidCulbertson
ID: 34281162
It was a difficult project converting this to an ISAPI dll because we had to remove all references to global variables.  A side benefit is that Apache handles the multi threading for us, so our single threaded code can now accept multiple requests at the same time.
0

Featured Post

Does Powershell have you tied up in knots?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

OfficeMate Freezes on login or does not load after login credentials are input.
As technology users and professionals, we’re always learning. Our universal interest in advancing our knowledge of the trade is unmatched by most industries. It’s a curiosity that makes sense, given the climate of change. Within that, there lies a…
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question