Could you please help us on the below requirement?
Customer is interested in 15 days trend report on what all services(web services/web requests) are slow. We need a report on area which needs improvements, what all services behaving poorly and how much end user facing slowness and because of what.
You can create a dashboard with two dashlets using Webrequests and Webservices. Then sort both of on Total Avg time and run a report.
You can also rgt click on your dashlet and select 'Edit filter' on 'Top X' to capture top slow webrequests and webservices happening in any timeframe.