I use Zabbix to monitor a high performance computing environment. The environment is comprised of clusters of many hosts that perform similar functions in parallel. For this reason, there are certain metrics that we monitor that are aggregated on the cluster-level instead of on a per host basis. In Zabbix we use a synthetic host to denote these cluster-aggregated metrics. For some of our clusters we have some synthetic hosts that have 20,000 or more unique items. Some hosts have 50,000 items. In these cases when you click the Select button in the graph widget and filter for one of these hosts the browser times out or becomes unusable.

We need to introduce pagination in some form. I personally think this would be a good time to introduce pagination through scrolling (or infinite scrolling pagination). But any kind of pagination is fine as this will limit the amount of data returned to the user, and prevent browser crashing.