Step-by-step:
Select Ratio Mode
In the Alert mode section, choose the new “Ratio mode %” card.
Add a target metric
In this mode, you can select a first metric to monitor by clicking on the Add metric button (e.g., slow pages).
Add a reference metric
Click Add metric again to define your baseline (e.g., indexable pages).
Preview the ratio over time
You can adjust the time period drop down to visualize your ratio based on the crawls monitoring window.
Set your threshold
By previewing the ratio charts, you can conclude that around 30% of indexable pages get a Slow or Too slow load time and decide to be alerted if a spike happens.
Below is an example of that what the chart looks like if you want to be alerted if that proportion exceeds 30%.
Create the alert
Next, create the alert by clicking on the Create button in the top right corner.
