The Introscope agent DNS lookup feature is related to getting host names where there are socket
connections to remote, or even the local system. By default, Introscope Agent has 2 DNS
lookup implementations - direct and separateThread, which is specified through the
introscope.agent.dns.lookup.type property in the IntroscopeAgent.profile.
To disable DNS lookup, please set the value of the introscope.agent.dns.lookup.type property to
disabled, in the IntroscopeAgent.profile.
You must restart the managed application before change to this property takes effect.
All supported releases.
Component : APM Agents
No It should not affect Agent monitoring nor loosing any metrics. It basically help to reduce Agent memory overhead and CPU consumption