Webmonitor agent collects data in a synchronous mode when more than one URL is integrated to collect data on one agent.
To explain this further:
The Web Monitor Agent collects data when integrated to collect URL data and sends it to the Management Server. The agents keeps track of
resource utilization metrics and alerts when certain pre-defined thresholds are reached.
Webmonitor agent used shared properties for all the URLs integrated on specific agent. These properties are called as "Data Collection Scheduler" properties under the agent properties.
All the URLs when scheduled to collect data according to the interval such as sec, min, hour, etc, the data is then collected in a timely fashion.
For example, Agent-one is integrated to collected data for URL1 and URL2. This is made to collect data at 1 min polling interval. If it does first collection at 11:00AM, then second collection will be made for Agent-one (both URLs) at 11:01AM, then 11:02AM, so on.