When CPU Utilisation riches 70% to 80 % at that time when user call web service method for e.g like time 12.01.00 but it riches to database server after one minute like 12.02.00 and database server gives response in fraction of milliseconds for that request and we receive this error System.Web.HttpException (0x80004005): Request timed out in elmah .There is a time difference between receiving request at web service method and sending it to database. When CPU normal then everything works smoothly within fraction of seconds.I don't understand why this one min time difference occurring between received request at .net side and sending it to database. After reset iis every thing work normal .This happens only production server but not in development and UAT Server.
IIS version:-8.5 and sql 2012