processing time high in window service

Question

hi,

 

i am using window server in c#.net  in which i am sending sme data to client via http request it takes 5-6 minutes to process 2000 numbers. is there some way to decrease this processing time as i have to send 1,00,000 to 2,00,000 request to client via http.please suggest some alternative way to decrease processing time. currently i am using datareader to process the number.