Excessive slowness in Windows Server response

Dear Experts.

We are currently encountering a very weird situation we need your support to identify the reason.

We have a live 3-Tier Mobile Banking system where a Mobile Apps client accesses the Bank back-end system through our Middleware system which is written in C#.

The problem is, when our Middleware system is in the "production environment" (secured zone, etc) some responses/queries takes very long time (around 30 seconds), while the same middleware in the test environment connected to the live DB takes 1-3 seconds !! Both queries return the same correct data at the end but test env returns it in 2 seconds while the production takes 10 times more !!
Any ideas ?? Note that we have limited access to the customer deployment structure, DB, etc.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Is that behaviour repeatable? I.e. same queries always are slow, while others are not?
myh123Author Commented:
Yes it is. Some services only are contiuously slow, but we noticed it's slow only when the response is Empty or Null
myh123Author Commented:
So when the response is not NULL both env returns the response quickly. But when it's NULL the live is toooo slow !!

Note that Live env has load balancer with distributed loading on 8 servers
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Maybe the load balancing leads to asking all 8 servers if there is no result?

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
myh123Author Commented:
Would it take 20-30 seconds ?!
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
It would last 8 times the time for a single query, so that is in the observed time range.
Seth SimmonsSr. Systems AdministratorCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Server 2003

From novice to tech pro — start learning today.