Thanks for your quick response. Both the servers have same same version of framework(2.0), OS,service packs installed. Both READ and WRITE operation is done on local disks on both the servers. Production server will be busy between 2 and 5 pm and this application is being executed in the morning. I don't see any other services, processes that do I/O operations or are memory/CPU expensive.
I checked with Infrastructure team and they said that...

Hello,
I am having a performance issue with one of my C#.NET console application. The application is faster(takes 10 mins) when it runs from our test environment, but slower on Production environment(tak es 80 mins). The settings/Configurations are same between the two environments.Th e application reads a text file, which has 180K records, and splits it up into multiple text file based on a condition. I am attaching the code with this....