Service statistic alert when the value is higher then the service statistic period time

Hi Guys,
I’m trying to find a way to get an alert on service performance statistics once the statistics are higher than the regular value in a period of time(8 days for example)- pls alert me.

for example, NFS iO stat service > read OS for example> 8 days> if the value is higher than it was within 8 days- pls alert me.

do I need to do it via an active check rule? maybe from reports?
Did anyone have this request before and know how can I do it?

Some service checks have predictive levels implemented for their parameters.

If the check you need to use does not offer it you could ask the checkmk developers to add it as a feature request.