• Dynatrace Portal
  • Synthetic Monitoring Mobile
  • Synthetic Monitoring Backbone
  • Synthetic Monitoring Last Mile
  • Synthetic Monitoring Private Last Mile





The First Byte Time is the time that elapses between these two actions:

  • HTTP request from the agent is received by the destination server that will provide the page's content.
  • The first packet for the content is received.
Root Cause

A high First Byte Time could be caused by a number of issues with the application's network, including:

  • Overloaded web servers
  • The load balancing scheme
  • Database connection issues